Data/hora: 12/06/2024 08:44:39

Biblioteca(s): | Embrapa Caprinos e Ovinos; Embrapa Gado de Leite.
Data corrente: | 21/08/2020
Data da última atualização: | 09/08/2021
Autoria: | MORAIS, M. C. C.; ESTEVES, L. V.; SOUZA-FABJAN, J. M. G.; OLIVEIRA, M. E. F.; SILVA, M. R.; BRANDÃO; FONSECA, J. F. da.
Afiliação: | MARIA CLARA C. MORAIS, Universidade Federal Fluminense; LUCIANA V. ESTEVES, Universidade Federal Fluminense; JOANNA M. G. SOUZA-FABJAN, Universidade Federal Fluminense; MARIA EMILIA F. OLIVEIRA, Universidade Estadual Paulista; MARCIO ROBERTO SILVA, CNPGL; FELIPE Z. BRANDÃO, Universidade Federal Fluminense; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Factors affecting pregnancy rates for goat embryos recovered and transferred by transcervical route.
Ano de publicação: | 2020
Fonte/Imprenta: | Small Ruminant Research, v. 192, e106215, 2020.
DOI: | https://doi.org/10.1016/j.smallrumres.2020.106215
Idioma: | Inglês
Conteúdo: | Abstract: This study evaluated the factors affecting non-surgical embryo transfer (NSET) efficiency in goats. Donor goats (n =10) were superovulated, mated and embryos were collected by non-surgical embryo recovery 7 d after estrous onset. A total of 28 pluriparous recipient goats were subjected to short-term progestagen-based estrous induction protocol with equine chorionic gonadotropin. They received 36 fresh embryos as single (n =20) or in pairs (n =8) by NSET 6?7 d after estrous onset, ipsilateral to the corpora lutea (CL). Pregnancy rate was affected (P <0.05) by embryo stage (blastocyst =63.6 % vs morulae =24.0 %) and quality (Grade 1 =57.1 %; 2 =33.3 %; 3 =10.0 %) and not (P >0.05) by the uterine horn, number of CL (1?3), lactational status and number of embryos transferred per recipient goats. Both overall pregnancy and kidding rates were 32.1 % and 13 kids were born, representing an embryo survival rate of 36.1 %. Goat embryo transfer programs can be successfully performed by using non-surgical techniques, achieving satisfactory embryonic survival rates.
Palavras-Chave: | Embryo quality; Transcervical embryo transfer.
Thesagro: | Caprino; Reprodução Animal; Transferência de Embrião.
Thesaurus Nal: | Animal reproduction; Goats.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Gado de Leite (CNPGL)

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CNPC - (39624-1) - UPC - AP - DD -  -  -  - DIS
CNPGL - (25150-1) - UPC - AP - DD -  -  -  - DIS