Dietary effects on muscle fatty acid composition of finished heifers

Pesquisa Agropecuária Brasileira

Regiane Gregório Da Silva²  Ivanor Nunes Do Prado¹  Makoto Matsushita¹  Nilson Evelázio De Souza¹ 

[1] ,Capes

关键词: muscles;    rations;    unsaturated fatty acids;    saturated fatty acids;    músculos;    ração;    ácidos graxos insaturados;    ácidos graxos saturados;   

DOI  :  10.1590/S0100-204X2002000100013

来源: SciELO

【 摘 要 】

The effects of diet on Longissimus muscle fatty acid composition was determined using 24 crossbred heifers of Simmental vs. Nelore and Limousin vs. Nelore. The experimental diets were: 1) corn and yeast (CY); 2) corn, cottonseed meal + meat and bones meal (CMB); 3) cassava hull and yeast (CHY); 4) cassava hull, cottonseed meal + meat and bones meal (CHMB). Feeding CHMB diets resulted in lower lipid and higher cholesterol contents (P<0.05) for both crosses. Most of the identified fatty acids were monounsaturated, and the highest percentage was found to oleic acid (C18:1w9), with values ranging from 32.54 to 46.42%. Among the saturated fatty acids the palmitic acid (C16:0) showed the highest percentage, with its contents ranging between 19.40 and 32.44%. The highest polyunsaturated/saturated fatty acid ratio was of 0.30, and the lowest was of 0.08. Feeding CY diets resulted in lower cholesterol and higher polyunsaturated fatty acid contents of the Longissimus muscle.

【 授权许可】

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