Autor(es): Morais, Maria Clara C. ; Esteves, Luciana ; Souza-Fabjan, Joanna M. G. ; Oliveira, Maria Emilia F. [UNESP] ; Silva, Marcio Roberto ; Brandao, Felipe Z. ; Fonseca, Jeferson F.
Data: 2021
Identificador Persistente: http://hdl.handle.net/11449/208912
Origem: Oasisbr
Assunto(s): Embryo quality; Goat; Transcervical embryo transfer
Made available in DSpace on 2021-06-25T11:24:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-01
Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA)
Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
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.
Univ Fed Fluminense, Fac Vet, Rua Vital Brazil 64, BR-24320340 Niteroi, RJ, Brazil
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Dr Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
Embrapa Caprinos & Ovinos, Estr Sobral Groairas,Km 04,CP 145, BR-62010970 Sobral, CE, Brazil
Embrapa Gado Leite, Rua Eugenio do Nascimento 610, BR-36038330 Juiz De Fora, MG, Brazil
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Dr Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA): 20.19.01.004.00.03.001
FAPEMIG: CVZ-APQ 01367/09
FAPEMIG: CVZ PPM 00119-11
