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Abstract

The objectives of the current study were to investigate the efficacy of PGF as a therapy to reduce the prevalence of subclinical endometritis and improve pregnancy per artificial insemination (P/AI) in cows subjected to a timed artificial insemination (AI) program. A total of 1,342 lactating...

Author(s)
Lima, F. S.; Bisinotto, R. S.; Ribeiro, E. S.; Greco, L. F.; Ayres, H.; Favoreto, M. G.; Carvalho, M. R.; Galvão, K. N.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2013, 96, 10, pp 6480-6488
Abstract

The objectives of this study were to determine the effect of supplemental progesterone on fertility in lactating dairy cows lacking a corpus luteum (CL) at the initiation of the timed artificial insemination (AI) program. Holstein cows were subjected to the 5-d timed AI program (d -8 GnRH, d -3 and ...

Author(s)
Bisinotto, R. S.; Ribeiro, E. S.; Lima, F. S.; Martinez, N.; Greco, L. F.; Barbosa, L. F. S. P.; Bueno, P. P.; Scagion, L. F. S.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2013, 96, 4, pp 2214-2225
Abstract

The objectives were to compare development and transcriptome of preimplantation conceptuses 15 d after synchronized ovulation and artificial insemination (AI) according to the genetic background of the cow and estrous cyclicity at the initiation of the synchronization program. On d 39±3 postpartum, ...

Author(s)
Ribeiro, E. S.; Monteiro, A. P. A.; Bisinotto, R. S.; Lima, F. S.; Greco, L. F.; Ealy, A. D.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 6, pp 4761-4777
Abstract

The objectives were to determine the effects of one or three timed artificial insemination (AI) before natural service (NS) in lactating dairy cows not observed for detection of estrus on hazard of pregnancy, days nonpregnant, and 21-days cycle pregnancy rate. A total of 1050 lactating Holstein...

Author(s)
Lima, F. S.; Bisinotto, R. S.; Ribeiro, E. S.; Ayres, H.; Greco, L. F.; Galvão, K. N.; Risco, C. A.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2012, 77, 9, pp 1918-1927
Abstract

Two experiments evaluated the effects of the first GnRH injection of the 5-d timed artificial insemination (AI) program on ovarian responses and pregnancy per AI (P/AI), and the effect of timing of the final GnRH to induce ovulation relative to AI on P/AI. In experiment 1, 605 Holstein heifers were ...

Author(s)
Lima, F. S.; Ayres, H.; Favoreto, M. G.; Bisinotto, R. S.; Greco, L. F.; Ribeiro, E. S.; Baruselli, P. S.; Risco, C. A.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2011, 94, 10, pp 4997-5004
Abstract

The objectives were to compare the effects of 2 methods of presynchronization and 2 lengths of proestrus on fertility of grazing dairy cows subjected to a 5-d timed artificial insemination (AI) protocol at initiation of breeding season. Lactating dairy cows (n=1,754) from 3 seasonal grazing farms...

Author(s)
Ribeiro, E. S.; Monteiro, A. P. A.; Lima, F. S.; Ayres, H.; Bisinotto, R. S.; Favoreto, M.; Greco, L. F.; Marsola, R. S.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 5, pp 2513-2522
Abstract

Objectives were to investigate 2 intervals from induction of ovulation to artificial insemination (AI) and the effect of supplemental progesterone for resynchronization on fertility of lactating dairy cows subjected to a 5-d timed AI program. In experiment 1, 1,227 Holstein cows had their estrous...

Author(s)
Bisinotto, R. S.; Ribeiro, E. S.; Martins, L. T.; Marsola, R. S.; Greco, L. F.; Favoreto, M. G.; Risco, C. A.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2010, 93, 12, pp 5798-5808
Abstract

The objectives were to evaluate pregnancy per AI (P/AI) of dairy cows subjected to the 5-day timed AI protocol under various synchronization and luteolytic treatments. Cows were either presynchronized or received supplemental progesterone during the synchronization protocol, and received a double...

Author(s)
Ribeiro, E. S.; Bisinotto, R. S.; Favoreto, M. G.; Martins, L. T.; Cerri, R. L. A.; Silvestre, F. T.; Greco, L. F.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2012, 78, 2, pp 273-284
Abstract

Objectives were to compare the effect of presynchronization and resynchronization methods on fertility responses of grazing dairy cows at first and second artificial insemination (AI) and pregnancy rate during the entire breeding season. Lactating dairy cows (n=1,263) in 2 seasonal grazing farms...

Author(s)
Ribeiro, E. S.; Cerri, R. L. A.; Bisinotto, R. S.; Lima, F. S.; Silvestre, F. T.; Greco, L. F.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2011, 94, 10, pp 4984-4996
Abstract

The objective was to evaluate the effect of supplementation of essential fatty acids (FA), primarily linoleic acid, to prepartum cows during the last 2 mo of pregnancy and to their subsequent heifers, during the preweaning period on the productive and reproductive responses of heifers for their...

Author(s)
Garcia, M.; Greco, L. F.; Block, E.; Santos, J. E. P.; Thatcher, W. W.; Staples, C. R.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Feed Science and Technology, 2016, 222, pp 64-74

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