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

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Abstract

Formulating diets conservatively for minimum crude-protein (CP) requirements and overfeeding nitrogen (N) is commonplace in grain finishing rations in USA, Canada and Australia. Overfeeding N is considered to be a low-cost and low-risk (to cattle production and health) strategy and is becoming more ...

Author(s)
Cowley, F.; Jennings, J.; Cole, A.; Beauchemin, K.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2019, 59, 11, pp 2082-2092
AbstractFull Text

Author(s)
Bakker, M. L.; Ferragine, M. D. C.
Publisher
Asociación Argentina de Producción Animal, Balcarce, Argentina
Citation
Revista Argentina de Producción Animal, 2018, 38, Suplemento 1, pp 184
AbstractFull Text

Puberty can be characterized by the time when the cattle first estrus. Estrus in cattle can be observed through the cytology of the vaginal epithelial (Vaginal smear). The vaginal wall cytology of Brahman cattle predicted at the onset of puberty was studied. Brahman cattles were developed by...

Author(s)
Amrullah, A. H. K.; Widayati, D. T.; Maharani, D.
Publisher
Association of Agricultural Technology in Southeast Asia (AATSEA), Ladkrabang, Thailand
Citation
International Journal of Agricultural Technology, 2018, 14, 7 Special Issue, pp 997-1002
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

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

In livestock industries, one sex is usually preferred because of the impact on the production (e.g. milk from cows, eggs from laying hens). Furthermore, in pig production, the male-specific boar taint is a big hurdle for consumer acceptance. Consequently, a shift in the ratio towards the desired...

Author(s)
Kurtz, S.; Petersen, B.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 137, pp 67-74
Abstract

Multivariate genetic evaluation in modern dairy cattle breeding programs became important in the last decades. The simultaneous estimation of all production and functional traits is still demanding. Different meta-models are used to overcome several constraints. The aim of this study was to conduct ...

Author(s)
Pfeiffer, C.; Fuerst-Waltl, B.; Fuerst, C.
Publisher
Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Croatia
Citation
Poljoprivreda / Agriculture, 2015, 21, 1, Suppl., pp 37-40
Abstract

Methane measurements from cattle would benefit from an improved capability to measure a larger number of animals, with a lower requirement for specialist technical knowledge, and minimal human interference. The GreenFeed (GF) system (C-Lock Inc., Rapid City, SD, USA) estimates daily methane...

Author(s)
Hammond, K. J.; Waghorn, G. C.; Hegarty, R. S.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2016, 56, 2/3, pp 181-189
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

Recent interest in increasing rates of body weight gain in heifer calves before weaning is based on the promise of an increase in milk production during first lactation. This increase is usually realized by increasing milk or milk replacer intake, delaying the onset of rumen development....

Author(s)
Gerrits, W. J. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3684-3691

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