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| ARRAIS, A. M.; MELLO, M. R. B.; CORTÊS, L. R.; BONATO, G. C.; OLIVEIRA, T. A.; CARVALHO, B. P.; FONSECA, J. F. da. |
| Cervical relaxation with association of estradiol benzoate, cloprostenol and oxytocin allows a cervical transposition and embryo collection in sheep by the non-surgical method (Fonseca et al., Theriogenology, 86: 144-151, 2016). However, in recipients, the use of this protocol becomes impracticable due to the use of cloprostenol, which is a luteolytic agent. Sheep are known to form accessory luteal bodies after hCG administration seven days after the onset of estrus (Castro et al., Anim. Reprod., 12: 148, 2015). Therefore, the objective of this study was to develop a cervical relaxation protocol in embryo recipient ewes without compromising future gestation. The data were presented in a descriptive way. Thirteen ewes were observed in estrus out of 24... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: HCG; Embryo collection; Drug effects; Relaxamento cervical; Oestrogens; Estradiol; Ovino; Reprodução Animal; Transferência de Embrião; Sheep; Ewes; Animal reproduction; Benzoates; Estrus; Cloprostenol; Oxytocin receptors; Embryo transfer; Body weight. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095117 |
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| DIAS, J. H.; CORTÊS, L. R.; BRANDÃO, F. Z.; BONATO, G. C.; SOUZA-FABJAN, J. M. G.; ARRAIS, A. M.; OLIVEIRA, T. A.; MARTINS, B. B.; FACO, O.; FONSECA, J. F. da. |
| Pregnancy establishing after artificial insemination (AI) in goats depends on many important aspects, including time of AI, ovulation and premature luteal regression. The knowledge of ovulation in relation to estrus onset, ovulation induction and strategies to prevent PLR can be valuable tools to increase pregnancy rate. This study tested the effect of hCG administration on pregnancy rate in artificially inseminated dairy cyclic goats after estrus synchronization Results of this study showed that hCG administration associated to AI significantly increased pregnancy rates in goats after estrus synchronization with dcloprostenol, which can be a valuable and promising tool to be applied in field conditions. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: HCG; Dairy goats; Animal reproduction; Ovulation; Estrus; Artificial insemination; Pregnancy rate; Estrus synchronization; Cloprostenol. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095120 |
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| BONATO, C. G.; SOUZA-FABJAN, J. M. G.; CÔRTES, L. R.; OLIVEIRA, T. A.; ARRAIS, E. M.; MAIA, A. L. R. S.; PRATES, J. F.; VEIGA, M. O.; FONSECA, J. F. da. |
| The present study evaluated the efficacy of two protocols for estrus synchronization with different intervals in order to use them in artificial insemination (AI) in Saanen and Alpine multiparous goats in June (end of the natural mating season). The animals were allocated into two groups, according to breeding, parity, and body condition score to receive two doses of 37.5 ?g d-cloprostenol (Prolise®, ARSA SRL, Buenos Aires, Argentina) latero-vulvar 7.5 (n=23) and 11.5 (n=25) days. No animal became pregnant after NM. In AI animals, conception rate was 69.2% (9/13) for T7.5 and 70.6% (12/17) for T11.5 (P> 0.05). Even at the end of the breeding season, the protocols were able to synchronize a significant percentage of animals in a short window of time,... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Caprino; Reprodução Animal; Inseminação Artificial; Sincronização do Cio; Período de Gestação; Prenhez; Dairy goats; Animal reproduction; Artificial insemination; Estrus synchronization; Conception rate; Gestation period. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095124 |
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