Data/hora: 11/06/2024 19:28:16

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 25/03/2008
Data da última atualização: | 24/09/2019
Autoria: | FONSECA, J. F. da; TORRES, C. A. C.; SANTOS, A. D. F.; MAFFILI, V. V.; AMORIM, L. S.; MORAES, E. A.
Afiliação: | Jeferson Ferreira da Fonseca, Embrapa Caprinos (CNPC); C. A. A. Torres, Universidade Federal de Viçosa (UFV); A. D. F. Santos, Universidade Federal de Viçosa (UFV); V. V. Maffili, Universidade Federal de Viçosa (UFV); L. S. Amorim, Universidade Federal de Viçosa (UFV); E. A. Moraes, Universidade Federal de Viçosa (UFV).
Título: | Progesterone and behavioral features when estrous is induced in Alpine goats.
Ano de publicação: | 2008
Fonte/Imprenta: | Animal Reproduction Science, v. 103, n. 3/4, p. 366-373, Jan., 2008.
DOI: | 10.1016/j.anireprosci.2007.05.013
Idioma: | Inglês
Conteúdo: | Abstract: The objective of the present study was to evaluate the endocrine and behavioral features of estrous-induced Alpine goats. A total;of 36 nulliparous, 40 non-lactating and 42 lactating does were treated with. intravaginal: 60 mg medroxyprogesterone acetate sponges for 9 d plus 200 IU eCG and 22.5 mu g d-cloprostenol 24 h before sponge removal. Plasma progesterone concentration, was. analyzed from blood sampled on days 0, (sponge insertion), 5, 8. (cloprostenol administration) and 9 (sponge removal): in 11 nulliparous, 13 non-lactating and 11 lactating does. Estrous response did not differ (P > 0.05) among nulliparous (97.2%), non-lactating (90.00%) and lactating does (85.7%). Interval to estrus and duration of estrus did not differ (P > 0.05),among nulliparous (2218 +/- 9.9 and 25.6 +/- 6.8 h), non-lactating (217 +/- 15.8 and 25.0 +/- 6.0 h) and lactating does (22.2 +/- 10.4 and 24.9 +/- 4.2 h). The accumulative percentage of does in: estrus during the first 36 h after sponge removal was 88. 1%. The correlation between interval to estrus and duration of estrus was r = -032 (P < 0.001) Endogenous progesterone production is decreased until day 8 or suppressed by MAP on day 9. Conception rate was greater (P < 0.01):in lactating (77.8%) than non-lactating, (44.4%) but similar (P > 0.05) to nulliparous (60.0%) goats. Estrus can:be efficiently induced:by means of hormonal treatment in goats and acceptable fertility can be obtained regardless of animal: category. (c) 2007 Elsevier B.V. All rights reserved.
Palavras-Chave: | ECG; Estrous synchronization; Induction; Intravaginal sponges; Progestagen; Progestagens; Raça Alpina.
Thesagro: | Caprino; Ciclo Estral; Endocrinologia; Progesterona; Prostaglandina; Reprodução Animal; Sincronização do Cio.
Thesaurus Nal: | Acetates; Artificial insemination; Conception; Dairy goats; Estrus synchronization; Progesterone.
Categoria do assunto: | --
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (20784-1) - UPC - PC - DD -  -  -  - DIS