The effect of using hCG in recipient goats: preliminary results.
2024
NEVES, E. R. P. | CÔRTES, L. R. | BATISTA, R. I. T. P. | RODRIGUES, M. G. K. R. | ARAUJO, M. C. C. | FONSECA, J. F. DA | ISABELA REZENDE PEDROSA NEVES, UNIVERSIDADE SALGADO DE OLIVEIRA; LUANA RANGEL CÔRTES, UNIVERSIDADE FEDERAL DE VIÇOSA; RIBRIO IVAN TAVARES PEREIRA BATISTA, UNIVERSIDADE FEDERAL FLUMINENSE; MARIANA GARCIA KAKO RODRIGUES, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; MANOEL CARLOS COUTO ARAUJO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; JEFERSON FERREIRA DA FONSECA, CNPC.
This study checked the effect of hCG on pregnancy rate of recipient goats. Multiparous acyclic dairy goats (Alpine/Saanen) from second to third parity order (n=40) were subjected to synchronous estrus induction by use of intravaginal sponges (60 mg of medroxyprogesterone acetate; Progespon®, Zoetis, São Paulo, Brazil) for six days plus 200 IU of equine chorionic gonadotropin (eCG; Sincro-eCG 6000®; Ouro Fino, Cravinhos, Brazil) and 131.5 μg of cloprostenol (Sincrocio®, Ouro Fino, Cravinhos, Brazil) i.m. 24 h before sponge removal. Estrus was monitored twice daily with fertile males (D0 = Day of onset of estrus). Overall pregnancy rate was 63.0% (17/27), being 58.3% (7/12) and 66.7% (10/15) for G-Control and G-hCG, respectively (P > 0.05). Preliminary results showed an interesting pregnancy rate obtained by non-surgical technique while hCG positive effect remained to be checked in large trials in dairy goats.
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