Effects of different levels of L-carnitine and additional levels of Lysine-Methionine mixed on performance, cecal microflora and blood antioxidant indices of broiler chick

Authors

1 Graduated student of animal nutrition, Islamic Azad University, Rasht Branch, Department of Animal Science, Rasht, Iran

2 Ph.D student of poultry nutrition, Tabriz university, Department of Animal Science, Tabriz, Iran

3 Graduated student of animal nutrition, Urmia University, Department of Animal Science, Urmia, Iran

4 Assistant professor of animal nutrition, Islamic Azad University, Rasht Branch, Department of Animal Science, Rasht, Iran

Abstract

This experiment was conducted with 270 male Ross broiler chickens (308) to evaluate the effect of L-carnitine and additional levels of Lysine-Methionine mixed on performance, cecal microflora of broiler chick. Experiment was based on 3×3 completely randomized factorial design with nine groups (ten broilers per replicate and three replicates per treatment) during three starter (0-21days), grower (22-35 days) and finisher (35-42 days) periods. Different levels of L-carnitine (0 mg/kg, 75 mg/kg and 150 mg/kg) and additional lysine-methionine mixed levels 0, 15 and 30% more than recommended by Ross 308 broiler chickens  manual were used. The highest feed consumption and lowest weight gain was observed for broiler fed diet supplemented with 150 mg/kg L-carnitine with 15% additional lysine-methionine mixed and the lowest feed consumption and highest weight gain was observed for broiler fed diet supplemented with 150 mg/kg L-carnitine with 30% additional lysine-methionine mixed respectively (P<0.05). Furthermore, the highest and lowest lactobacilli population were observed in diet supplemented with 75, 150 mg/kg L-carnitine with 15% additional lysine-methionine mixed and 150 mg/kg L-carnitine with 30% additional lysine-methionine mixed respectively (P<0.05). In conclusion, result of this study showed that consumption of 150 mg/kg L-carnitine and 15% Lys -Met mix can increase production and health indices related to the broiler.

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