饲粮添加壳寡糖对肉鸡肉品质、抗氧化性能、小肠黏膜组织结构及肠道菌群的影响

发布时间：2018-05-08 23:24

本文选题：壳寡糖 + 肉鸡　；参考：《动物营养学报》2017年12期

【摘要】：本试验旨在研究饲粮添加壳寡糖(COS)对肉鸡肉品质、抗氧化性能、小肠黏膜组织结构及肠道菌群的影响。选用300只1日龄健康的爱拔益加(AA)雄性肉鸡,随机分为5组,每组6个重复,每个重复10只鸡。空白对照组饲喂不含抗生素的基础饲粮,正对照组饲喂添加100 mg/kg金霉素的基础饲粮,试验组分别饲喂添加50、100和150 mg/kg COS的基础饲粮。试验期42 d。结果表明,与空白对照组相比:1)饲粮添加100 mg/kg COS显著提高了胸肌和腿肌的红度(a*)值(P0.05)。2)饲粮添加50和100 mg/kg COS显著提高了1~21日龄血清总超氧化物歧化酶(T-SOD)活性(P0.05),饲粮添加100 mg/kg COS显著提高了22~42日龄血清总抗氧化能力(T-AOC)和T-SOD、谷胱甘肽过氧化物酶(GSH-Px)活性(P0.05),饲粮添加50 mg/kg COS显著提高了22~42日龄血清T-SOD和GSH-Px活性(P0.05)。3)饲粮添加100 mg/kg COS显著提高了1~21日龄和22~42日龄空肠绒毛高度和绒毛高度/隐窝深度(P0.05)。4)饲粮添加50和100 mg/kg COS显著降低了回肠大肠杆菌数量(P0.05)。5)饲粮添加100 mg/kg COS显著提高了肉鸡的平均日增重(P0.05)。由此可见,饲粮添加COS可提高肉鸡抗氧化性能,改善肉鸡肉品质和肠黏膜组织结构,并在一定程度上改善肠道菌群结构。COS在肉鸡饲粮中的适宜添加量为100 mg/kg。
[Abstract]:The purpose of this study was to study the effects of chitosan oligosaccharide (COS) on meat chicken quality, antioxidant activity, intestinal mucosal tissue structure and intestinal flora. Three hundred 1-day-old healthy male broilers were randomly divided into 5 groups, 6 replicates in each group and 10 in each group. The blank control group was fed with basic diet without antibiotics, while the control group was fed with 100 mg/kg chlortetracycline. The experimental group was fed with 50100 mg/kg COS and 150 mg/kg COS respectively. The experimental period was 42 days. The results show that Compared with the control group, addition of 100 mg/kg COS to 1: 1 diet significantly increased the redness of pectoralis and leg muscles (P0.05 / 2). The dietary supplementation of 50 and 100 mg/kg COS significantly increased the activity of serum total superoxide dismutase T-SOD (P0.05N) and the dietary supplementation of 100 mg/kg COS at the age of 1 ~ 21 days. The total antioxidant capacity (T-AOC) and T-SOD, glutathione peroxidase (GSH-Px) activity and the activity of serum T-SOD and GSH-Px were significantly increased at 22 ~ 42 days old (22 ~ 42 days old), and glutathione peroxidase (GSH-Px) activity was significantly increased by adding 50 mg/kg COS to the diet at 22 ~ 42 days old (P0.05N 路3). The dietary supplementation of 100 mg/kg COS to the diet significantly increased the activity of serum T-SOD and GSH-Px activity at the age of 1 21 days. Addition of 50 and 100 mg/kg COS to the diets significantly decreased the number of Escherichia coli in the ileum (P0.05 路5). The addition of 100 mg/kg COS significantly increased the average daily gain (P0.05N) of broilers. It can be seen that dietary addition of COS can improve the antioxidant performance of broilers, improve the quality of meat chicken and intestinal mucosal tissue structure, and to some extent, improve the intestinal microflora structure of broiler diet. The suitable addition amount is 100mg / kg.
【作者单位】：甘肃农业大学动物科学技术学院;中国农业科学院饲料研究所农业部生物饲料重点实验室;甘肃农业大学理学院;
【基金】：现代农业产业技术体系北京市家禽创新团队项目现代农业产业技术体系国家肉鸡产业技术体系项目(CARS-42)
【分类号】：S831.5

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