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Abstract

The objective was to evaluate the association between changes in daily rumination time (dRT) and early stages of disease during early lactation and to assess the performance of two proposed disease detection indices. This cohort study included 210 multiparous Holstein cows at the University of...

Author(s)
Paudyal, S.; Maunsell, F. P.; Richeson, J. T.; Risco, C. A.; Donovan, D. A.; Pinedo, P. J.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, 7, pp 1484-1492
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

Our objective was to evaluate the effect of season of calving, associated with variable levels of heat stress, on the dynamics of rumination during the prepartum period and early lactation of cows that were healthy or affected by peripartal health disorders. Three weeks before the estimated due...

Author(s)
Paudyal, S.; Maunsell, F.; Richeson, J.; Risco, C.; Donovan, A.; Pinedo, P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 11, pp 9057-9068
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

The objective of this study was to estimate genetic parameters for dry matter intake (DMI) in prepartum nonlactating and in lactating Holstein cows. Measurements were recorded on cows from Iowa State University (ISU) and the University of Florida (UF) dairy herds. Individual feed intake data were...

Author(s)
Shonka, B. N.; Tao, S.; Dahl, G. E.; Spurlock, D. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2015, 98, 11, pp 8195-8200
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

The objective of this retrospective observational cohort study, combined with simulation, was to evaluate the effect of extending the voluntary waiting period (VWP) during the summer on profitability on a Florida dairy farm. Data from Holstein cows (n=1,416) that calved between June and September...

Author(s)
Gobikrushanth, M.; Vries, A. de; Santos, J. E. P.; Risco, C. A.; Galvão, K. N.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 7, pp 4236-4246
Abstract

The objective was to determine factors controlling seasonal variation in 90-day non-return rate to first service (90-day NRR) including effects of location, milk yield, and weather variables on specific days before and after breeding. Dairy Herd Improvement Association records on first services...

Author(s)
Al-Katanani, Y. M.; Webb, D. W.; Hansen, P. J.
Citation
Journal of Dairy Science, 1999, 82, 12, pp 2611-2616
Abstract

FLORIDA, 1938-39.-The diseases diagnosed in the Veterinary Laboratory are listed, ICTEROHAEMOGLO-BINURIA (RED WATER DISEASE) being observed in Florida for the first time. The calcium requirements of cattle and the effects of cobalt- and copper-deficient diets, as well as the effects of an excess of ...

Citation
Extracts from Annual Reports of Agricultural Experiment Stations, U.S.A.,

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