关键词：
胆汁酸盐;蚕蛹饲料蛋白粉;冬虫夏草喷干粉;黄羽肉鸡
摘 要：
研究探究了不同胆汁酸盐、蚕蛹饲料蛋白粉及冬虫夏草喷干粉添加量对肉鸡生产性能、肠道组织形态学和微生物学的影响,旨在确定能促进雏鸡生产性能、肠道对营养物质消化吸收和肠道健康发育的适宜添加水平.试验将480只1日龄肉雏鸡分为6组,Ⅰ组为对照组,饲喂基础日粮,Ⅱ~Ⅵ组为试验组,Ⅱ、Ⅲ、Ⅳ组分别添加250 mg/kg、500 mg/kg、750 mg/kg胆汁酸盐,Ⅴ和Ⅵ组在250 mg/kg胆汁酸盐基础上分别添加50 g/kg蚕蛹饲料蛋白粉、50 g/kg冬虫夏草喷干粉.饲养35 d,期间采集肉雏鸡不同日龄肠道及肠道内容物,并进行处理和测定.结果表明:在日粮中添加适量的胆汁酸盐、蚕蛹饲料蛋白粉、冬虫夏草喷干粉能有效提高肉雏鸡生产性能,小肠绒毛高度、隐窝深度和降低大肠杆菌数.添加250 mg/kg胆汁酸盐对肉雏鸡生产性能和控制大肠杆菌数效果最佳,而添加750 mg/kg胆汁酸盐能有效提高肉雏鸡肠道绒毛高度、隐窝深度和肌层厚度等指标.
作 者：
WANG Gailing;CHEN Lingyun;LIN Hao;ZHUOMA Dongzhi;DING Baoan;College of Agriculture and Animal Husbandry, Qinghai University;
关键词：
bile salts;;silkworm pupa feed protein powder;;cordyceps sinensis spray dried powder;;yellow-feather broilers
摘 要：
This study aimed to explore the effects of different bile acids, silkworm feed protein powder and cordyceps sinensis powder on production performance, intestinal histomorphology and microbiology of broilers, and determine the appropriate addition level to promote chick performance, intestinal digestion and absorption of nutrients, and healthy intestinal development. Four hundred and eighty one-day-age broiler chicks were divided into 6 groups. Group Ⅰ was the control group to feed the basal diet, group Ⅱ to Ⅵ were the experimental groups, and groups Ⅱ, Ⅲ and Ⅳ were added 250 mg/kg, 500 mg/kg, 750 mg/kg bile acid salt in basal diet respectively, group Ⅴ and Ⅵ were added 50 g/kg silkworm pupa feed protein powder and cordyceps sinensis spray dry powder on the basis of 250 mg/kg bile acid salt.The intestine and intestinal contents at different ages were collected during the 35-day period and measured. The results showed that adding proper amount of bile acid salt, silkworm pupa feed protein powder and cordyceps sinensis dry powder in the diet could effectively improve the performance of broiler chicks, intestinal villus height, crypt depth and decrease E. coli count. The addition of 250 mg/kg bile acid salt had the best effect on the performance of broilers and the control of E. coli, while the addition of 750 mg/kg bile acid salt could effectively improve the intestinal villus height, crypt depth and muscle thickness of broilers.
