EFFECT OF VEGETABLE AND ANIMAL DIETARY FA TS ON LIPOGENESIS IN PIGS

We have compared the effect of dietary fats, unsaturated (rapeseed oil : RO) or saturated (cow milk: CM), on growth performance, lipogenesis and fatty acid composition of backfat. Both group had the same food in take and growth performance. Nevertheless, the percentage of body fat increases with the diet RO (P < 0.05). Lipogenesis enzyme activities o f backfat were greater with RO than with MC. Then, it appeared that pi gs fed diets containing high level of unsaturated fat with long-chain fatty acids have both greater lipogenesis and carcass fatness as oppos ed to pigs fed diet containing saturated fat with medium-chain fatty a cids. The fatty acids composition of lipids deposited with RO diet may alter the technological qualities of adipose tissues and that of meat .