Title:	Progesterone profile and reproductive performance of estrous-induced, Alpine goats given hCG fire days after breeding.
Authors:	FONSECA, J. F. da TORRES, C. A. A. COSTA, E. P. MAFFILI, V. V. CARVALHO, G. R. ALVES, N. G. RUBERT, M. A.
Affiliation:	JEFERSON FERREIRA DA FONSECA, CNPC UNIVERSIDADE FEDERAL DE VIÇOSA UNIVERSIDADE FEDERAL DE VIÇOSA UNIVERSIDADE FEDERAL DE VIÇOSA UNIVERSIDADE FEDERAL DE VIÇOSA UNIVERSIDADE FEDERAL DE VIÇOSA UNIVERSIDADE FEDERAL DE VIÇOSA.
Date Issued:	2005
Citation:	Animal Reproduction, v. 2, n. 1, p. 55-59, jan./mar. 2005.
Description:	The objective of this study was to investigate lhe effect of hCG administration tive days after breed- ing on plasma progesterone concentration (P4) and reproductive performance of estrous-induced Alpine goats. A total of 42 lactating does were treated with intravaginal sponges (MAP, 60 mg) for 9 d plus 200 lU eCG and 22.5 mg d-cloprostenol 24 h before sponge removal. After detection of estrus (day of estrus = day 0) and breeding, females were randomly assigned into two treatments (T1 and T2). In T1 (n=19) and T2 (n=18) lhe animaIs received intramuscular injection of 1 ml of saline solution (control) or 250 lU hCG, respectively, 5 d after breeding. P4 (ng/ml) was recorded from blood sampled on days O, 5, 7, 13, 17, 21, 28 and 45 after breeding. Animals were scanned with lhe aid of transrectal ultra-sound (5 MHz probe) on days 35 and 70 after breeding, for diagnosis of pregnancy. P4 was higher in lhe hCG-treated than the control animaIs only at day 45 (P < 0.05). No effect of treatment on pregnancy and kidding rales, gestation period, prolificacy and fetal weight was recorded (P > 0.05). Results of this study suggest that hCG administration 5 d after breeding may alter the luteal function but not reproductive performance in estrous-induced lactating goats.
Thesagro:	Caprino Endocrinologia Progesterona Reprodução Animal Eficiência Reprodutiva
NAL Thesaurus:	Dairy goats Progesterone Reproductive performance Reproduction
Keywords:	Preformance reprodutiva hCG
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPC)