植物多酚对黄羽肉鸡抗氧化性能、肠道形态及肉品质的影响

Effects of Botanical Polyphenol on Antioxidant Capacity,Intestinal Morphology and Meat Quality of Yellow Broilers

本试验旨在研究植物多酚对黄羽肉鸡抗氧化性能、肠道形态及肉品质的影响。选取1日龄雄性黄羽肉鸡288只,随机分为4组,每组6个重复,每个重复12只。各组分别饲喂基础饲粮(对照组)、基础饲粮+100 g/t抗敌素(抗生素组)、基础饲粮+500 mg/kg植物多酚(BP500组)和基础饲粮+1 000 mg/kg植物多酚(BP1000组)。试验期56 d。结果表明:1) 21日龄时,BP500组和BP1000组肉鸡血清中过氧化氢酶(CAT)活性显著高于抗生素组(P <0. 05); 56日龄时,BP1000组肉鸡血清中CAT活性显著高于其他3组(P<0.05)。2) 21日龄时,BP500组和BP1000组肉鸡回肠绒毛高度/隐窝深度(V/C)显著低于抗生素组(P <0.05); 56日龄时,BP500组肉鸡回肠V/C显著高于对照组和抗生素组(P<0.05)。3) 56日龄时,BP1000组胸肌肉色红度(a*)值显著高于其他3组(P<0.05),BP500组和BP1000组胸肌失水率显著低于其他2组(P<0.05),BP500组和BP1000组胸肌24 h滴水损失显著低于其他2组(P<0.05),BP1000组胸肌48 h滴水损失显著低于对照组和抗生素组(P <0. 05)。由此可见,饲粮添加500和1 000 mg/kg的植物多酚均能改善黄羽肉鸡肠道形态,提高机体的抗氧化能力,并改善鸡肉品质。植物多酚的推荐添加量为1 000 mg/kg。

This experiment was conducted to investigate the effects of botanical polyphenol on antioxidant capacity,intestinal morphology and meat quality of yellow broilers.A total of 288 one-day-old male yellow broilers were selected and randomly allocated to 4 groups with 6 replicates per group and 12 chickens per replicate.Broilers in the four groups were fed a basal diet(control group),the basal diet+antibiotics(antibiotic group),the basal diet+500 mg/kg botanical polyphenol(BP500 group)and the basal diet+1 000 mg/kg botanical polyphenol(BP1000 group),respectively.The experiment lasted for 56 days.The results showed as follows:1)on 21 days of age,the serum catalase(CAT)activity of BP500 group and BP1000 group was significantly higher than that of antibiotic group(P<0.05);on 56 days of age,the serum CAT activity of BP1000 group was significantly higher than that of other three groups(P<0.05).2)On 21 days of age,the villous height/crypt depth(V/C)in ileum of BP500 group and BP1000 group was significantly higher than that of antibiotic group(P<0.05);on 56 days of age,the V/C in ileum of BP500 group was significantly higher than that of control and antibiotic groups(P<0.05).3)On 56 days of age,the meat color of redness(a^*)value in breast muscle of BP1000 group was significantly higher than that of other three groups(P<0.05);the water loss rate of breast muscle of BP500 group and BP1000 group was significant lower than that of other two groups(P<0.05);the 24 h drip loss of breast muscle of BP500 group and BP1000 group was significant lower than that of the control group(P<0.05),the 48 h drip loss of breast muscle of BP1000 group was significant lower than that of control group and antibiotic groups(P<0.05).It is concluded that botanical polyphenol can improve intestinal morphology,antioxidant capacity and meat quality of yellow broilers.The recommended addition of botanical polyphenol is 1 000 mg/kg.