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Administration of HCG seven days after estrous onset increases the pregnancy rate in Toggenburg goats subjected to induction of synchronized estrus and natural mating. Repositório Alice
CORTÊS, L. R.; FRAGA, M. O.; SILVA, D. S.; PRATES, J. F.; MARTINS, B. B.; FIGUEIRA, L. M.; BONATO, G. C.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BRANDÃO, F. Z.; FONSECA, J. F. da.
The dominant follicle reaches its maximum diameter on the sixth day after ovulation or seven days after the onset of estrus (Castro et al., Theriogenology, 52: 399-411, 1999). This study investigated the effect of hCG administration on the seventh day after the onset of estrus (D7) on pregnancy rate in Toggenburg goats. The study was conducted during December and January in Piau, MG, Brazil (latitude 21°35?S and longitude 43°15?W). For statistical analysis, the chi-square test was used with a significance level of 5%. The pregnancy rate of the animals receiving hCG was superior (P=0.047) than those receiving saline [90.7% (39/43) and 74.4% (32/43)]. We conclude that the use of hCG seven days after hormonally induced-estrus is an efficient strategy to...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Sheep; Ewes; Animal reproduction.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095118
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Intravaginal hCG administration increases pregnancy rate in artificially inseminated cyclic dairy goats subjected to estrous synchronization. Repositório Alice
CORTÊS, L. S.; FRAGA, M. O.; SILVA, D. S.; PRATES, J. F.; MARTINS, B. B.; FIGUEIRA, L. M.; BONATO, G. C.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BRANDÃO, F. Z.; 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: Resumo em anais de congresso (ALICE) 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
Registros recuperados: 2
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