Data/hora: 09/06/2024 09:27:27

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Oxidative stability, fatty acid composition and health lipid indices of Longissimus dorsi muscle from Aberdeen Angus steers produced in different feeding systems	
Autores: 	Terevinto,Alejandra; Cabrera,María Cristina; Saadoun,Ali.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Beef meat; Pasture; Feedlot; Oxidative stability; Antioxidant enzyme; Fatty acid.	
Resumo: 	ABSTRACT:  The aim of this study was to evaluate the oxidative and anti-oxidative status of unaged and aged Longissimus dorsi (LD) muscle obtained from a commercial abattoir. Also, fatty acid composition and calculated health lipid indices of meat were compared. Animals slaughtered were Aberdeen Angus steers raised in three typical feeding systems of Uruguay: (1) Pasture (n=10), (2) Pasture + Supplement (P+S) with corn grain (n=10), and (3) Feedlot (n=10). Feeding had no effect on lipid and protein oxidation but the antioxidant enzymes activities were affected as follows: superoxide dismutase (SOD): Pasture, Feedlot &gt; P+S; catalase: Pasture &gt; P+S, Feedlot; glutathione peroxidase (GPx): Feedlot &gt; P+S &gt; Pasture. Total antioxidant potential, determined by Fenton reaction, was higher in aged meat from Pasture compared with aged meat from Feedlot. Meat from Pasture and P+S presented a higher eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and total n-3 content and a lower lipid content, n-6/n-3 ratio and trombogenic index compared to meat from Feedlot. In conclusion, Pasture seems to produce a more resistant meat against induced oxidation processes, particularly after ageing, and a healthier meat together with meat from P+S system, regarding fatty acid composition and lipid indices, compared to Feedlot.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200752	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20190537	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.49 n.12 2019	
Fonte: 	info:eu-repo/semantics/openAccess