Data/hora: 06/06/2024 07:46:12

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	18/11/2019	
Data da última atualização: 	09/12/2019	
Autoria: 	FIGUEIRA, L. M.; ALVES, N. G.; BATISTA, R. I. T. P.; BRAIR, V. L.; LIMA, R. R.; OLIVEIRA, M. E. F.; FONSECA, J. F. da; SOUZA-FABJAN, J. M. G.	
Afiliação: 	LUCAS MACHADO FIGUEIRA, Universidade Federal de Lavras (UFLA) - Lavras, MG, Brazil; NADJA GOMES ALVES; RIBRIO IVAN TAVARES PEREIRA BATISTA, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil; VIVIANE LOPES BRAIR, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; RENATO RIBEIRO LIMA; MARIA EMILIA FRANCO OLIVEIRA, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) - Jaboticabal, SP, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil.	
Título: 	Pregnancy rate after fixed-time transfer of cryopreserved embryos collected by non-surgical route in Lacaune sheep.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Reproduction in Domestic Animals, v. 54, n. 11, p. 1493-496, Nov. 2019.	
DOI: 	http://dx.doi.org/10.1111/rda.13550	
Idioma: 	Inglês	
Conteúdo: 	Abstract: This study investigated the feasibility of applying fixed-time (cryopreserved) embryo transfer in ewes. Embryos (n = 106) were non-surgically recovered from superovulated donors (n = 39) on day 6?7 after oestrus. Straws containing one or two embryos (morulae and/or blastocysts) subjected to either slow freezing (SF, n = 62) or vitrification (VT, n = 44) were randomly used within fixed-time embryo transfer on Day 8.5. Recipient ewes were nulliparous (n = 58) bearing corpora lutea after synchronous oestrous induction protocol. The pregnancy rate was higher (p =.03) in SF (39.4%) than VT (16.9%) and survival rate tended (p =.08) to be higher in SF than in VT (25.8% vs. 15.9%). Lambing rates were similar (p =.13) between SF (20.9%) and VT (15.9%). Embryos recovered by non-surgical route after cervical dilation treatment and later cryopreserved by either slow freezing or vitrification produced reasonable pregnancy rates after FTET.	
Palavras-Chave: 	Embryo cryopreservation; Multiple ovulation; Ovine; Taxa de prenhez.	
Thesagro: 	Ovino; Ovulação; Transferência de Embrião.	
Thesaurus Nal: 	Animal reproduction; Embryo transfer; Ewes; Sheep.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (39314-1) - UPC - AP - DD -  -  -  - DIS