Effects of Dietary Chitosan Oligosaccharide and Lactobacillus casei on Growth Performance, Meat Quality and Antioxidant Function of Broilers
This study was conducted to investigate the effects of dietary chitosan oligosaccharide ( COS) and Lactobacillus casei on growth performance, meat quality and antioxidant function of broilers. A total of 240 1?day?old healthy Arbor Acres male broilers were randomly allotted to 4 groups with 6 replicates per group and 10 birds per replicate. The four diets included a basal diet and 3 experimental diets supplemented with 120 mg/kg COS, 2×106 CFU/g Lactobacillus casei, 120 mg/kg COS+2×106 CFU/g Lactobacillus casei, re?spectively. The trial lasted for 42 d. The results showed as follows:1) compared with the control group, dieta?ry supplementation with COS or COS and Lactobacillus casei significantly increased average daily gain, red?ness ( a?) value of breast and thigh muscle, contents of intramuscular fat and inosinic acid, and contents of monounsaturated fatty acid ( MUFA) and polyunsaturated fatty acid ( PUFA) in breast muscle of broilers ( P<0.05), significantly decreased saturated fatty acid (SFA) content in breast muscle and yellowness (b?) value of thigh muscle (P<0.05). 2) Supplementation with Lactobacillus casei in diet significantly increased intra?muscular fat content in thigh muscle and MUFA content in breast muscle while decreased SFA content in breast muscle ( P<0.05) . 3) Dietary supplementation with COS, Lactobacillus casei or two together significantly de?creased malondialdehyde (MDA) content in plasma, breast and thigh muscle (P<0.05), significantly in?creased the total superoxide dismutase ( T?SOD) activity and total antioxidant capacity ( T?AOC) in plasma, breast and thigh muscle (P<0.05), meanwhile decreased the creatine kinase (CK) activity in plasma (P<0.05) . The results indicate that dietary supplementation with COS, Lactobacillus casei or both together can in?crease growth performance and antioxidant function and promote meat quality of broilers, and 120 mg/kg COS supplementation gets the best effect.
chitosan oligosaccharideLactobacillus caseibroilergrowth performancemeat qualityantiox-idant function
国家科技期刊平台
NSTL
万方数据
维普
