褐藻酸寡糖对肉鸡生长性能、免疫指标和肠道发育的影响
Effects of alginic acid oligosaccharides on growth performance,immune indexes,and intestinal development of broilers
刘萌萌 1张志凯 1杜永恒 1李峰 1马宁1
作者信息
- 1. 五洲丰农业科技有限公司,山东烟台 264000
- 折叠
摘要
试验旨在研究饮水中添加褐藻酸寡糖(AOS)对肉鸡生长性能、胴体重、免疫器官指数、肠道形态和小肠消化酶活性的影响.试验选取360只1日龄Cobb 500肉鸡,随机分为2组,每组18个重复,每个重复10只肉鸡.对照组饲喂基础饲粮,AOS组在饲喂基础饲粮的同时,在1～21日龄饮水中添加200 mg/L褐藻酸寡糖.试验期42d.结果显示:与对照组相比,1～21 d,AOS组肉鸡的平均日增重显著提高(P＜0.05),料重比显著降低(P＜0.05);整个试验期,AOS组肉鸡的平均日增重显著提高(P＜0.05).与对照组相比,AOS组肉鸡21、42 d的胴体重以及21 d的脾脏指数和法氏囊指数显著升高(P＜0.05),AOS组肉鸡21 d和42 d的小肠绒毛高度以及21 d的绒隐比和肠道脂肪酶活性显著升高(P＜0.05).研究表明,在饮水中添加200 mg/L褐藻酸寡糖能够改善肉鸡的生长性能、免疫力、肠道发育和消化能力,从而提高养殖经济效益.
Abstract
The purpose of this experiment was to study the effects of alginic acid oligosaccharides(AOS)added to drinking water on the growth performance,carcass weight,immune organ index,intestinal morphology and small intestinal digestive enzyme activity of broilers.A total of 360 one-day-old Cobb 500 broilers were randomly divided into two groups,with 18 replicates in each group and ten broilers in each replicate.The control group was feed a basal diet,and AOS group was feed a basal diet and added 200 mg/L alginic acid oligosaccharides to drinking water from 1 to 21 days of age.The experimental period was 42 days.The results showed that compared with the control group,the average daily gain of broilers in AOS group was significantly increased(P＜0.05),and the feed to gain ratio was significantly decreased from 1 to 21 days(P＜0.05).During the whole experiment period,the average daily gain of broilers in the AOS group was significantly increased(P＜0.05).Compared to the control group,the carcass weight of broilers in the AOS group was significantly increased at 21 and 42 days(P＜0.05),as well as the spleen index and the bursa of Fabricius index at 21 days(P＜0.05).The villus height of the small intestine in the AOS group broilers was significantly higher at 21 and 42 days,along with a significant increase in the villus-to-crypt ratio and intestinal lipase activity at 21 days(P＜0.05).Studies show that adding the 200 mg/L alginic acid oligosaccharides group to drinking water can improve the growth performance,immunity,intestinal development and digestion of broilers,thereby improving the economic benefits of breeding.
关键词
褐藻酸寡糖/肉鸡/生长性能/免疫指标/肠道发育Key words
alginic acid oligosaccharides/broilers/growth performance/immune indexes/intestinal development引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据