Data/hora: 22/06/2024 02:10:02

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 17/09/2013
Data da última atualização: | 15/04/2015
Autoria: | PIETROSKI, A. C. C. A.; BRANDÃO, F. Z.; SOUZA, J. M. G. de; FONSECA, J. F. da.
Afiliação: | Ana Carolina Cunha Araujo Pietroski, Universidade Federal Fluminense. Faculdade de Veterinária - Niterói, RJ, Brazil.; Felipe Zandonadi Brandão, . Faculdade de Veterinária da Universidade Federal Fluminense - Niterói, RJ, Brazil.; Joanna Maria Gonçalves de Souza, Faculdade de Veterinária, Universidade Estadual do Ceará (UECe) - Fortaleza, CE, Brazil.; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Short, medium or long-term hormonal treatments for induction of synchronized estrus and ovulation in Saanen goats during the nonbreeding season.
Ano de publicação: | 2013
Fonte/Imprenta: | Revista Brasileira de Zootecnia, Viçosa, MG, v. 42, n. 3, p. 168-173, 2013.
DOI: | http://dx.doi.org/10.1590/S1516-35982013000300004
Idioma: | Inglês
Conteúdo: | Abstract: The objective of this study was to compare the effect of hormonal treatment duration through the use of intravaginal sponges impregnated with 60 mg MAP for 6 (G6; n = 10), 9 (G9; n = 10) or 12 (G12; n = 10) days. All nulliparous (n = 15) and lactating (n = 15) Saanen goats received 37.5 µg d-cloprostenol and 200 IU eCG 24 hours before sponge removal during the nonbreeding season. After sponge removal, estrus was monitored twice a day (06h00 and 18h00) by the use of fertile bucks. Transrectal ovarian ultrasonography was performed after device removal until ovulation detection. All goats were bred by artificial insemination (AI) or natural breeding (NB). All females received 250 IU hCG 5 d after AI or NB. No difference was observed among groups G6, G9 and G12 for: estrous response (90.0, 100.0 and 100.0%, respectively); interval from sponge removal to estrus (26.7±5.6, 25.2±2.8 and 25.2±3.3 hours), duration of estrus (28.5±7.1; 21.6±3.0 and 25.2±6.1 hours); ovulation rate (80.0, 100.0 and 70.0%); number of ovulations (1.9±0.2, 1.5±0.2 and 1.4±0.2); and pregnancy rate (60.0, 80.0 and 50.0%). Interval from sponge removal to ovulation was shorter in animals from G6 (44.6±2.2 hours) than for animals from G9 (52.8±2.7 hours) and G12 (60.0±4.5 hours). All treatments were effective in the induction of synchronized estrus in Saanen goats during the nonbreeding season, but ovulation occurred earlier when goats received sponges for 6 days.
Palavras-Chave: | Fertility; Goat; Oestrus synchronization; Raça Saanen; Sexual behaviour; Synchronized females; Ultra-Som.
Thesagro: | Cabra; Caprino; Ciclo estral; Comportamento sexual; Endocrinologia; Fertilidade; Hormônio; Ovulação; Reprodução animal; Sincronização do cio.
Thesaurus Nal: | Animal reproduction; Ovulation; Ultrasonography.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/89495/1/api-Short-medium-or-long-term.pdf
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (27553-1) - UPC - AP - DD -  -  -  - DIS