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Veterinary information to support practice, based on evidence and continuing education

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Abstract

Inbreeding depression is a growing concern in livestock because it can detrimentally affect animal fitness, health, and production levels. Genomic information can be used to more effectively capture variance in Mendelian sampling, thereby enabling more accurate estimation of inbreeding, but further ...

Author(s)
Baes, C. F.; Makanjuola, B. O.; Miglior, F.; Marras, G.; Howard, J. T.; Fleming, A.; Maltecca, C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 3, pp 2807-2817
Abstract

A survey was conducted to identify: (1) the number of dairy farms that train their heifers to the milking parlour prior to calving, (2) the reasons why farmers chose to train or not and (3) what training methods farmers use. The questionnaire was sent to 250 randomly selected dairy farmers within...

Author(s)
Sutherland, M.; White, T.; Chen, L.; Hempstead, M.; Huddart, F.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Proceedings of the New Zealand Society of Animal Production, 2018, 78, pp 177-182
Abstract

The objectives of the present study were to investigate phenotypic correlations of milk urea (MU) and efficiency of crude protein utilization (ECPU) with milk production and cow parameters in two contrasting herds. Between July 2016 and May 2017, 210 cows were milked twice daily with high...

Author(s)
Correa-Luna, M.; Lopez-Villalobos, N.; Almeida, G. A., Jr.; Donaghy, D. J.; Kemp, P. D.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Proceedings of the New Zealand Society of Animal Production, 2018, 78, pp 76-81
Abstract

Infertility and subfertility reduce the economic viability of dairy production. Inflammation reduces conception rates in dairy cattle, but surprisingly little information exists about the populations and the functions of immune cells at the conceptus-maternal interface during the periattachment...

Author(s)
Ott, T. L.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3766-3777
AbstractFull Text

This study was conducted to test the hypothesis that a combination of more frequently, but less accurately analysed milk components should give a more representative measure of a cow′s longer term milk composition than a DHIA sample taken once per month. Systematic biases with respect to stage of...

Author(s)
Lavon, Y.; Weller, J. I.; Ezra, E.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2017, No.21, pp 113-129
Abstract

The objective of this study was to estimate genetic parameters for lactation yields of milk (MY), fat (FY) and protein (PY) for cows milked either once- (OAD) or twice-a-day (TAD) at different production levels (PL), calculated as average milk solids yield (FY + PY) for dairy cattle in New Zealand. ...

Author(s)
Lembeye, F.; López-Villalobos, N.; Burke, J. L.; Davis, S. R.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Proceedings of the New Zealand Society of Animal Production, 2016, 76, pp 49-53
Abstract

The increasing lactational performance of dairy cows over the last few decades is closely related to higher nutritional requirements. The decrease in dry matter intake during the peripartal period results in a considerable mobilisation of body tissues (mainly fat reserves and muscle mass) to...

Author(s)
Gross, J. J.; Bruckmaier, R. M.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2019, 13, s1, pp s75-s81
Abstract

In most countries producing milk, industry- or other stakeholder-driven initiatives are in place to improve welfare and overall dairy farming sustainability. Those initiatives typically include a system of verification of reaching targets and progress over time. Reliable indicators are a...

Author(s)
Vasseur, E.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2017, 95, 3, pp 1365-1371
Abstract

Ruminant production systems are important contributors to anthropogenic methane (CH4) emissions, but there are large uncertainties in national and global livestock CH4 inventories. Sources of uncertainty in enteric CH4 emissions include animal inventories, feed dry matter intake (DMI), ingredient...

Author(s)
Hristov, A. N.; Kebreab, E.; Niu, M.; Oh, J.; Bannink, A.; Bayat, A. R.; Boland, T. M.; Brito, A. F.; Casper, D. P.; Crompton, L. A.; Dijkstra, J.; Eugène, M.; Garnsworthy, P. C.; Haque, N.; Hellwing, A. L. F.; Huhtanen, P.; Kreuzer, M.; Kuhla, B.; Yu, Z.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 7, pp 6655-6674
Abstract

Rumination development is vital during weaning, when kids are transitioning from a reliance on milk to hard feeds. This study analysed rumination behaviour prior to, and following, two weaning methods: abrupt milk removal, and dilution of milk with water; both are common weaning practices on farm....

Author(s)
Freeman, H. B. R.; Webster, J. R.; Zobel, G.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Proceedings of the New Zealand Society of Animal Production, 2017, 77, pp 161-163

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