Data/hora: 23/09/2024 16:47:18

Biblioteca(s): 	Embrapa Pecuária Sudeste.	
Data corrente: 	06/12/2011	
Data da última atualização: 	28/07/2022	
Autoria: 	TETZNER, T. A. D.; SARAIVA, N. Z.; PERECIN, F.; NICIURA, S. C. M.; FERREIRA, C. R.; OLIVEIRA, C. S.; GARCIA, J. M.	
Afiliação: 	TATIANE ALMEIDA DRUMMOND TETZNER, UNESP/JABOTICABAL; NAIARA ZOCCAL SARAIVA, UNESP/JABOTICABAL; FELIPE PERECIN, FZEA-USP/PIRASSUNUNGA; SIMONE CRISTINA MEO NICIURA, CPPSE; CHRISTNA RAMIRES FERREIRA, UNICAMP/CAMPINAS; CLARA SLADE OLIVEIRA, UNESP/JABOTICABAL; JOAQUIM MANSANO GARCIA, UNESP/JABOTICABAL.	
Título: 	The effects of ovalbumin as a protein source during the in vitro production of bovine embryos.	
Ano de publicação: 	2011	
Fonte/Imprenta: 	Revista Brasileira de Zootecnia, v. 40, n. 10, p. 2135-2141, oct. 2011.	
DOI: 	https://doi.org/10.1590/S1516-35982011001000010	
Idioma: 	Inglês	
Conteúdo: 	Embryo quality is influenced by the culture conditions that affect in vitro maturation (IVM), fertilization (IVF) and culture (IVC) rates. The present study investigated the feasibility of producing bovine embryos after the replacement of fetal calf serum (FCS) and bovine serum albumin (BSA) by ovalbumin (OVA). The IVM and IVC medium were supplemented with 10% FCS, 4 mg/mL BSA, or 4 mg/mL OVA. The IVF medium was supplemented with 6 mg/mL BSA or OVA. For IVM, supplementation with FCS, BSA, and OVA did not affect nuclear maturation or cortical granule migration. Higher rates of formation of two pronuclei were obtained when FCS was employed for IVM (79.97%), regardless of the supplement used for IVF, and when BSA was used for IVF (59.4%), regardless of the supplement used for IVM. Supplementation with OVA for IVM+IVC (20.40%) and for IVF (22.15%) was inferior to supplementation with FCS for IVM+IVC (30.47%) and with BSA for IVF (28.91%) for blastocyst development. Hatching rates were lower using OVA for IVM+IVC (23.02%) and for IVF (28.93%) compared with FCS and BSA under the same conditions (40.78 and 34.82%, respectively) and BSA for IVF (36.82%). Supplementation with OVA for IVM+IVC and IVF resulted in reduced inner cell mass, trophectoderm cells and total blastocyst cell numbers (17.29, 37.88, and 55.17, respectively). In conclusion, OVA is a protein source for bovine in vitro embryo production, although the quantity and quality of bovine blastocysts using only ovalbumin in the entire in vitro production process are lower than those obtained in the presence of FCS and BSA, when used as supplements in any step of bovine in vitro embryo production.	
Palavras-Chave: 	Bovine embryo; Protein source.	
Thesaurus Nal: 	in vitro culture; ovalbumin.	
Categoria do assunto: 	G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/49368/1/PROCI2011.00188.pdf	
Registro original: 	Embrapa Pecuária Sudeste (CPPSE)	
Exemplares: 	CPPSE - (20751-1) - UPC - AP - DD - PROCI-2011.00188 - TET - 2011.00188 - DIS