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Abstract

We performed genome-wide association analyses for milk, fat, and protein yields and somatic cell score based on lactation stages in the first 3 parities of Canadian Ayrshire, Holstein, and Jersey cattle. The genome-wide association analyses were performed considering 3 different lactation stages...

Author(s)
Oliveira, H. R.; Cant, J. P.; Brito, L. F.; Feitosa, F. L. B.; Chud, T. C. S.; Fonseca, P. A. S.; Jamrozik, J.; Silva, F. F.; Lourenco, D. A. L.; Schenkel, F. S.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 9, pp 8159-8174
Abstract

Skin lesions are commonly seen in dairy herds and have been associated with animal-, environmental-, and management factors. These lesions are not only a welfare concern, but they also affect profitability. Three areas on the cattle were examined for skin lesions: the hock, knee, and neck. Previous ...

Author(s)
Jewell, M. T.; Cameron, M.; Spears, J.; McKenna, S. L.; Cockram, M. S.; Sanchez, J.; Keefe, G. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3376-3391
Abstract

Mycobacterium avium subsp. paratuberculosis (MAP) is the causative bacterium of Johne's disease (JD) in ruminants. The control of JD in the dairy industry is challenging, but can be improved with a better understanding of the diversity and distribution of MAP subtypes. Previously established...

Author(s)
Ahlstrom, C.; Barkema, H. W.; Stevenson, K.; Zadoks, R. N.; Biek, R.; Kao, R.; Trewby, H.; Haupstein, D.; Kelton, D. F.; Fecteau, G.; Labrecque, O.; Keefe, G. P.; McKenna, S. L. B.; Tahlan, K.; Buck, J. de
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2016, 11, 2, pp e0149017
Abstract

Lactation persistency (LP), defined as the rate of declining milk yield after milk peak, is an economically important trait for dairy cattle. Improving LP is considered a good alternative method for increasing overall milk production because it does not cause the negative energy balance and other...

Author(s)
Do, D. N.; Bissonnette, N.; Lacasse, P.; Miglior, F.; Sargolzaei, M.; Zhao, X.; Ibeagha-Awemu, E. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 3, pp 1955-1970
Abstract

Feed efficiency in dairy cattle has gained much attention recently. Due to the cost-prohibitive measurement of individual feed intakes, combining data from multiple countries is often necessary to ensure an adequate reference population. It may then be essential to model genetic heterogeneity when...

Author(s)
Yao, C.; Campos, G. de los; VandeHaar, M. J.; Spurlock, D. M.; Armentano, L. E.; Coffey, M.; Haas, Y. de; Veerkamp, R. F.; Staples, C. R.; Connor, E. E.; Wang, Z.; Hanigan, M. D.; Tempelman, R. J.; Weigel, K. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 3, pp 2007-2016
Abstract

Caustic paste disbudding is becoming more commonplace in North America. A large body of work has examined pain control for cautery disbudding and surgical dehorning, but fewer studies have evaluated pain control for caustic paste disbudding, and results conflict regarding benefits of local...

Author(s)
Winder, C. B.; LeBlanc, S. J.; Haley, D. B.; Lissemore, K. D.; Godkin, M. A.; Duffield, T. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 8, pp 6429-6441
Abstract

Morbidity, mortality, and antimicrobial use and resistance are major concerns in the rearing of male dairy calves, so information to support disease prevention is important. The objective of this cross-sectional study was to describe management practices associated with the care of male calves...

Author(s)
Renaud, D. L.; Duffield, T. F.; LeBlanc, S. J.; Haley, D. B.; Kelton, D. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 8, pp 6862-6871
Abstract

Several studies have investigated which management practices have the greatest effect on udder health, but little information is available on how broadly the recommended milking practices are adopted across Canada. The National Dairy Study 2015 was designed to gather dairy cattle health and...

Author(s)
Belage, E.; Dufour, S.; Bauman, C.; Jones-Bitton, A.; Kelton, D. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 5, pp 3839-3849
Abstract

There is currently no gold standard method for the diagnosis of bovine respiratory disease (BRD) complex in Holstein pre-weaned dairy calves. Systematic thoracic ultrasonography (TUS) has been used as a proxy for BRD, but cannot be directly used by producers. The Wisconsin calf respiratory scoring...

Author(s)
Buczinski, S.; Ollivett, T. L.; Dendukuri, N.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Preventive Veterinary Medicine, 2015, 119, 3/4, pp 227-231
Abstract

Feed represents a large proportion of the variable costs in dairy production systems. The omission of feed intake measures explicitly from national dairy cow breeding objectives is predominantly due to a lack of information from which to make selection decisions. However, individual cow feed intake ...

Author(s)
Berry, D. P.; Coffey, M. P.; Pryce, J. E.; Haas, Y. de; Løvendahl, P.; Krattenmacher, N.; Crowley, J. J.; Wang, Z.; Spurlock, D.; Weigel, K.; Macdonald, K.; Veerkamp, R. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 6, pp 3894-3905

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