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Animal Science Database

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Abstract

Greater metabolic demands in high-producing dairy cows are believed to be a cause of sub-fertility in these animals. Previously, supplementation with vitamin B complex molecules has shown benefits in improving milk production, health, and reproductive efficiency of dairy cows. The primary aim of...

Author(s)
Kaur, M.; Hartling, I.; Burnett, T. A.; Polsky, L. B.; Donnan, C. R.; Leclerc, H.; Veira, D.; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1642-1657
Abstract

The objective of this study was to examine the association between increased physical activity at the moment of timed artificial insemination (AI), detected by an automated activity monitor (AAM), and fertility outcomes. This paper also investigated factors affecting estrous expression in general....

Author(s)
Madureira, A. M. L.; Polsky, L. B.; Burnett, T. A.; Silper, B. F.; Soriano, S.; Sica, A. F.; Pohler, K. G.; Vasconcelos, J. L. M.; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3598-3608
Abstract

Reduced conception rate (CR) during the hot summer and subsequent autumn is a well-documented phenomenon. Intensive use of cooling systems can improve summer and autumn reproductive performance, but is unable to increase CR to winter and spring levels. We examined whether combined hormonal...

Author(s)
Friedman, E.; Voet, H.; Reznikov, D.; Wolfenson, D.; Roth, Z.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 12, pp 7465-7475
Abstract

The objectives were to evaluate the effects of source of fatty acids (FA) on embryo quality of dairy cows. A total of 154 Holstein cows were assigned randomly to 1 of 2 sources of FA supplemented at 2% of the dietary dry matter as calcium salts of either palm oil (PO) or linoleic and ...

Author(s)
Cerri, R. L. A.; Juchem, S. O.; Chebel, R. C.; Rutigliano, H. M.; Bruno, R. G. S.; Galvão, K. N.; Thatcher, W. W.; Santos, J. E. P.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2009, 92, 4, pp 1520-1531
Abstract

Two experiments evaluated milk production, serum progesterone and insulin, and reproductive performance of lactating Holstein cows receiving or not receiving Ca salts of polyunsaturated fatty acids (PUFA), or receiving Ca salts of PUFA at different daily frequencies. In experiment 1, 1,125 cows...

Author(s)
Reis, M. M.; Cooke, R. F.; Ranches, J.; Vasconcelos, J. L. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 12, pp 7039-7050
Abstract

The objectives were to evaluate the effects of differential timing of supplementation of different Ca salts (CS) of fatty acids (FA) on FA profiles of cotyledonary-caruncular tissues, metabolic status, uterine health, pregnancy, pregnancy losses after 2 artificial inseminations (AI), and milk...

Author(s)
Silvestre, F. T.; Carvalho, T. S. M.; Francisco, N.; Santos, J. E. P.; Staples, C. R.; Jenkins, T. C.; Thatcher, W. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2011, 94, 1, pp 189-204
Abstract

AHLSCHWEDE, W. T., and ROBISON, O. W. Influence of climatic conditions on litter size in swine: 916.
ALGEO, J. W., and GASSNER, F. X. Effect of poly-diethylstilbestrol phosphate (PSP) injected sub-cutaneously on the growth of beef cattle. I. Suckling and weanling calves: 896.
ALGEO, J. W., and...

Citation
Journal of Animal Science, 1966, 25, pp 877-933
Abstract

AKINS, E. L., LTJDWICK, T. M., RICKARD, H. E., RADER, E. R., and ETGEN, W. M. Association of certain type evaluations and type scores of first-lactation Holstein females: 748. ALMQTJIST, J. O., AMANN, R. P., and O'DELL, W. T. Sperm reserves of dairy bulls as determined by depletion trials and...

Citation
Journal of Dairy Science, 1958, 41, pp 701-751
Abstract

BEARDEN, H. J. The effect of some winter management practices and herd size on the 60- to 90-day nonreturns in artificial breeding: 638. BECKER, R. B., and ARNOLD, P. T. D. Tenure of dairy bulls in artificial service: 622. BIALY, G., and SMITH, V. R. Rapid rates for freezing bull semen: 622. BOYD., ...

Citation
Journal of Dairy Science, 1957, 40, pp 597-638
Abstract

ACKERMAN, R. A., and HYATT, G. (Jr. ). Prepartum II. Some effects on production of cows and growth of calves: 503. ALBRECTSEN, R. Production results of three generations of artificial breeding and of the use of analysed sires: 513-514. ALMQUIST, J. O., and THACKER, D. L. The fertility of bovine...

Citation
Journal of Dairy Science, 1951, 34, pp 475-514

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