engleski

Effects of early castration on production performance, serum lipids, fatty acid profile and desaturation indexes in male chicken broilers fed a diet with increased fat content

This paper analyses the effect of early caponisation at 18 days on the production performance, lipid metabolism and fatty acid profile of fattening broilers fed an increased amount of fat. Early castration did not influence growth performance and feed intake in the experimental birds. Feed conversion was significantly improved in castrated birds (P<0.05). Triglyceride and total cholesterol values were not significantly influenced (P>0.05) by early castration. Glucose values were significantly higher on the 25th (P<0.05) and 40th (P<0.01) day in sham operated birds in comparison to castrated. Fatty acid composition of the thigh muscle was significantly influenced by castration. The most noticeable difference was in the increased percentage of saturated fatty acids (P<0.05) in castrated birds in comparison to uncastrated. Moreover, the saturation index and the thrombogenic index were higher (P<0.05) in castrated birds and unsaturated/saturated fatty acid ratio was higher (P<0.05) in uncastrated birds.

castration; serum lipids; fatty acid profile; growth performance

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