Effect of dietary fat on fatty acid composition of lipids from breast muscle and abdominal fat of broiler chickens

Fatty acid (FA) composition of adipose tissue and breast muscle was determi ned in broiler chickens fed from 8 day of life till slaughter on wheat-soya bean meal diets supplemented with different fats. The following fats and fa t sources were used: beef tallow, lard, soya oil, rape seed oil or mixtures of tallow and soya oil, linseed seed and lard or rape seed and lard. The d ietary fatty acids (FA) profile affected FA profile of lipids and the propo rtion of n-6/n-3 PUFA in broilers. The supplementation of diet with beef ta llow caused the highest surplus n-6 over n-3 PUFA in adipose and breast mus cle (11.9 and 10.3, respectively). The proportion of n-6/n-3 PUFA in adipos e tissue and breast muscle of birds fed on diet supplemented with the mixtu re of full-fat linseed and lard ( 1.2 and 1.6, respectively) was the closes t to the proportion of these fatty acids recommended for humans.