Abstract
The present study is conducted to determinate fatty acids (FA) composition in 3 adipose tissues. Subcutaneous and perirenal adipose tissues were prepared from 24 Ningxiang castrated boars and 24 castrated gilts fattened by a traditional diet for 56 d, respectively. The results showed that the FA profile in the 3 adipose tissues (dorsal subcutaneous adipose [DSA], abdominal subcutaneous adipose [ASA], and perirenal adipose [PA]) differed greatly. In boars, the proportions of oleic acid (c18:1n9c) (P < 0.05), cis-11-20c acid (c20:1) (P < 0.05), and α-linolenic acid (c18:3n3) (P < 0.05) in DSA were the highest among 3 adipose tissues, whereas palmitic acid (c16:0) (P < 0.05) and stearic acid (c18:0) (P < 0.05) in DSA had the lowest proportion. In gilts, cis-11-20c acid (c20:1) (P < 0.05) in DSA was the highest, while stearic acid (c18:0) (P < 0.05) in subcutaneous adipose was the lowest among these deposits. Overall, the results indicate that from external to inner carcass of boars, the sum of saturated fatty acids (SFA) increase, but the sum of monounsaturated fatty acids (MUFA) decrease, while ASA of gilts have the greatest proportion of MUFA and the lowest SFA. Sex and adipose locations as significant effects on the FA profile are interaction.
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