Effect of inclusion of lysolecithin or multi-enzyme in low energy diet of broiler chickens

A total of 672 one-d-old Ross 308 (mixed gender) broiler chicks with an average initial body weight of 34.1 +/- 0.2g were used in a 28-d feeding trial to investigate the effect of supplementing low energy diets with an emulsifier or multi-enzyme complex on broiler. Chickens were allocated to one of six treatments with seven pens/treatment and 16 birds/pen. Treatments were (1) PC (basal diet), (2) NC (PC-100 kcal ME/kg), (3) L05 (NC+0.05% emulsifier), (4) L10 (NC+0.10% emulsifier), (5) E05 (NC+0.05% multi-enzyme), and (6) E10 (NC+0.10% multi-enzyme). Results showed that supplementing low energy diet with 0.10% multi-enzyme or 0.10% emulsifier improved (P<.05) overall body weight gain. The relative weight of breast meat decreased (P<.05) by adding 0.10% multi-enzyme compared to chickens fed E05 diet. Feeding the chickens with E10 diet increased relative weight of abdominal fat. Chickens fed NC or L10 diets had the lowest (P<.05) relative weight of liver. The addition of emulsifier or multi-enzyme to the diets decreased drip loss (P<.05). Results indicated that supplementing low energy diet with multi-enzyme or emulsifier improved growth performance and alleviated negative effects of lowering dietary ME level on meat quality of broilers.