INVENTORY OF DAIRY R & D IN SA IN THE PERIOD 2015 – 2017

PROJECTS, CAPACITIES AND PUBLICATIONS BY PROGRAMME LEADER AT INSTITUTION.

Banga, Cuthbert and others - ARC-Irene.

Projects:

Genetic parameter estimates for milkability traits in South African Holstein cattle - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Venda.

Genetic parameter estimates among milk production traits for the first three lactations in South African Guernsey cattle - Agricultural Research Council-Animal Production Institute, in collaboration with the Tshwane University of Technology.
Heterogeneity of variance for milk production traits between high and low input dairy production systems in South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Limpopo.

Evaluation of alternative simulation models for smallholder dairy cattle production systems in South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Pretoria.

Genetic analysis of stillbirth in South African Holstein cattle- Agricultural Research Council-Animal Production Institute, in collaboration with the University of Limpopo.
Evaluation of cow and herd performance for the smallholder and emerging dairy production systems in South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Limpopo.
An analysis of the population structure of smallholder dairy cattle herds in South Africa using SNP markers - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Limpopo.
Sustainability of emerging dairy farmers: A case study of emerging dairy farmers in the North-Eastern Free State Province of South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Free State.
Association between animal husbandry practices and the hygienic quality of raw milk: the case of smallholder dairy farmers in the Eastern Cape Province of South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Fort Hare.
Development and implementation of a ruminant-cheese model for rural areas of South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the Stellenbosch University.
Application of SNP markers for parentage identification on smallholder dairy herds in South Africa- Agricultural Research Council-Animal Production Institute, in collaboration with the University of Limpopo.
Development of a breeding programme for the low input dairy production system in South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Fort Hare.
Application of genomic technologies to enable accelerated genetic improvement in smallholder dairy herds - Agricultural Research Council-Animal Production Institute, in collaboration with the University of KwaZulu-Natal.
Evaluation of the microbial aspect of rural small-scale farmers’ raw milk handling practices from production to utilization - Agricultural Research Council-Animal Production Institute, in collaboration with the University of KwaZulu-Natal.
Genetic evaluation of functional traits in South African dairy cattle - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Pretoria.
Random regression models for the estimation of breeding values of dairy production traits cattle - Agricultural Research Council-Animal Production Institute, in collaboration with the University of Venda.

Ingrid Tsoeu:

Microbial & physiochemical evaluation of artisan cheese produced in a rural environment of South Africa - Agricultural Research Council-Animal Production Institute, in collaboration with Stellenbosch University.

Scientific Publications:

Imbayarwo-Chikosi,VE, Ducrocq,V., Banga, C.B., Halimani,T.E., Van Wyk,J.B., Maiwashe, A. & Dzama, K. 2016. Impact of conformation traits on functional longevity in South African Holstein cattle. Animal Production Science. http://dx.doi.org/10.1071/AN16387.

Imbayarwo-Chikosi, V.E., Ducrocq, V., Banga, C.B., Halimani, T.E., van Wyk, J.B., Maiwashe, A. & Dzama, K. Estimation of genetic parameters for functional longevity in the South African Holstein cattle using a piecewise Weibull proportional hazards model. Journal of Animal Breed Genetics :1–9
Tanyanyiwa, F. K., Kolanisi, U., Chimonyo, M. & Banga, C.B. Identification of entrepreneurial characteristics of emerging smallholder dairy farmers: A case study of Groblersdal and Matatiele local municipalities, South Africa. Journal of Human Ecology: 57 (3).

Conference Presentations:

CB Banga, An optimal approach to minimising prediction error variance in selection objectives, 49th SASAS Congress, Spier Hotel and Conference Centre, Stellenbosch, South Africa, 3-6 July 2016.
O Abejide, M Chagunda, R Mrode, G Banos, J Ojango, C Banga, G Simm. Joint genetic analysis of Jersey dairy cows performing in two countries in Sub Saharan Africa. Proceedings of the British Society of Animal Science Annual Conference, Animal Science for a Sustainable Future, held in Chester, UK, 6-7 April 2016.
Muntswu, A.E. Breeding and management practices on smal holder and emerging dairy herds in South Africa. 49thSASAS Congress, Spier Hotel and Conference Centre, Stellenbosch, South Africa, 3-6 July 2016.
Z Gobane, CB Banga & V Muchenje. Application of genomics technology for smallholder dairy cattle breeding in South Africa: challenges and opportunities. SA Large Herds Conference, Champagne Sports Resort, Drakensberg, KwaZulu-Natal, 5-7 June 2017.
Banga, CB. 2016. Development of genetic improvement programmes for smallholder dairy herds in Southern Africa through the application of genomic technologies. International Atomic Energy Agency Research Coordination Conference, Vienna International Centre, Vienna, Austria, 3-7 October 2016.

Dugmore, Trevor and others – KZN Dept. of Agriculture and Rural Development.

Projects:

Accelerated calf rearing: To determine the effect of accelerated calf rearing on dairy calf and heifer growth, as well as first lactation milk production.
Evaluation of bio-active forages for livestock health and production
Mitigation of climate change on livestock production
Evaluation of the effect of round-up, soil temperature and soil moisture on the establishment of ryegrass oversown into kikuyu
Evaluation of Festuca arundinacea (Tall Fescue) varieties, relative to other temperate species for herbage quality and grazing management to determine suitability as a lower input pasture for dairy systems.
Evaluation of medium and long duration forage cereal varieties to be grown in a mixture with forage legumes
Elite pasture cultivar evaluation trials
Manure as alternative fertilizer for pastures
The genetic improvement and development of suitable germplasm for future pasture production in KZN
Evaluation of kikuyu cultivars for chemical composition, yield and adaptability to cold environments
The effect of soil temperature on rye grass growth rate

Publications:

Trevor Dugmore. Kikuyu in South Africa: A review. Submitted to SASAS Journal in August 2017.
Nicky Findlay, 2016. Ryegrass for dairy: get your soils right. Research & Technology Bulletin 2016/05
Nicky Findlay, 2016. Perennial ryegrass for dairy cows grazing from the third-leaf stage. Research & Technology Bulletin 2016/06

Fosgate, Geoff and others – Faculty of Veterinary Science, UP.

Scientific publications:

Fosgate GT, Motimele B, Ganswindt A, Iron PV. A Bayesian latent class model to estimate the accuracy of pregnancy diagnosis by transrectal ultrasonography and laboratory detection of pregnancy-associated glycoproteins in dairy cows. Prev Vet Med 2017;145:100-109.
Mulder R, Fosgate GT, Tshuma T, Lourens DC. The effect of cow-level factors on colostrum quality, passive immunity and health of neonatal calves in a pasture-based dairy operation. An Prod Sci (in press).
Cenci-Goga B, Karama M, Sechi P, Iulietto M, Novelli S, Selvaggini R, Mattei S (2015). Growth inhibition of selected microorganisms by an association of dairy starter cultures and probiotics . Italian Journal of Animal Science, 14 pp. 246 - 256.
Nyanzi R, Shuping DSS, Jooste P, Eloff JN (2015). Antibacterial and Antioxidant Activity of Extracts from Selected Probiotic Bacteria . Journal of Food Research, 4 (NOT ACCREDITED), pp. 122 - 125.
Nyanzi R, Jooste P, Eloff JN (2016). Multi-Loci Gene Sequencing and Identification of Bifidobacteria Strains Isolated from Dairy and Pharmaceutical Sources in South Africa. FOOD BIOTECHNOLOGY, 30 (1), pp. 30 - 48.
Sserunkuma P, McGaw LJ, Nsahlai I, van Staden J (2017). Selected southern African medicinal plants with low cytotoxicity and good activity against bovine mastitis pathogens. SOUTH AFRICAN JOURNAL OF BOTANY, 111 pp. 242 - 247.

Capacities:

Epidemiological and bio-statistical capacity to help with different research projects.

Hugo, Arno and Celia – Dept. of Microbial, Biochemical and Food Biotechnology, UFS.

Projects:

The significance of proteolytic psychrotrophs as a cause of milk flocculation / protein instability
The significance of psychrotrophic chryseobacteria in milk

Scientific publications:

Bekker, A., Steyn, L., Charimba, G., Jooste, P. and Hugo, C. 2015. Comparison of the growth kinetics and proteolytic activities of Chryseobacterium species and Pseudomonas fluorescens. Canadian Journal of Microbiology 61(12): 977-982.
Bekker, A., Jooste, P., Steyn, L., Bothma, C., Hugo, A. and Hugo, C. 2016. Lipid breakdown and sensory analysis of milk inoculated with Chryseobacterium joostei or Pseudomonas fluorescens. International Dairy Journal 52: 101-106.
Tsôeu, I., Jooste, P.J., Charimba, G. and Hugo C.J. 2016. Spoilage potential of a novel group of bacteria isolated from dairy products. South African Journal of Science 112(1/2): 140-147.
Faihst, T.-J., Myburgh, J., Bothma, C., Hugo, C. and Hugo, A. 2017. The effect of conjugated linoleic acid supplementation on the microbial, physical, chemical and sensory properties of yogurt. International Journal of Dairy Technology 70(2): 228-236.

Laing, Mark – Discipline of Plant Pathology, UKZN

Projects:

Programme: Investigating alternative methods such as bacteriophages and bacteriocins

to eliminate/control mastitis organisms

Projects:

The biological control of Staphylococcus aureus-induced bovine mastitis using bacteriophage therapy; Student: Mxolisi Ndlela
The development of improved protocols for the accurate and rapid detection of mastitis in milk; Student: Mduduzi Shinga.
The application of phage for the biological control of streptococcus-induced bovine mastitis; Student: Caleb Pillay.
The extraction and assessment of bacteriocins and Bacillus spp. Lipopeptides for the management of mastitic microorganisms; Postdoctoral Researcher: Iona Basdew.
The application of near-infrared analysis as an alternative tool for mastitis detection in raw milk; Postdoctoral Researcher: Iona Basdew.

Programme:Integrated Control of Liver Flukes of Cattle Using Botanical Extracts and Biocontrol

Agents; Postdoctoral Researcher: Mawahib Ahmed.

Scientific publications:

I.H. Basdew, M.D. Laing. (2015). Investigation of the lytic ability of South African

bacteriophages specific for Staphylococcus aureus, associated with bovine mastitis.

Biocontrol Science and Technology, 25:4, 429-443, DOI: 10.1080/09583157.2014.983458

N.W. Sithole, I.V. Nsahlai, M. Chimonyo. (2015). Water and Wastewater Management in the Dairy Industry. Natsurv 4 WRC, Pretoria.

Conference Proceedings:

I.H. Basdew, M.D. Laing. (2016). Investigations into the lytic ability of South African

bacteriophages specific for Staphylococcus aureus, associated with bovine mastitis.

Proceedings of the 6th IDF International Mastitis Conference, Nantes, France.

M. Ndlela, M.D. Laing. (2016). Investigations into the lytic ability of South African bacteriophages specific for Staphylococcus aureus, associated with bovine mastitis. Proceedings of the 6th IDF International Mastitis Conference, Nantes, France.

Capacity and Research Equipment:

Near-infrared analysis unit + data package to operate software and carry out analysis
Transmission electron microscope
Scanning electron microscope
Incubators and shakers
Centrifuges
Flow cytometer
Biosafety cabinet (Level 4)
GC-MS unit

Mostert, Bernice - SA Stud Book

Technical Reports:

MOSTERT, B.E., 2015. Influence of Percentage Swedish Red Crossbreeding on Performance of Dairy Cows. For: Milk SA.
MOSTERT, B.E. & VAN DER WESTHUIZEN, R.R., 2016. Logix Milk Annual Report 2015/16. For: SA Stud Book.

Conference Proceedings:

MOSTERT, B.E., VAN DER WESTHUIZEN, R.R., VAN MARLE-KOSTER, E. & VAN DOORMAAL, B.J., 2015. Exploring methodology for application of genomic information in South African dairy breeds. Joint Annual Meeting of the American Dairy Science Association, 12 – 16 July 2015, Orlando, Florida (Poster).

VAN DER WESTHUIZEN, J., GREYLING, S., FRANCIS, S., MOSTERT, B.E. & VAN DER WESTHUIZEN, R.R., 2016. Practical use of Milk Recording Information. 10th ICAR Biennial Session, Puerto Varas, Chile.
VAN DER WESTHUIZEN, MOSTERT, B.E., VAN DER WESTHUIZEN, R.R.,
VAN MARLE-KöSTER, E. & JOUBERT, R., 2017. The South African Perspective. InterGenomics Workshop, 8 February 2017, Slovenia.

MOSTERT, B.E. Adding value through measuring. Dairy Goat Information Day organized by the Northern Cape Department of Agriculture and SA Milch Goat Society. 26 May 2016, Rietrivier Experimental Farm, Northern Cape.

MSc Thesis:BRAND, W., 2015. The development of standard lactation curves for the South

African Jersey population. MSc (Agric), Department of Animal and Wildlife Sciences,

University of Pretoria.

Capacities and expertise:

Research and Genetic Evaluation Unit: 3 PhD, 1 MSc and 2 BSc (Agric) employees in Animal

Breeding and Genetics. This unit is currently responsible for genetic evaluations of beef,

dairy, sheep and pig breeds, as well as population studies for horse and dog breeds as well.

SA Stud Book has an operational Database (Logix) designed specifically for capturing, storing

and processing of dairy data, integrated with pedigree and genomic information. SA Stud

Book also has the capacity for storage of pedigree and genomic (SNP) data for an unlimited

number of animals.

Dr BE Mostert has represented South Africa at the following Interbull Meetings :

INTERBULL Meeting, 2015. July 9 – 12. Orlando, USA.
INTERBULL Meeting, 2016. October 24-28. Puerto Varas, Chile.

Dr Japie van der Westhuizen is a board member of ICAR.

Mupangwa, John – Dept of Livestock and Pasture Science, UFH.

Information captured in B. CONGRESS PROCEEDINGS

Myburgh, Koos – Dept. of Microbial, Biochemical and Food Biotechnology, UFS.

Projects:

The production and application of bio-active components present in milk to accelerate yoghurt fermentation time, 2017
The production of lactose free milk using lactase for infants, 2016
Milk Flocculation, 2017
The impact of plasmin during flocculation and age gelation
The impact of protease produced by psychrotrophic bacteria on flocculation and age gelation.
The impact of homogenization on proteolytic enzymes
The impact of fat and free fatty acids content on proteolytic activity
The impact of various components present in milk on the activation or inhibition of Plasminogen conversion to active plasmin

Scientific Publications

Faihst T-J, Myburgh J, Bothma C, Hugo C and Hugo A. 2017. The effect of conjugated linoleic acid supplementation on the microbial, physical, chemical and sensory properties of yogurt. International Journal of Dairy Technology - Manuscript ID IJDT-0083-15.R1

Conference Presentations:

Myburgh, J and Hattingh A. 13-16 April 2015. 48th SASDT Annual Meeting and Symposium. Cape St Francis Resort, Southern Cape. “The effect of heat exposure on Β-Lactoglobulin in raw milk
Smith A and Myburgh J. 13-16 April 2015. 48th SASDT Annual Meeting and Symposium. Cape St Francis Resort, Southern Cape. “rbST in Milk” Hybrid code 11, CESM code 01
Calitz A and Myburgh J. 8-11 May 2017. 50th SASDT Annual Meeting and Symposium. Kivits Kroon, Pretoria. “The acceleration of yogurt fermentation by means of peptides derived from proteolytic pre-treatment of milk”
Hatting A and Myburgh J. 8-11 May 2017. 50th SASDT Annual Meeting and Symposium. Kivits Kroon, Pretoria. “Computer assisted identification of proteolytic peptide profiles using MILQC software”
Dube S and Myburgh J. 8-11 May 2017. 50th SASDT Annual Meeting and Symposium. Kivits Kroon, Pretoria. “The susceptibility of milk proteins towards Bacillus protease after gas pre-treatment”
Dube S and Myburgh J. 29 October to 3 November 2017. World Dairy Summit (WDS 2017) in Belfast. Ireland (UK). “The Susceptibility of Milk Proteins towards Bacillus Protease after Gas Pre-treatment”

Techniques developed or modified for the Dairy Industry:
Detection of proteolysis within milk using RP-HPLC
Detection of proteolysis in milk using modified milk agar plates
Possible retarding of proteolytic activity
Monitoring the activation of plasminogen
Develop MILQC software to enable comparison between HPLC peptides to help us to distinguish between plasmin and bacteria protease proteolytic activity.
The acceleration of yogurt production
The production of bioactive components within milk using protease
O2 measurement in milk as a function of time
Redox-potential measurement in milk as a function of time
The cultivation of psychrotrophic bacteria known to cause flocculation and age gelation in milk
The harvesting of their proteolytic enzymes for future experiments
To study their proteolytic enzymes impact on milk proteins (Casein)
The development of a method to store proteolytic and other enzymes for extended periods of time

Rust, Jean and others – Eastern Cape Dept. of Rural Development and Agrarian Reform

Projects:

The development of a simplified once a day milking protocol for the Eastern Cape dairy industry
Determining the potential of the Dexter cow as subsistence milk producer in the developing agricultural sector
Evaluation of the performance and management of Holstein calves on once a day (OAD) and twice a day (TAD) feeding from birth to weaning
Characterization of the production and consumption of milk in the communal livestock production sector of the Eastern Cape

Scientific papers:

Goni, S., Muller, C.J.C., Dube, B. & Dzama, K., 2016. Effect of crossbreeding on beef production of Jersey herd using Fleckvieh sires maintained on a pasture based feeding system. Open Journal of Animal Sciences, 6, 163-168.
Rust, J.M., & Mkhungela, M.N., 2016. The effect of milk feeding frequency on the performance of Dexter x Holstein calves from birth to weaning. Applied Animal Husbandry & Rural Development, (9), 1-5

Congress Proceedings and others:

Goni, S., Muller, C.J.C., Botha, J.A., Dube, B. & Ndzama, K. Crossbreeding effect on milk production of Jersey cows using dual-purpose Fleckvieh sires. Poster presentation delivered at 49th SASAS Congress held at Stellenbosch from 4-6 July 2016.
Mkhungela, M.N. & Rust, J.M., 2016. Evaluation of communal cattle milk production in the Eastern Cape Province. Poster presentation delivered at the 34th Congress of the South African Society for Agricultural Technologists (SASAT) held in Upington, 6-9 September 2016.
Kumbirai, K.T., Mupangwa, J.F., Muchenje, V. & Rust, J.M. 2016. Characterisation of the production and consumption of milk in the communal livestock production sector of the Eastern Cape Province, South Africa. (Msc Agric Dissertation - University of Fort Hare)

Schmidt, Tracy – Allerton PVL

Scientific publications:

T. Schmidt, M. M. Kock and M. M. Ehlers, 2015. Diversity and antimicrobial susceptibility profiling of staphylococci isolated from bovine mastitis cases and close human contacts. J. Dairy Sci. 98, 6256-6269.
T. Schmidt, M. M. Kock and M. M. Ehlers, 2015. Antimicrobial resistance in staphylococci at the human-animal interface In Antimicrobial Resistance – An Open Challenge. Edited by M. C. Ossiprandi. http://dx.doi.org/10.5772/61785
T. Schmidt, M. M. Kock and M. M. Ehlers, 2017. Molecular characterization of Staphylococcus aureus isolated from bovine mastitis and close human contacts in South African Dairy Herds: genetic diversity and inter-species host transmission. Front. Microbiol. 8:511 doi: 10.3389/fmicb.2017.00511

Conference presentations:

Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Occurrence and distribution of superantigen toxin genes in Staphylococci recovered from bovine intramammary infections and close human contacts. Oral presentation at the South African Society for Microbiology 2016 biennial congress, Umhlanga, KwaZulu-Natal, South Africa, 17-20 January 2016.
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Genetic characterization and profiling of Staphylococcus aureusstrains isolated from bovine intramammary infections and close human contacts. Poster presentation at the 26thEuropean Congress of Clinical Microbiology and Infectious Diseases, Amsterdam, The Netherlands, 09-12 April 2016.
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Molecular characterisation of Staphylococcus aureus isolated from cases of bovine mastitis and close human contacts in KwaZulu-Natal, South Africa. Oral presentation at the 6thInternational Dairy Federation Mastitis Conference, Nantes, France, 07-09 September 2016.
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Identification and characterization of Staphylococcus devriesei from bovine intramammary infections in KwaZulu-Natal, South Africa. Poster presentation at the 27th European Congress of Clinical Microbiology and Infectious Diseases, Vienna, Austria, 22-25 April 2017.
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Diversity and antimicrobial susceptibility of Staphylococcus species isolated from cases of bovine mastitis. Poster presentation at the South African Large Herds Conference, Drakensberg, 05-07 June 2017.
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers. Investigating the transmission of Staphylococcus aureus between bovines and humans working in the dairy environment. Poster presentation at the South African Large Herds Conference, Drakensberg, 05-07 June 2017.

Swanepoel, Pieter and others – Dept. of Agronomy, US

Projects:

Strategic nitrogen fertilisation of kikuyu-ryegrass and kikuyu-grass-legume pastures in the southern Cape.
Eco-efficiency of dairy pastures in South Africa. Collaborative project between Stellenbosch University, Western Cape Department of Agriculture and Christian Albrecht’s University in Kiel, Germany
A systems approach to improve nitrogen use efficiency for dairy farms in the Tsitsikamma area.

Scientific papers:

Swanepoel, PA, du Preez, CC, Botha, PR, Snyman, HA, Habig, J. 2015. Assessment of tillage effects on soil quality of pastures in South Africa with indexing methods. Soil Research 53, 1-12.
Swanepoel, PA, du Preez, CC, Botha, PR, Snyman, HA. 2015. A critical view on soil fertility status of minimum-till kikuyu-ryegrass pastures in South Africa. Special Issue: African Journal of Range & Forage Science 2(32).
Botha, PR, Zulu, LB, van der Colf J, Swanepoel P.A. 2015. Production potential of Italian and Westerwolds ryegrass established at different planting dates. African Journal of Range & Forage Science, 32, 153-9
Swanepoel, P.A., Sanderson M.A., Bell, L.W., Thomas, D.T., Bennett J.E. 2015. Southern African pasture science in the 21st century. African Journal of Range and Forage Science 2015, 32(2): iii–iv.
Swanepoel, P.A., du Preez, C.C., Snyman, H.A. Habig, J Botha, P.R. 2017. Tillage effects, soil quality and production potential of kikuyu-ryegrass pastures in South Africa. Grass and Forage Science 72: 308-321

Congress Proceedings and others:

Botha PR., van der Colf J, Zulu LB, Swanepoel PA. 2015 The effect of planting date on the dry matter production of Italian and Westerwolds ryegrass in the southern Cape of South Africa. International Grassland Congress, New Delhi, India 20 - 24 November 2015.
Swanepoel PA, Botha PR, du Preez CC, Snyman HA. 2015. A Soil Quality Index for Pastures in South Africa. Combined Congress, Tramonto, George. 19-22 January 2015.
Meldal-Johnsen A, Swanepoel PA. 2015 The Influence of Soil Types on Pasture Production and Nutrition in the Southern Cape, South Africa. Combined Congress, Tramonto, George. 19-22 January 2015.
Swanepoel PA, Botha PR, du Preez CC, Snyman HA. 2015. Impact of fertilisation on the chemical quality of cultivated pasture soil. Congress of the Grassland Society of Southern Africa. Pietermartizburg, July 2015.
Swanepoel PA, du Preez CC, Botha PR, Snyman HA, Habig J. 2016. Tillage effects, soil quality and production potential of kikuyu-ryegrass pastures in South Africa. 51st Annual Grassland Society of South Africa Congress 2016. The Wilderness Hotel Resort and Spa, Wilderness, South Africa. 3-8 July 2016.
Jordaan B, Van der Colf, J, Swanepoel PA. 2017. The effect of nitrogen fertilisation on dry matter production and botanical composition of grass-legume pastures in the southern Cape. GSSA Congress, Hoedspruit, 17-20 Augustus
Viljoen, C, Van der Colf, J, Swanepoel PA. The effect of nitrogen fertilisation on the yield and botanical composition of kikuyu- based pastures. GSSA Congress, Hoedspruit, 17-20 Augustus.
Augustyn C, Swanepoel PA, Van der Colf J. 2016. Optimising nitrogen fertilisation of kikuyu-based pastures over-sown with temperate grasses. 51st Annual Grassland Society of South Africa Congress 2016. The Wilderness Hotel Resort and Spa, Wilderness, South Africa. 3-8 July 2016
Jordaan B, Swanepoel PA, Van der Colf J. 2016. Strategic nitrogen fertilisation of kikuyu-based pastures over-sown with legumes. 51st Annual Grassland Society of South Africa Congress 2016. The Wilderness Hotel Resort and Spa, Wilderness, South Africa. 3-8 July 2016.

Capacity and equipment:

Expertise on soil quality of pasture systems
Laboratory capacity at Agronomy Department to various soil nitrogen analyses, including potentially mineralisable nitrogen, and soil biological analyses, particularly enzymes
Have access to Stellenbosch University Central Analytical Facility with capacity to do state of the art soil and plant analyses, including amongst others, DNA Sequencer, Fluorescense microscopy, ICP-MS & XRF, Mass Spectrometry and an Scanning Electron Microscopy (SEM)

Van Wyk, Jan – UP Onderstepoort (contract)

Projects:

Van Wyk, J.A., 2015-2017: Fasciola hepatica: Impact on dairy production and sustainable management on selected farms in South Africa. [University of Pretoria].
Panda, S.S., Terrill, T., Hundt, L., Novobilski, A., Van Wyk, J.A. 2017. Sustainable Animal Health Management with Real-time Remote Activity Monitoring System Development. [Universities of North Georgia (USA), Fort Valley State (USA) & Pretoria].
Van Wyk, J.A., Terrill, T., Gosuconda, M., 2017. Adaptation of software for change point analysis for animal activity monitoring data for detection of chronic animal health conditions. [Universities of Pretoria and Fort Valley State (USA)]
Morgan, E.R., Walker, J.G., Van Wyk, J.A., Ofithile, M. , 2017. Optimising rangeland management for healthy livestock and sustainable diets under climate change. Universities of Bristol (UK) and Pretoria.
Morgan, E.R., Van Wyk, J.A., 2017. Farmers doing it for themselves: self-reliant livestock disease control systems for food security. Universities of Bristol (UK) and Pretoria.

Congress Proceedings:

Van Wyk, J.A., Van Rensburg, L.J., Charlier, J., 2017. Fasciolosis: either all or nothing on even adjacent Tsitsikamma dairy farms in South Africa [University of Pretoria].
Van Wyk, J.A., 2015. Endoparasite resistance: Challenges and futuristic perspectives. AVCASA 2015 Congress, Pretoria, September 2015.

WCDA – Elsenburg [Carel Muller and others]:

Projects:

The effect of sire selection for body size or milk yield on the live weight, stature, body size, milk yield performance, feed efficiency, reproduction performance and longevity in Holstein cows.
The effect of energy source on the milk yield and reproduction performance of Holstein cows – Alain Useni – PHD(Agric)

Scientific papers:

Abel, S., Muller, C.J.C. & Sasanti, B., 2015. Methane emissions estimated based on milk fatty

acids of Jersey and Fleckvieh x Jersey cows in a pasture-based system. Proc. 21st Conf. Assoc.

Advmt. Anim. Breed. Genet. 28-30 September 2015. Lorne Victoria, Australia. p. 443-446.
Goni, S., Muller, C.J.C., Dube, B & Dzama, K., 2015. Reproductive performance of Jersey and

Fleckvieh x Jersey heifers and cows maintained in a pasture-based feeding system. S. Afr. J.

Anim. Sci. 45 (4), 379-385.

Muller, C.J.C., Potgieter, J.P., Cloete, S.W.P. & Botha, J.A., 2015. Reproductive performance of Holstein and Jersey heifers and cows in a pasture-based system in South Africa. Proc. 21st Conf. Assoc. Advmt. Anim. Breed. Genet. 28-30 September 2015. Lorne, Victoria Australia. p. 439-442.
Muller, C.J.C., Potgieter, J.P., Cloete, S.W.P. & Botha, J.A., 2015. Reproductive performance of Holstein and Jersey heifers and cows in a pasture-based system in South Africa. Proc. 21st Conf. Assoc. Advmt. Anim. Breed. Genet. 28-30 September 2015. Lorne Victoria, Australia. p. 443-446.
Sasanti, B., Abel, S., Muller, C.J.C., Gelderblom, W.C.A. & Schmulian, A., 2015. Milk fatty acid composition and conjugated linoleic acid content of Jersey and Fleckvieh x Jersey cows in a pasture-based feeding system. S. Afr. J. Anim. Sci. 45 (4), 411-418.
Useni, B.A., Muller, C.J.C. & Cruywagen, C.W., 2015. Effect of energy sources on the milk production and reproduction of lactating Holstein cows. East Afr. Agric. & For. J. http://dx.doi,org/10.1080/00128325.2015.1120517. Presented at 6th All Africa Conference on Animal Agriculture. Naorobi, Kenya, 27-30 October 2014.
Goni, S., Muller, C.J.C., Dube, B. & Dzama, K., 2016. Effect of crossbreeding on beef production of Jersey herd using Fleckvieh sires maintained on a pasture-based feeding syste. Open Journal of Animal Sciences, 6, 163-168.
Muller, C.J.C., De Waal, H.L. & Scholtz, M.M., 2017. Preliminary estimates of productive lifetime and lifetime efficiency in Holstein cows as affected by age at first calving. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 115.
De Waal, H.L., Muller, C.J.C. & Scholtz, M.M., 2017. Productive lifetime and lifetime efficiency in Holstein cows as affected by first lactation milk yield. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 117.
Muller, C.J.C., Metaxas, L. & Cloete, S.W.P., 2017. Somatic cell count and milk urea nitrogen levels in Holstein and Fleckvieh x Holstein cows in a total mixed ration feeding system. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 122.

Congress Proceedings:

Burger, M. Muller, C.J.C. & Botha, J.A., 2015. Factors affecting the occurrence of laminitis in dairy cows. A review. 48thSASAS Congress, 21-23 September 2015. Empangeni, Kwazulu-Natal. p. 31.
De Waal, H.L., Muller, C.J.C. & Van der Rijst, M., 2015. Non-genetic factors affecting the efficiency of lifetime performance of South African Holstein cows. 48th SASAS Congress, 21-23 September 2015. Empangeni, Kwazulu-Natal. p. 19.
Goni, S., Muller, C.J.C., Dube, B. & Dzama, K., 2015. Effect of crossbreeding on beef production of a Jersey herd using Fleckvieh sires. 48th SASAS Congress, 21-23 September 2015. Empangeni, Kwazulu-Natal. p. 24.
Muller, C.J.C. & Botha, J.A., 2015. Production performance of Holstein and Jersey cows in a pasture-based system. 48thSASAS Congress, 21-23 September 2015. Empangeni, Kwazulu-Natal. p. 81.
Muller, C.J.C., Potgieter, J.P., Cloete, S.W.P. & Botha, J.A., 2015. Reproductive performance of Holstein and Jersey heifers and cows in a pasture-based system. 48th SASAS Congress, 21-23 September 2015. Empangeni, Kwazulu-Natal. p. 32.
Useni, B.A., Muller, C.J.C. & Cruywagen, C.W., 2015. Effect of energy sources on energy partition and milk production of dairy cows. Proceedings of the 48th SASAS Congress, Empangeni, 21-23 September.
Abel, S., Muller, C.J.C. & Sasanti, B., 2015. Methane emissions estimated based on milk fatty acids of Jersey and Fleckvieh x Jersey cows in a pasture-based system. Proc. 21st Conf. Assoc. Advmt. Anim. Breed. Genet. 28-30 September 2015. Lorne, Victoria Australia. p. 439-442.
Muller, C.J.C., Potgieter, J.P., Cloete, S.W.P. & Botha, J.A., 2015. Reproductive performance of Holstein and Jersey heifers and cows in a pasture-based system in South Africa. Proc. 21st Conf. Assoc. Advmt. Anim. Breed. Genet. 28-30 September 2015. Lorne, Victoria Australia. p. 439-442.
Muller, C.J.C. & Botha, J.A., 2016. Heat stress in dairy cows and ways to alleviate it. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 2.
Goni, S., Muller, C.J.C., Botha, J.A., Dube, B. & Dzama, K., 2016. The effect of crossbreeding on milk production parameters using dual-purpose Fleckvieh sires on Jersey cows. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 143.
Muller, C.J.C., Burger, M. & Botha, J.A., 2016. Monitoring reproduction management towards improved fertility in dairy cows. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 140.
Muller, C.J.C., Potgieter, J.P., Cloete, S. & Botha, J.A., 2016. The reproduction performance of Hostein herds. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 106.
Useni, B.A., Muller, C.J.C. & Cruywagen, C.W., 2016. Effect of different feeding regimes during the dry period on subsequent milk production and fertility traits of Holstein cows. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 21.
Useni, B.A., Muller, C.J.C. & Cruywagen, C.W., 2016. Effect of energy sources on ovarian follicular dynamics of dairy cows. 49th SASAS Congress, 4-6 July 2016. Stellenbosch, Western Cape Province. p. 148.
Muller, C.J.C., De Waal, H.L. & Scholtz, M.M., 2017. Preliminary estimates of productive lifetime and lifetime efficiency in Holstein cows as affected by age at first calving. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 115.
De Waal, H.L., Muller, C.J.C. & Scholtz, M.M., 2017. Productive lifetime and lifetime efficiency in Holstein cows as affected by first lactation milk yield. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 117.
Muller, C.J.C., Metaxas, L. & Cloete, S.W.P., 2017. Somatic cell count and milk urea nitrogen levels in Holstein and Fleckvieh x Holstein cows in a total mixed ration feeding system. Proc. 22nd Conf. Assoc. Advmt. Anim. Breed. Genet. 3-5 July 2017. Townsville, Queensland Australia. Poster 122.

WCDA – Outeniqua (Robin Meeske and others):

Projects:

The effect of anion/cation difference and potassium content of the diet on heat stability of milk – Meeske.
Evaluation of maize silage countrywide – Meeske.
Measurement of methane emissions of dairy cows on pasture – van Wyngaard.
Evaluation of pasture species and varieties for dairy production – Ammann.
The potential of chicory and plantain in pasture mixes for dairy production – Ammann.
The production potential of annual and perennial temperate grass varieties – van der Colf.
The evaluation of Kikuyu over-sown with temperate grasses and legumes – van der Colf.
Replacing maize grain in the concentrate supplement with apple pomace – Steyn.
Essential oil as feed-additive for Jersey cows grazing ryegrass pasture – Moller.

Publications and reports: See B. Congress Proceedings etc.

B. CONGRESS PROCEEDINGS TO INDICATE EXPERTISE AND CAPACITY:

1. SA Society for Animal Science:
  1. 2015 – 48th Congress, Empangeni.
    1. Factors affecting the occurrence of laminitis in dairy cows: A Review. M. Burger, C.J.C. Muller et al. Western Cape Department of Agriculture, Elsenburg.
    2. Comparison of two approaches to account for G X E interactions for production traits in South African Holstein cattle. J.B. van Wyk, F.W.C. Neser et al. Dept. of Animal, Wildlife and Grassland Sciences, UFS, Bloemfontein.
    3. The influence of donor age and lactation category on embryo yield of Holstein cattle. H. Lambrechts et al. Dept. of Animal Sciences, US, Stellenbosch.
    4. Effect of semen collection methods and cooling rates on Saanen semen prior to cryopreservation. K.C. Lehloenya, C. Visser et al. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    5. Effect of selenium supplementation on testicular characteristics and semen quality of Saanen bucks. K.C. Lehloenya. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    6. Isolation, identification and characterisation of lactic acid bacteria from South African Saanen Goat’s milk and their traits as future probiotics. G. Makete, O.A. Aiyegoro et al. GI Microbiology and Biotechnology Unit, ARC-Animal Production Institute, Irene.
    7. The composition, compaction and aerobic stability of maize silage in South Africa. R. Meeske. Western Cape Department of Agriculture, Outeniqua. O.B. Einkamerer. Dept. of Animal, Wildlife and Grassland Sciences, UFS, Bloemfontein.
    8. Effect of selenium and semen collection methods on Saanen semen. K.C. Lehloenya, J.B.J. van Ryssen et al. Dept of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    9. The use of Oregano as feed additive for dairy cows grazing on ryegrass pasture in spring. R. Meeske. Western Cape Department of Agriculture, Outeniqua. C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch.
    10. The accuracy of pregnancy-associated glycoproteins ELISA tests for early pregnancy diagnosis in South African dairy herds. B. Motimele. ARC-Animal Production Institute. G. Fosgate and P. Irons. Dept. of Production Animal Studies, UP, Onderstepoort.
    11. Behavioural assessment of three genotypes of primiparous and multiparous cows around calving time on a pasture-based dairy system. Z. Mpisana and V. Munchenje. Dept. of Livestock and Pasture Science, UFH, Alice.
    12. Reproductive performance of Holstein and Jersey heifers and cows on a pasture-based system. C.J.C. Muller et al. Western Cape Department of Agriculture, Elsenburg.
    13. Recent advances in dairying. J. Tucker, Chemunique, Johannesburg.
    14. Effect of energy sources on energy partition and milk production of dairy cows. B.A. Useni, C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch.
    15. Evaluation: Sulphur hexa-fluoride tracer gas technique for estimating methane emissions from grazing Jersey cows. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Outeniqua.
    16. Non-genetic factors affecting the efficiency of lifetime performance of South African Holstein cows. H.L. De Waal. ARC-Animal Production Institute, Stellenbosch. C.J.C. Muller. Western Cape Department of Agriculture, Elsenburg.
    17. The application of advanced interactive Livestock Management Reports in INTERGIS, based on official milk performance recording. J. Du Toit and M.J. Viljoen. ARC-Animal Production Institute, Stellenbosch.
    18. Effect of crossbreeding on beef production of a Jersey herd using Fleckvieh sires. S. Goni. Döhne Agricultural Development Institute. C.J.C. Muller. Western Cape Department of Agriculture. B. Dube and K. Dzama. Dept. of Animal Sciences, US, Stellenbosch.
    19. Effect of ß-carotene supplementation and oestrus synchronisation on ovarian activity and fertility of Saanen does. D.L.M. Gore and K.C. Lehloenya. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    20. Allelic variation of αs2-casein in South African dairy goats. R. Grobler, C. Visser and E. van Marle-Köster. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    21. Evaluating impact of non-genetic factors on functional longevity in South African Holsteins with a Weibull PH model. C.B. Banga and A. Maiwashe. ARC-Animal Production Institute, Irene. J.B. van Wyk. Dept. of Animal, Wildlife and Grassland Sciences, UFS, Bloemfontein. K.Dzama. Dept. of Animal Sciences, US, Stellenbosch.
    22. Milk production on emerging farms of Eastern Free State Province: A case study of Maluti a Phofung area 114. T.W. Kekana, F.V. Nherera et al. ARC-Animal Production Institute, Irene.
    23. The influence of superovulation protocol on yield and and developmental competence of oocytes obtained from Holstein cattle. H. Lambrechts, W.J. Coertze et al. Dept. of Animal Sciences, US, Stellenbosch.
    24. The effects of breed and parity on the number of days open amongst multiparous dairy cows. W. Maguraushe, V. Maphosa and V. Muncheje. Dept. of Livestock and Pasture Science, UFH, Alice.
    25. Lucerne leaf-meal nutrition for Holstein heifer neonates and calves. J.L. Mangena and J.W. N’gambi. University of Limpopo, Sovenga. F.V. Nherera and M.C. Muya. ARC-Animal Production Institute, Irene.
    26. Effects of virginiamycin and live yeast on productivity, rumen volatile fatty acids and plasma ß-hydroybutyrate of Holstein cows. P.M. Moshidi. TUT, Pretoria. N.P. Shabangu. University of Venda, Thohoyandu. FV. Nherera and M.C. Muya. ARC-Animal Production Institute, Irene.
    27. Production performance of Holstein and Jersey cows in a pasture-based system. C.J.C. Muller and J.A. Botha. Western Cape department of Agriculture, Elsenburg.
    28. Breeding and management practices on small holder and emerging dairy herds in South Africa. A.E. Muntshu and C.B. Banga. ARC-Animal Production Institute, Irene. D. Norris. University of Limpopo, Sovenga.
    29. The effect of oregano essential oil on milk production responses of Holstein cows. N. Nowers and C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch.
    30. Dairying in Sub-Tropical regions – Makhathini research Station. P.A. Oosthuizen and E.A. van Zyl. KZN Department of Agriculture and Rural Development, Dundee. T. J. Dugmore. KZN department of Agriculture and Rural Development, Cedara.
    31. Genetic trends for residual butterfat and residual protein in South African Holstein cattle. N. Ramatsoma, C.B. Banga et al. ARC-Animal Production Institute, Irene.
    32. Oestrus synchronization response in communal cows of Limpopo Province. Z.C. Raphalalani, K.A. Nepawe et al. Dept. of Animal Science, TUT, Pretoria.
    33. Effects of maize processing and dietary protein on lactation performance by Holstein cows. N.P. Shabangu, M.C. Muya et al. ARC-Animal Production Institute, Irene. Water conservation and effluent generation in dairy processing plants. N.W. Sithole, M. Chimonyo and I.V. Nsahlai. Animal and Poultry Science, UKZN, Pietermaritzburg.
    34. Rumen response in Jersey cows grazing ryegrass pastures to two levels of high fibre concentrate supplementation. L. Steyn and C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch. R. Meeske. Western Cape Department of Agriculture, Outeniqua.
    35. Effect of palm kernel expeller supplementation on rumen fermentation of Jersey cows grazing kikuyu-based pastures. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Outeniqua.
    36. The effect of lucerne (Medicago sativa) hay quality and rate of fermentation on rumen parameters of Jersey cows. M. van Zyl, G.D.J. Scholtz and O. B. Einkamerer. Dept. of Animal, Wildlife and Grassland Sciences, UFS, Bloemfontein. R. Meeske. Western Cape Department of Agriculture, Outeniqua.
  2. 2016 - 49th Congress, Stellenbosch.
    1. Heat stress in dairy cows and ways to alleviate it. C.J.C. Muller and J.A. Botha. Western Cape Department of Agriculture, Elsenburgh.
    2. The effect of concentrate feeding level on enteric methane and milk production parameters of Jersey cows on ryegrass. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Outeniqua. L.J. Erasmus. Dept. of Animal and Wildlife Science, UP, Hatfield, Pretoria.
    3. The effect of increasing sugar and pectin content in the concentrate on milk production and composition of dairy cows grazing kikuyu-ryegrass pasture in summer. L. Steyn and R. Meeske. Western Cape Department of Agriculture, Outeniqua. C.W. Cruywagen, Dept. of Animal Sciences, US, Stellenbosch.
    4. Composition, compaction, aerobic stability and organic matter loss of maize silage on South African farms. R. Meeske. Western Cape Department of Agriculture, Outeniqua. R. Venter. Kemin Industries, Olifantsfontein.
    5. Effect of different feeding regimes in the dry period on subsequent milk production and fertility traits of Holstein cows. B.A. Useni and C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch. C.J.C. Muller. Western Cape Department of Agriculture, Elsenburg.
    6. Body condition and milk production of primiparous dairy cows on low concentrate diets. M.C. Akinsola et al. University of South Africa, Florida. F.V. Nherera-Chokuda et al. ARC-Animal Production Institute, Irene.
    7. Serum protein concentrations in peri-partum and early lactation primiparous Jersey cows on smallholder farms in Limpopo Province. T.W. Kekana, F.V. Nherera-Chokuda et al. ARC-Animal Production Institute, Irene. K.C. Lehloenya. Dept. of Animal and Wildlife Science, UP, Hatfield, Pretoria.
    8. Factors affecting sensitivity and specificity of three pregnancy-associated glycoprotein ELISA tests in South African dairy herds. B. Motimele and A. Kanengoni. ARC-Animal Production Institute, Irene. G. Fosgate and P.C. Irons. Dept. of Production Animal Studies, UP, Onderstepoort.
    9. Milk yield and quality, nitrogen metabolism and rumen fermentation parameters in dairy cows fed different levels of concentrate and live yeast. N.P. Shabangu and J.J. Baloyi. University of Venda, Thohoyandou. M.C. Muya. ARC-Animal Production Institute, Irene.
    10. CLA dietary supplementation in transition dairy cows affects calves’ performance. C. Cardoso and C. Esposito. Dept. of Production Animal Studies, UP, Onderstepoort.
    11. The reproduction performance of Holstein herds. C.J.C. Muller and J.P. Potgieter. Dept. of Animal Sciences, US, Stellenbosch. S. Cloete. DIMMSA, Heilbron.
    12. The reference population for imputation and genomic selection in beef and dairy cattle. S. Mdyogolo, M.M. Scholtz and M.L. Makgahlela. ARC-Animal Production Institute, Irene. F.W.C. Neser. Dept. of Animal, Wildlife and Grassland Sciences, UFS, Bloemfontein.
    13. Monitoring reproduction management towards improved fertility in dairy cows. C.J.C. Muller. Dept. of Animal Sciences, US, Stellenbosch. M. Burger and J.A. Botha. Western Cape Department of Agriculture, Elsenburg.
    14. Effects of parity, calving year and calving season on the milk yield and milk composition of Holstein cows. A.R.P. Disethle and U. Marume. Dept. of Animal Sciences, NWU, Mmabatho. G.S. gajana. Dept. of Livestock and Pasture Science, UFH, Alice.
    15. The application of interactive reproduction reports in INTERGIS, based on official milk performance recording. J. du Toit et al. ARC-Animal Production Institute, Stellenbosch.
    16. The effect of crossbreeding on milk production parameters using dual-purpose Fleckvieh sires on Jersey cows. S.Goni. Döhne Agricultural Development Institute, Stutterheim. C.J.C. Muller and J.A. Botha. Western Cape department of Agriculture, Elsenburg. B. Dube. ARC-Animal Production Institute, Irene. K. Dzama. Dept. of Animal Sciences, US, Stellenbosch.
    17. Effect of body condition scoring at calving on milk yield and blood glucose concentration in smallholder Jersey cows. K.M. Manyama et al. ARC-Animal Production Institute.
    18. The effect of dietary concentrate level and live yeast (Saccharomyces cerevisiae) on the milk yield and rumen fermentation in dairy cows. M.C. Muya et al. ARC-Animal Production Institute, Irene. J.J. Baloyi. University of Venda, Thohoyandou.
    19. Body condition and milk yield of first lactation cows on smallholder dairy cows. F.V. Nherera-Chokuda. ARC-Animal Production Institute, Irene. M. Kgama et al. Department of Agriculture, Towoomba Research Station, Limpopo Province.
    20. Yield, composition and bacteriology of raw milk from semi-intensive smallholder systems in South Africa. F.V. Nherera-Chokuda et al. ARC-Animal Production Institute, Irene. C.J. Smit et al. University of South Africa, Florida. J.L. Marumo. NWU, Mafikeng Campus.
    21. Effect of energy sources on ovarian follicular dynamics of dairy cows. B.A. Useni and C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch. C.J.C. Muller. Western Cape Department of Agriculture, Elsenburg.
    22. Predicting methane emissions of Jersey cows on pasture. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Elsenburg. L.J. Erasmus. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    23. Effects of ß-carotene supplementation on ovarian and glutathione peroxidise activity following synchronised oestrus in Saanen goats. G.L.M. Gore and K.C. Lehloenya. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
  3. 2017-50th Congress, Port Elizabeth.
    1. Characterization of emerging and smallholder production systems in South Africa. A.E. Muntswu and C.B. Banga. ARC-Animal Production Institute, Irene. T. Chitura. University of Limpopo, Sovenga.
    2. Rearing dairy bull calves by communal farmers in the Eastern Cape: Current strategies, challenges and opportunities. B. Moyo and P. Nakalebe. Fort Cox Agriculture and Forestry Training Institute, King Williamstown.
    3. The milk yield and live weight of Holstein cows as affected by selection strategy. C.J.C. Muller. Dept. of Animal Sciences, US, Stellenbosch. M. Burger and J.A. Botha. Western Cape Department of Agriculture, Elsenburg.
    4. Joint genetic evaluation of dairy cattle for Sub-Saharan Africa: A case study for Kenya, South Africa and Zimbabwe. C.B. Banga with international authors. ARC-Animal Production Institute, Irene.
    5. Effects of compounding dairy faeces and vegetation on methane production from anaerobic batch and continuous cultures. E. Sihlangu and D. Luseba. Dept. of Animal Sciences, TUT, Pretoria. F.V. Nherera-Chokuda. ARC-Animal Production Institute, Irene.
    6. Productive lifetime and lifetime efficiency in Holstein cows as affected by non-genetic factors. H.L. de Waal. ARC-Animal Production Institute, Stellenbosch. C.J.C. Muller. Dept. of Animal Sciences, US, Stellenbosch. M.M. Scholtz. ARC-Animal Production institute, Irene.
    7. Measured vs predicted methane emissions of pasture-based dairy cows. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Outeniqua. L.J. Erasmus. Dept. of Animal and Wildlife Sciences, U, Hatfield, Pretoria.
    8. Effect of concentrate level on enteric fermentation of pasture-based dairy cows. J.D.V. van Wyngaard and R. Meeske. Western Cape Department of Agriculture, Outeniqua. L.J. Erasmus. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria.
    9. Laser methane detector: Not a practical measurement tool for pasture-based dairy systems. J.D.V. van Wyngaard and L.J. Erasmus. Dept. of Animal and Wildlife Sciences, UP, Hatfield, Pretoria. R. Meeske. Western Cape Department of Agriculture, Outeniqua. C.J.L. du Toit. Dept. of Animal Sciences, TUT, Pretoria
    10. Effect of potassium content in the diet of dairy cows on alcohol stability of milk. J.L. Joubert. Hipra Animal Health, Menlyn, Pretoria. R. Meeske. Western Cape Department of Agriculture, Outeniqua.
    11. The effect of dried apple pomace as the main energy source for Jersey cows grazing ryegrass pasture. L. Steyn and R. Meeske. Western Cape Department of Agriculture, Outeniqua. C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch.
    12. The effect of replacing maize with dried apple pomace on rumen parameters of dairy cows grazing kikuyu pasture. L. Steyn and R. Meeske. Western Cape Department of Agriculture, Outeniqua. C.W. Cruywagen. Dept. of Animal Sciences, US, Stellenbosch.
    13. Evaluation of probiotic effects on the degradation of transition cow forage rations high in slowly degradable structural carbohydrates (fraction B2). M.C. Akinsola and V.K. Mbatha. University of South Africa, Florida. F.V. Nherera-Chokuda. ARC-Animal Production Institute, Irene.
    14. Effects of essential oil from Eucalyptus globules on blood metabolites and milk production of primiparous Jersey cows. P.M. Moshidi and J.F. Mupangwa. Dept. of Livestock and Pasture Science, UFH, Alice. F.V. Nherera-Chokuda and M.C. Muya. ARC-Animal Production Institute, Irene.
    15. Assessment of available reproduction data for use in genetic analyses of fertility in South African Holstein cattle. R.D. Kgari and M.L. Makgahlela. ARC-Animal Production Institute, Irene. C.J.C. Muller. Dept. of Animal Sciences, US, Stellenbosch.
    16. Comparative performance of cows in smallholder and commercial dairy production systems in South Africa. S. Abin and C. Visser. Dept. of Animal and Wildlife Science. Up, Hatfield, Pretoria. C.B. Banga. ARC-Animal Production Institute, Irene.
    17. Effect of herb antioxidants on blood proteins and milk quality of early lactating dairy cows. T.W. Kekana et al. ARC-Animal Production Institute, Irene. K.C. Lehloenya. Dept. of Animal and Wildlife Science, UP, Hatfield, Pretoria.
    18. Genetic and phenotypic relationships among yields of milk, fat and protein in South African Guernsey cattle. T.F. Kekana et al. ARC-Animal Production Institute, Irene. K.A. Nephawe. Dept of Animal Science, TUT, Pretoria.
    19. A whole farm model for quantifying total greenhouse gas emissions on South African dairy farms. R. Reinecke. FarmVision, Jefferys Bay. N.H. Casey. Dept. of Animal and Wildlife Science, UP, Hatfield, Pretoria.
2. Grassland Society of SA.
  1. 2015-50th Congress, Pietermaritzburg.
    1. Early growth performance of dolichos (Lablab purpureus) fodder banks for communal dairy cattle in the Eastern Cape Province. H. J. van Rooyen et al. ARC-Animal Production Institute, Irene.
    2. Early growth performance of spineless cactus pear (Opuntia spp.) fodder banks for communal dairy cattle in the Limpopo Province. P. J. J. Breytenbach et al. ARC-Animal Production Institute, Irene.
    3. Evaluation of tillage effects on soil quality of kikuyu-ryegrass pastures. P.A. Swanepoel. Stellenbosch University. P. R. Botha. Western Cape Department of Agriculture, Outeniqua. C. C. du Preez and H. A. Snyman. University of the Free State.
    4. The monthly growth rate and total dry matter production of annual ryegrass cultivars in the southern Cape of South Africa. L. B. Zulu et al. Western Cape Department of Agriculture, Outeniqua.
    5. Relating canopy cover to water use of kikuyu pasture over-sown with temperate grasses or legume. M. Murphy and P.R. Botha. Western Cape Department of Agriculture, Outeniqua. W. F. Truter. University of Pretoria. P. A. Swanepoel.Stellenbosch University.
    6. Water use of mixed grass (kikuyu, ryegrass, cocksfoot and tall fescue species) and legume (clover and lucerne) pastures. O. Sehoole, W. F. Truter and J.Annandale. University of Pretoria.
    7. Pasture plant breeding in South Africa: lessons from the past and future needs. S. B. Ammann and D.W. Goodenough. ARC - Animal Production Institute, A. Smith. Stats4science.
    8. The seasonal and annual dry matter production of Festulolium hybrids compared to Festuca spp. and Lolium spp. in the southern Cape. J. van der Colf and P. R. Botha. Western Cape Department of Agriculture, Outeniqua.
    9. Impact of fertilisation on the chemical quality of cultivated pasture soil. P.A. Swanepoel. Stellenbosch University. P. R. Botha. Western Cape Department of Agriculture, Outeniqua. C. C. du Preez and H. A. Snyman. University of the Free State.
    10. Evaluation of grazing Jersey and Angus/Jersey nurse cows in a multiple suckling calf rearing system. J. D. V. van Wyngaard and R. Meeske. Department of Agriculture Western Cape, Outeniqua.
    11. Inter- and intra-species competition as influenced by variable seeding rates and nurse crop association. D. J. Coetzee. Advance Seed, South Africa. W. F. Truter. University of Pretoria. C. S. Dannhauser. University of Limpopo, Sovenga.
  2. 2016 – 51st Congress, Wilderness.
    1. What is known about forage herbs and their potential use in South Africa: Cichorium intybus and Plantago lanceolata. S. Ammann and D. Lombard. Western Cape Department of Agriculture, Outeniqua.
    2. Seasonal herbage yield of Italian and perennial ryegrass varieties with emphasis on those with extended summer growth after flowering. K. Mohubedu et al. KZN Department of Agriculture and Rural Development, Cedara.
    3. Tillage effects, soil quality and production potential of kikuyu-ryegrass pastures in South Africa. P.A. Swanepoel and J. Habig. University of Stellenbosch. P. Botha. Western Cape Department of Agriculture, Outeniqua. C. Du Preez and H.A. Snyman. University of the Free State.
    4. Pasture dry matter yield of perennial ryegrass and ryegrass hybrids in the Southern Cape. J. van der Colf et al. Western Cape Department of Agriculture, Outeniqua.
    5. The growth rate and total dry matter production of annual ryegrass in the Southern Cape. J. van der Colf et al. Western Cape Department of Agriculture, Outeniqua.
    6. The production potential and botanical composition of kikuyu over-sown with temperate grass-legume mixtures using different establishment methods. J. van der Colf. Western Cape Department of Agriculture, Outeniqua.
    7. Rearing and finishing Angus/Jersey calves in a pasture-based beef production system. J.D.V. van Wyngaard et al. Western Cape Department of Agriculture, Outeniqua.
  3. 2017 – 52nd Congress, Wits Rural Facility, Hoedspruit.
    1. Morphological differences between chicory varieties and the potential of using plant height as a measure of yield. S. Ammann and J.van der Colf. Western Cape Department of Agriculture, Outeniqua.
    2. The effect of nitrogen fertilization on dry matter production and botanical composition of grass-legume pastures in the southern Cape. B. Jordaan and J. van der Colf. Western Cape Department of Agriculture, Outeniqua. P.A. Swanepoel. University of Stellenbosch.
    3. Effects of salinity on germination performance of selected Lolium and Eragrostis grass species. M. Mangwane, I.C. Madakatze et al. UFH, Alice.
    4. Effect of cutting on dry matter and total non-structural carbohydrate percentages of ten selected Italian ryegrass cultivars. N.P. Rakau, N.K. Mohubedu et al. ARC-Animal Production Institute, Cedara.
    5. Effect of cutting stages on re-growth dry matter production and nutritional value of five winter cereal cultivars in Moloto district Gauteng and Nooitgedacht Mpumalanga Province. N.P. Rakau. ARC-Animal Production Institute, Cedara. C.S. Dannhauser. University of Limpopo, Sovenga.
    6. The biomass production and nutrient content of Perenial ryegrass (lolium perenne (L)), Cocksfoot (Dactylis glomerata (L)) and Tall fescue (Festuca arundunacea (Schreb)) varieties grown under irrigation in Alice, South Africa. S. Tikwayo and J.S. Mupangwa. UFH, Alice.
    7. The effect of nitrogen fertilisation on the yield and botanical composition of kikuyu-based pastures. C. Viljoen and J. van der Colf. Western Cape Department of Agriculture, Outeniqua. P.A. Swanepoel. University of Stellenbosch.
    8. Anti-nutrients and in vitro digestibility of Lablab purpureus and Vigna unquiculata forage legumes. W. Soul, J.S. Mupangwa and V. Muncheje. UFH, Alice.
3. SA Society of Dairy Technology.
  1. 2016 – 49th Annual Symposium, Umhlanga.
    1. Listeria monocytogenes in food: Control by monitoring the food processing environment. P.J. Jooste. TUT, Pretoria.
    2. Is milk good for you? J. Kruger. Department of Food Science, UP, Hatfield, Pretoria.
    3. Metabolism and health effects of lactose and galactose in dairy. M. Vermaak. Consumer Education of Milk SA.
  2. 2017 – 50th Annual Symposium, Kievits Kroon, Pretoria..
    1. Source tracking of Bacillus cereus in an extended shelf life milk processing plant. D.T. Mugadza and E.M. Buys. Dept of Food Science, UP, Hatfield, Pretoria.
    2. Modelling the survival of acid and salt stressed Listeria monocytogenes in a lactic soft cheese stored at 40C. T. Sibanda and E.M. Buys. Dept of Food Science, UP, Hatfield, Pretoria.
    3. Quantitative risk assessment fo shigatoxin producing E. coli in bulk milk sold directly from producer to consumer. V. Ntuli and E.M. Buys. Dept. of Food Science, UP, Hatfield, Pretoria.
    4. Casein and casein micelle structure. G. Osthoff et al. Dept. of Food Science, UFS, Bloemfontein.
    5. Effect of cleaning in place on the germination of Bacillus cereus spores in extended shelf life milk. C. Kruger and E.M. Buys. Dept. of Food Science, UP, Hatfield, Pretoria.
    6. The effect of cleaning-in-place on Bacillus subtilis and the effect on its enzymes on extended shelf life milk. N. Adonis and E.M. Buys. Dept. of Food Science, UP, Hatfield, Pretoria.
    7. The effects of nisin, sonorensin and cation sequestration on the biofilm of Bacillus subtilis from dairy processing plant. J.A. Elegbeleye and E.M. Buys. Dept. of Food Science, UP, Hatfield, Pretoria.
    8. Quality characteristics of Roselle-flavoured ice cream. T.M. Singo. University of Venda, Thohoyandu.
    9. Milk of other species: Impala milk. S. Kobeni, G. Osthoff et al. Dept. of Food Science, UFS, Bloemfontein.
    10. The susceptibility of milk proteins towards Bacillus protease after gas pre-treatment. S. Dube and J. Myburgh. Dept. of Food Science, UFS, Bloemfontein.
    11. Computer assisted identification of proteolytic peptide profiles using MILQC software. A. Hattingh and J. Myburgh. Dept. of Food Science, UFS, Bloemfontein.
    12. The acceleration of yogurt fermentation by means of peptides derived from proteolytic pre-treatment of milk. A. Calitz and J. Myburgh. Dept. of Food Science, UFS, Bloemfontein.
    13. A phylogenetic comparison of the milk of African mammals. G. Osthoff and A. Hugo. Dept. of Food Science, UFS, Bloemfontein.