当前位置: 首页 > 文章 > 铬对热应激下蛋鸡空肠组织结构的影响 畜牧与兽医 2003,35 (2) 3-5
Position: Home > Articles > Effect of dietary chromium on the histological structure of Jejunum on heat stressed layers Animal Husbandry & Veterinary Medicine 2003,35 (2) 3-5

铬对热应激下蛋鸡空肠组织结构的影响

作  者:
王珏;郑艺梅;金光明;刘德义;于群;李升和
单  位:
安徽技术师范学院
关键词:
有机铬;热应激;蛋鸡;空肠组织结构
摘  要:
将处于热应激条件下的 1 92只 35周龄新罗曼褐壳蛋鸡随机分为 6组 ,分别用玉米 豆粕型基础饲粮和添加 1 0 ,2 0 ,30 ,40 ,50g/t含铬量为7 41 0mg/kg的葡萄糖耐量因子 (GTF)的试验饲粮饲喂 52d。试验结束时取试验鸡 36只 ,每组 6只 ,取空肠制作切片观察组织结构。结果试验组空肠绒毛和肠腺的长度与对照组相比均增长 ,肠壁中有大量弥散淋巴组织和淋巴集结。其中添加 50g/t组的肠绒毛与对照组相比差异极显著 ,添加 2 0g/t组的肠腺与对照组相比差异极显著。表明补铬使热应激下蛋鸡空肠绒毛、肠腺的长度增加 ,淋巴组织发达。可以改善消化管的组织结构 ,增强机体的消化和免疫功能 ,具有缓解高温热应激反应的作用
译  名:
Effect of dietary chromium on the histological structure of Jejunum on heat stressed layers
作  者:
WANG Jue,ZHENG Yi mei,JIN Guang ming,LIU De yi,YU Qun,LI Sheng he (AnHui Technical Teachers College, Fengyang 233100 China)
关键词:
Chromium; Heat stress; Layer; Jejunum; histological structure
摘  要:
Aim: To study the effect of chromium on the histological structure of jejunum on heat stressed layers. Methods: 192 heat stressed layers were randomly divided in six groups at the age of 35 weeks and fed with a basal maize soybean meal diet in the control group and the glucose tolerance factor(7 410 mg of Cr/kg) supplemented with 0, 10,20,30,40,50 g/t in the experimental groups. On 52ed day, 6 layers were chosen from each group and the jejunums were made into sections to observe their histological structure. Result: Intestine villus and intestinal glands in the experiment groups were all longer than in the control group. There were a lot of diffuse lymphoid tissues and lymphoid nodules in jejunum. The intestine villus of the layers with 50 g/t was different from the control group and the intestinal gland of the layers given the diet supplemented with 20 g/t was different from the control group. Conclusion: Cr could change the length of the intestine villus and intestinal gland in heat stressed layers, improve the histological structure of digestive vassal, strengthen digestion and immune function of body and lessen the reaction to heat stress at high temperature.

相似文章

计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊