by Heinz Meissner
Click on any of the publications below to read more about the specific topic:
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Click on any of the publications below to read more about the specific topic:
Title | Date | Discipline | Extract | Keywords |
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Genetic analysis of lactation consistency using daily milk weights in U.S. Holsteins. |
The ability of a dairy cow to perform similarly across time is clearly important and should be included in breeding programmes if feasible and heritable, since this would be linked to resilience. Consistency, defined as the quality of performing as expected each day of lactation, could be highly associated with resilience, where resilience is the animal’s ability to maintain health and performance in the presence of environmental challenges such as pathogens, heat waves and nutritional changes. |
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Combining milking machine and accelerometer data to indicate the level of cow comfort on different milking machine settings. |
Increased data routinely collected by modern milking machine sensors and software has occurred together with increased cow attached sensor data, usually applied for fertility and health monitoring. To increase milking efficiency and gentle, quick and complete milking, it makes sense to investigate how various milking machine settings will impact on gentleness of milking through a proxy measurement of cow comfort during milking. |
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Milk composition and production efficiency within feed-to-yield systems on commercial dairy farms in Northern Ireland. |
The introduction of concentrates in the diet has contributed markedly to increasing milk production per cow and limiting the effect of the negative energy balance during the period when dry matter intake (DMI) is comparatively low. A wide range of concentrate feeding approaches are used including total mixed rations (TMR), or presenting the concentrate portion separately from the forage via in-parlour or out-of-parlour feeding systems, or a combination of these approaches. |
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Health-promoting phytonutrients are higher in grass-fed meat and milk. |
The controversy regarding animal products and human health and environmental concerns has not yet subsided, despite recent evidence which on the one hand shows that the relationship with cardiovascular disease, cancer and diabetes is largely inconclusive, and on the other hand environmental damage can be managed by production system management, such as regenerative management techniques. |
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Possibilities of using the continuous type of UV light on the surface of lor (whey) cheese: impacts on mould growth, oxidative stability, sensory and colour attributes during storage. |
Fresh whey cheeses are susceptible to the growth of mainly moulds and yeasts, due to their high moisture, protein and lactose contents, low salt concentration, and pH around 6.0. Even with good hygienic practices and effective cooling, they have limited shelf life. Thus, the investigation of post-production decontamination methods, preferably alternatives to thermal and chemical treatments, is required to ensure the safety and quality of whey cheeses during delivery and storage. |
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Effect of reproductive management programs that prioritized artificial insemination at detected estrus or timed artificial insemination on the reproductive performance of primiparous Holstein cows of different genetic merit for fertility. |
Genetics are inextricably linked to reproductive physiology and performance of dairy cows. In this context strong associations have been reported for genomic enhanced PTA for fertility and reproductive outcomes (PTA meaning the predicted difference of a parent animal’s offspring from the average, due to genes transmitted from that parent). |
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Protein modifications due to homogenisation and heat treatment of cow milk. |
Milk is a valuable source of nutrients in human nutrition, but the composition could be altered as a result of physical interventions. Due to safety requirements, shelf life and consumer preferences, milk is normally pasteurised, homogenised and sometimes spray dried. Homogenisation is done using pressure and heat, and this causes changes in the location of proteins in the milk as well as protein modifications which can affect nutritional characteristics. The intention of the study cited was to investigate these proteomic changes further and to what extend they are variable. |
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Microbial composition, rumen fermentation parameters, enteric methane emissions, and lactational performance of phenotypically high and low methane-emitting dairy cows |
Methane is a greenhouse gas which because of climate change expectations should be mitigated. Its production in the rumen also results in 4 to 12% loss in potential energy to the cow, and therefore mitigation may improve production performance, at least theoretically. There are several feeding and management strategies to exploit methane mitigation, and more recently genetic variability, which is the subject of this investigation, has also been explored. |
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Treatment of mild to moderate clinical bovine mastitis caused by gram-positive bacteria: A noninferiority randomized trial of local penicillin treatment alone or combined with systemic treatment. |
Mastitis worldwide is arguably the most important disease of dairy cattle and thus far only cured with antibiotic administration. With antimicrobial resistance (AMR) the focus has shifted to reduce antibiotic treatment with emphasis being put on optimization at herd level and treatment only through evidence-based cases. Currently, an accepted treatment is through a combination of local intra-udder and systemic treatment with penicillin in terms of the bacteriological cure of mild and moderate clinical mastitis cases caused by gram-positive organisms. |
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Diet, cardiovascular disease, and mortality in 80 countries. |
Globally, unhealthy diets have been recognised as a major cause of death and cardiovascular disease (CVD). Limitations to these reports include recommendations based on associations of individual foods, or nutrients or dietary patterns with CVD, and from studies conducted mostly in North America, Europe and East Asia, and otherwise numerous short-term randomized intervention trials of physiologic risk factors or clinical trials of dietary patterns on clinical outcomes. |