The influence of goat genotype on the production of Capretto and Chevon carcasses. 4. Chemical composition of muscle and fatty acid profiles of adipose tissue

摘要

The chemical composition of muscle and the fatty acid composition of adipose tissue from the carcasses obtained from 50 buck kids from five genotypes (10 kids/genotype), Boer x Angora (BA), Boer x Saanen (BS), Feral x Feral (FF), Saanen x Angora (SA) and Saanen x Feral (SF) reared for Capretto and Chevon production, were compared. Genotype did not influence the chemical composition of muscle except for muscle ftom BA carcasses, which had significantly higher extractable fat content. The proportions of individual fatty acids differed significantly between genotypes for the Capretto kids. Adipose tissue from the Capretto group had a higher concentration of palmitic acid (31-34/100), while the proportion of oleic acid (37-40/100) was greater in the Chevon group. With an increase in age and resultant change in diet, the saturated fatty acid concentration decreased and the unsaturated fatty acid concentration increased.