Abstract

The aim of this study was to investigate the effects of supplementing diets with goji berry (Lycium barbarum L.) leaves (GBL) on performance, meat lipid oxidation, meat chemical composition, carcass traits, some internal organs, digestive tract parts and some blood parameters in broiler chickens. A total of 144 d-old mix-sexed chicks (Ross-308) were weighed and randomly allocated to four experimental groups with three replicates of 12 chickens each. Treatments were as follows: (i) basal diet (control), (ii) basal diet+1 g/kg GBL, (iii) basal diet + 5 g/kg GBL and (iv) basal diet+ 10 g/kg GBL. After analysis of one-way ANOVA, the results revealed that 10 g/kg GBL improved body weight (0-6 weeks) (P<0.01), body weight gain (4-6 weeks) and feed intake (4-6 and 0-6 weeks) (P<0.05). Feed conversion ratio did not significantly improve with GBL treatment (P>0.05). In addition, 10 g/kg GBL of the diet increased heart weight and proventriculus length (P<0.05), however, decreased breast meat lipid oxidation on d 21 (P<0.05). Experimental treatments did not affect the total cholesterol, HDL, glucose and triglycerides (P>0.05) but decreased LDL (P<0.05). In conclusion, supplementation of 10 g/kg GBL to broiler chicken diet may improve performance and may decrease breast meat lipid oxidation and blood serum LDL.

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