| 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 |
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| 引用本文： | 白洁,刘国华,年芳,郑爱娟,蔡辉益,常文环.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[J].动物营养学报,2017,29(12):4485-4494. |
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| 作者姓名： | 白洁 刘国华 年芳 郑爱娟 蔡辉益 常文环 |
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| 作者单位： | 1. 甘肃农业大学动物科学技术学院,兰州 730070;中国农业科学院饲料研究所,农业部生物饲料重点实验室,北京 100081;2. 甘肃农业大学理学院,兰州,730070;3. 中国农业科学院饲料研究所,农业部生物饲料重点实验室,北京 100081 |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | 壳寡糖 肉鸡 抗氧化 小肠黏膜组织结构 肠道菌群 |
Effects of Dietary Chitosan Oligosaccharide on Meat Quality,Antioxidant Activity,Intestinal Mucosal Structure and Intestinal Flora of Broilers |
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| BAI Jie,LIU Guohua,NIAN Fang,ZHENG Aijuan,CAI Huiyi,CHANG Wenhuan.Effects of Dietary Chitosan Oligosaccharide on Meat Quality,Antioxidant Activity,Intestinal Mucosal Structure and Intestinal Flora of Broilers[J].Acta Zoonutrimenta Sinica,2017,29(12):4485-4494. |
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| Authors: | BAI Jie LIU Guohua NIAN Fang ZHENG Aijuan CAI Huiyi CHANG Wenhuan |
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| Abstract: | This experiment was conducted to study the effect of dietary chitosan oligosaccharide ( COS ) on meat quality, antioxidant activity, intestinal mucosal structure and intestinal flora of broilers.A total of 300 one-day-old healthy Arbor Acres ( AA) male broilers were randomly allotted to 5 groups with 6 replicates per group and 10 birds per replicate.The blank control group was fed a basal diet without any antibiotic, the posi-tive control group was fed the basal diet supplemented with 100 mg/kg chlortetracycline, and the experimental groups were fed the basal diet supplemented with 50, 100 and 150 mg/kg COS, respectively.The experiment lasted for 42 days.The results showed as follows, compared with the blank control group:1) dietary supple-mented with 100 mg/kg COS significantly increased the redness ( a*) value of breast muscle and thigh muscle ( P<0.05) .2) Dietary supplemented with 50 and 100 mg/kg COS significantly increased the serum total su-peroxide dismutase ( T-SOD ) activity during 1 to 21 days of age ( P<0.05 ) , dietary supplemented with 100 mg/kg of COS significantly increased the total antioxidant capacity ( T-AOC) , T-SOD activity and gluta-thione peroxides (GSH-Px) activity in serum during 22 to 42 days of age (P<0.05), dietary supplemented with 50 mg/kg COS significantly increased serum T-SOD and GSH-Px activities during 22 to 42 days of age (P<0.05).3) Dietary supplemented with 100 mg/kg COS significantly increased the villous height and villous height/crypt depth of jejunum during 1 to 21 days of age and 22 to 42 days of age (P<0.05).4) Dietary sup-plemented with 50 and 100 mg/kg COS significantly decreased the ileal Escherichia coli number (P<0.05). 5) Dietary supplemented with 100 mg/kg COS significantly increased the average daily gain of broilers ( P<0.05) .It can be concluded that dietary COS can increase antioxidant activity, improve meat quality and intesti-nal mucosal structure, and improve the intestinal flora structure to a certain extent of broilers.The optimum supplemental level of COS in diet for broilers is 100 mg/kg. |
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| Keywords: | chitosan oligosaccharide broilers antioxidation intestinal mucosal structure intestinal flora |
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