Estrus and fertility of anestrous Anglo-Nubian goats submitted to different synchronous protocols and given hCG five days after artificial insemination.

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The objective of this study was to check the efficiency of estrous induction with 6, 9 and 12 days progestagen protocols and hCG administration five days after timed artificial insemination (TAI) on fertility in anestrous Anglo-Nubian goats. Only animals with estrus up to 48 h after sponge removal were considered, which explain the low estrous response in the present study. Animals in estrus after 48 h were not considered because they were not adequate to TAI. Time of exposure to progestagen did not affect the efficiency of estrous induction and fertility in goats. Future studies should consider administration of hCG for increasing fertility after TAI in goats.
Título em português: Estro e fertilidade de cabras Anglo-Nubianas em anestro estacional submetidas a diferentes protocolos de indução de estro sincronizado e administração de hCG cinco dias após a inseminação artificial .

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Raça Anglo-Nubiana, hCG, Sincronização, Estro, Anestro, Progestogens, Caprino, Fertilidade, Indução, Inseminação Artificial, Reprodução Animal, Animal fertility, Goats, Brazil, Artificial insemination, Estrus synchronization, Reproduction

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