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Dairy R&D in SA

Title Date Discipline Extract Keywords
CONTROL OF STAPHYLOCOCCUS AUREUS BY BACTERIOPHAGES – A PROGRESS REPORT ON THE RESEARCH PROJECT.

Discipline: mastitis; 

Principal researcher: Dr Iona Basdew, UKZN

 Staph. aureus, mastitis, in vivo control, bacteriophages
FORCED GEOGRAPHICAL DISTRIBUTION OF DAIRY PRODUCTION IN SOUTH AFRICA DUE TO CLIMATE CHANGE

Discipline: environment;

 climate change, climate variables, Maxent modelling, temperature-humidity index
DISTINGUISHING BETWEEN BACTERIAL PROTEASE AND PLASMIN INDUCED MILK FLOCCULATION.

Discipline: shelf life; Key words: milk flocculation, heat exposure, proteases, plasmin, psychrotrophic bacteria, MILQC software.
EFFECT OF HERB ANTIOXIDANTS ON BLOOD PROTEINS AND MILK QUALITY IN EARLY LACTATING DAIRY COWS.

Discipline: health and welfare; Key words: plant herbs, immune response, oxidative stress, antioxidants, serum protein, milk composition. 
SUMMARIZED REPORT OF PROGRESS WITH PROJECTS FUNDED IN 2017.

Discipline: management; Key words: liver fluke, mastitis, milk flocculation, performance.

HISTORY OF MINIMUM TILLAGE AND SOIL IMPROVEMENT IN KIKUYU-RYEGRASS PASTURES AND THE CONSEQUENCES OF POOR ADVICE.

Discipline: grazing/pastures; Key words: cultivated pastures, fertilisation, nutrient cycling, phosphorus, soil fertility
CONSOLIDATED 2018 THIRD QUARTER RESEARCH PROGRESS REPORT.

 Author: Heinz Meissner, Milk SA Program Manager R & D, November 2018.   

1. Mastitis Program:

1.1. PRJ-0210 Antimicrobial resistance on dairy farms - Screening mastitis causing coliforms for the production of extended spectrum Beta-lactamases and Colistin resistance. Dr Inge-Marie Petzer.
AGE GELATION IN LONG LIFE MILK.

The Dairy Industry loses millions of Rand per annum due to age gelation of milk that reduces its shelf life. Age gelation can be induced by anything that has an impact on the suspension of the negative charge on the casein micelle during storage of long life (UHT) milk. This includes the enzymatic or chemical processes that occur during storage. The enzymatic processes involve the action of plasmin (native enzyme) or heat stable microbial proteases.
DEVELOPING ANALYSIS SUPPORT FOR VALUE-ADDITION TO AUTOMATED SYSTEMS.
  1. A newly developed system of obtaining Dairy Cattle farm-recorded data from automated systems to be used for biological and economic benchmarking as well as future genetic merit predictions

     by DA Kruger, RR vd Westhuizen & D Victor, SA Stud Book, Bloemfontein, South Africa.

 
SUPPLEMENTATING DAIRY COWS WITH MORINGA LEAF MEAL.

Vitamins, mostly A, C and E, and minerals, such as selenium, copper and zinc, have been used to mitigate oxidative stress. However, in confined systems, the risk of over- or undersupplying micro elements is high, hence the overproduction of pro-oxides is common. Additionally, in semi-intensive feeding systems, trace elements, particularly antioxidant supplementation, are limited owing to restricted or lack of supplementation. Therefore, research focus has shifted to exploration of the potential of natural antioxidants in improving animal production and health.