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Effects of Substituting a Concentrated Diet for Chestnuts on the Lipid Traits of Muscle and Adipose Tissues in Corsican and Corsican × Large White Pigs Reared in a Sylvo-Pastoral System in Corsica

1998; Elsevier BV; Volume: 50; Issue: 2 Linguagem: Inglês

10.1016/s0309-1740(98)00027-8

1873-4138

C Coutron-Gambotti, G. Gandemer, François Casabianca,

Genetic and phenotypic traits in livestock

In the sylvo-pastoral extensive system in Corsica, pigs are fattened with chestnuts. The decrease in chestnut resource forces the farmers to use more and more concentrated diets for feeding the pigs but so far they have disregarded the consequences of this on meat quality. The aim of the present study was to evaluate the effects of substituting a concentrated diet for chestnuts during the fattening period on the lipid composition of adipose and muscle tissues of ham in Corsican and Corsican × Large-White pigs. The results showed that the Corsican × Large-White pigs had heavier carcasses (125kg versus 106kg) and hams (12·5kg versus 10·2kg) but the genotype affected neither the carcass fatness nor the lipid composition of the adipose and muscle tissues. In addition, compared to chestnuts, the concentrated diet used did not affect live-weight, carcass and ham weights, or the carcass fatness of the pigs at slaughter. However, pigs fattened with a concentrated diet had adipose tissue lipids, intramuscular triglycerides and phospholipids with a lower proportion of polyunsaturated fatty acids (8·1% versus 6·2%, 5·8% versus 4·5%, and 47·7% versus 37·1%, respectively).