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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

The objective was to compare pregnancy rates and pregnancy losses in lactating dairy cows that were diagnosed not pregnant and re-inseminated following either the Ovsynch® or Heatsynch protocols. Also evaluated were the effects of stages of the estrous cycle, ovarian cysts and anestrus on pregnancy ...

Author(s)
Bartolome, J. A.; Silvestre, F. T.; Kamimura, S.; Arteche, A. C. M.; Melendez, P.; Kelbert, D.; McHale, J.; Swift, K.; Archbald, L. F.; Thatcher, W. W.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2005, 63, 6, pp 1617-1627
Abstract

Pregnancy rates were compared in lactating dairy cows (n=1083) assigned to protocols for resynchronization of ovulation based on stages of the estrous cycle, or presence of ovarian cysts or anestrus. Cows were detected not pregnant by ultrasonography 30 d after a previous AI (study day 0) and...

Author(s)
Bartolome, J. A.; Sozzi, A.; McHale, J.; Melendez, P.; Arteche, A. C. M.; Silvestre, F. T.; Kelbert, D.; Swift, K.; Archbald, L. F.; Thatcher, W. W.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2005, 63, 6, pp 1628-1642
Abstract

Holstein cows received, subcutaneously 1 (1DESL, n=15) or 2 (2DESL, n=12) degradable implant containing 2.1 mg of the GnRH agonist Deslorelin or no implant (CON, n=18) within 1.5 days postpartum (dpp). Previous pregnant (PPH) and non-pregnant (PNPH) uterine horns were determined by palpation per...

Author(s)
Silvestre, F. T.; Risco, C. A.; Lopez, M.; Sá, M. J. S. de; Bilby, T. R.; Thatcher, W. W.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 116, 3/4, pp 196-212