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Abstract

Environmental influences during different stages of pregnancy can induce lifelong changes in the structure, physiology, and metabolism of the offspring. Our hypothesis was that season of conception (when the offspring was conceived), associated with heat stress conditions at conception and during...

Author(s)
Pinedo, P. J.; Vries, A. de
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 8, pp 6631-6639
Abstract

The fertility of lactating Holstein cows is severely reduced during periods of heat stress. Despite this reduction in fertility, however, some inseminations conducted during heat stress result in successful pregnancies from which heifer calves are born. Many of these heifer calves are retained and...

Author(s)
Brown, B. M.; Stallings, J. W.; Clay, J. S.; Rhoads, M. L.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2016, 11, 2, pp e0148234
Abstract

Heat stress at the time of conception affects the subsequent milk production of primiparous Holstein cows; however, it is unknown whether these effects are maintained across multiple lactations. Therefore, the objective of the current study was to examine the relationship between periconceptional...

Author(s)
Brown, B. M.; Stallings, J. W.; Clay, J. S.; Rhoads, M. L.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2015, 10, 10, pp e0133574
Abstract

We evaluated the effect of shortening the dry period (DP) on milk and energy-corrected milk (ECM) yields, milk components, colostrum quality, metabolic status, and reproductive parameters. Primiparous (n=372) and multiparous (n=400) Israeli Holstein cows from 5 commercial dairy herds were subjected ...

Author(s)
Shoshani, E.; Rozen, S.; Doekes, J. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 5, pp 2909-2922
Abstract

Heat stress during the dry period reduces milk yield in the subsequent lactation of dairy cows. Our objectives were to quantify the economic losses due to heat stress if dry cows are not cooled and to evaluate the economic feasibility of dry cow cooling. We used weather data from the National...

Author(s)
Ferreira, F. C.; Gennari, R. S.; Dahl, G. E.; Vries, A. de
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 12, pp 9931-9941
Abstract

Rapid detection of dairy cow mastitis is important so corrective action can be taken as soon as possible. Automatically collected sensor data used to monitor the performance and the health state of the cow could be useful for rapid detection of mastitis while reducing the labor needs for...

Author(s)
Jensen, D. B.; Hogeveen, H.; Vries, A. de
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 9, pp 7344-7361
Abstract

The establishment and maintenance of pregnancy in lactating dairy cows is a complex biological event that is influenced by a multitude of factors, from the reproductive biology of the cow to managerial aspects of the dairy farm. It is often mentioned in the scientific literature that fertility in...

Author(s)
Santos, J. E. P.; Bisinotto, R. S.; Ribeiro, E. S.; Lima, F. S.; Greco, L. F.; Staples, C. R.; Thatcher, W. W.
Publisher
Nottingham University Press, Nottingham, UK
Citation
Reproduction in domestic ruminants VII. Proceedings of the Eighth International Symposium on Reproduction in Domestic Ruminants, Anchorage, Alaska, September 2010, 2010, pp 387-403
Abstract

The objective of this study was to investigate the association between mastitis events occurring during the previous lactation, the dry period, and the peripartum period on the incidence of early lactation mastitis in cows receiving ceftiofur hydrochloride or penicillin dihydrostreptomycin as...

Author(s)
Pinedo, P. J.; Fleming, C.; Risco, C. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 12, pp 7015-7026
Abstract

The objective of this study was to determine risk factors for udder edema (case-control study) and to evaluate the association of udder edema in primiparous Holstein cows with their lactation performance (cohort study). Values for the first 10 test day for milk yield, fat, protein, and somatic cell ...

Author(s)
Melendez, P.; Hofer, C. C.; Donovan, G. A.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Preventive Veterinary Medicine, 2006, 76, 3/4, pp 211-221
Abstract

Body condition score (BCS) is a practical tool used to monitor energy nutrition of dairy cattle. Body condition score at calving has been associated with lactational performance; however, little information is available about cows calving with low, optimum or high BCS that either maintain, gain or...

Author(s)
Cows, M. P. I. H.; Melendez, P.; Paz, J. de la; Donovan, G. A.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Proceedings of the Fortieth Annual Conference, American Association of Bovine Practitioners, Vancouver, British Columbia, Canada, 20-22 September, 2007, 2007, pp 219

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