Data/hora: 11/06/2024 10:12:56

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	24/01/2022	
Data da última atualização: 	09/02/2022	
Autoria: 	MONTEIRO, P. A. M.; MACIEL, I. C. F.; ALVARENGA, R. C.; OLIVEIRA, A. L.; BARBOSA, F. A.; GUIMARAES, S. T.; SOUZA, F. A.; LANNA, D. P. D.; RODRIGUES, B. M.; LOPES, L. S.	
Afiliação: 	Universidade Federal de Minas Gerais; Michigan State University; RAMON COSTA ALVARENGA, CNPMS; Universidade Federal de Minas Gerais; SERGIO TEIXEIRA GUIMARAES, CNPMS; Universidade Federal de Minas Gerais; Universidade de São Paulo; Universidade Federal de Minas Gerais; Universidade Federal de Minas Gerais.	
Título: 	Carcass traits, fatty acid profile of beef, and beef quality of Nellore and Angus x Nellore crossbred young bulls finished in a feedlot.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Livestock Scienc, v. 256, 104829, 2022.	
DOI: 	https://doi.org/10.1016/j.livsci.2022.104829	
Idioma: 	Inglês	
Conteúdo: 	The objective of this study was to evaluate carcass traits, fatty acid profile of longissimus thoracis (LT) muscle, and beef quality (shear force and color traits) of Nellore (NEL) and Angus x Nellore (AN) crossbred young bulls finished in feedlot. For this end, 25 Nellore (Initial body weight IBW = 344.4 ± 30 kg) and 25 Angus x Nellore crossbreed bulls (IBW = 426.5 ± 27 kg) were evaluated. The AN animals had higher final body weight (FBW), average daily gain of carcass (ADGc), hot carcass weight (HCW), rib-eye area (REA), and final pH in LT muscle, while NEL had higher subcutaneous fat thickness (SFT) (P < 0.01). The LT muscle of NEL had lower concentrations of saturated fatty acids (SFA) and higher concentrations of monounsaturated fatty acids (MUFA) and poliunsaturated fatty acids (PUFA) besides a higher &#916;9 -desaturase index (P < 0.05). There was a difference in color traits between breeds and among aging time points (P < 0.05). Shear force was influenced only by aging time (P < 0.05). The crossbred animals showed improved quantitative carcass traits compared to purebred Nellore animals. Breed has the potential to change muscle FA profile. The crossbred animals were not able to produce a more tender beef when compared to NEL.	
Palavras-Chave: 	CLA; Crossbreeding; N-3 fatty acids.	
Thesagro: 	Ácido Graxo; Bovino; Carne; Cruzamento Animal; Gado Nelore.	
Thesaurus Nal: 	Beef; Polyunsaturated fatty acids.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (29751-1) - UPC - AP - DD -  -  -  - DIS