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Abstract

The objectives of this study were to evaluate the effect of administering 500 mg of recombinant bovine somatotropin (bST) every 10 d on ovulatory responses, estrous behavior, and fertility of lactating Holstein cows. Lactating dairy cows were assigned to 1 of 2 treatments: a control with no...

Author(s)
Rivera, F.; Narciso, C.; Oliveira, R.; Cerri, R. L. A.; Correa-Calderón, A.; Chebel, R. C.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2010, 93, 4, pp 1500-1510
Abstract

Objectives were to evaluate the effects of differing progesterone concentrations during follicle development on follicular dynamics, fertilization, and embryo quality. Lactating Holstein cows (n=154) were assigned randomly to 1 of 2 treatments. Cows underwent a presynchronization of the estrous...

Author(s)
Cerri, R. L. A.; Chebel, R. C.; Rivera, F.; Narciso, C. D.; Oliveira, R. A.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2011, 94, 7, pp 3342-3351