葡萄糖三丁酸酯对肉鸡生长性能、屠宰性能、血清生化指标及肠道黏膜形态的影响

Effects of Glucose Tributyrate on Growth Performance,Slaughter Performance,Serum Biochemical Indexes and Intestinal Mucosal Morphology of Broilers

本试验旨在研究葡萄糖三丁酸酯对肉鸡生长性能、屠宰性能、血清生化指标及肠道黏膜形态的影响。选择健康、体重相近的10日龄雄性爱拔益加(AA)肉鸡160只,随机分为4组,每组4个重复,每个重复10只。空白组饲喂基础饲粮,低、中和高剂量组分别在基础饲粮中添加0.05%、0.10%和0.20%的葡萄糖三丁酸酯。试验期32 d。结果显示:1)15~42日龄时,低、中和高剂量组平均日采食量和平均日增重显著高于空白组(P<0.05),低、中和高剂量组料重比显著低于空白组(P<0.05)。2)28日龄时,高剂量组腿肌率显著高于其他各组(P<0.05);42日龄时,低、中和高剂量组腿肌显著高于空白组(P<0.05)。3)28日龄时,中和高剂量组血清总蛋白(TP)含量显著高于空白组(P<0.05),低、中和高剂量组血清白蛋白(ALB)含量显著高于空白组(P<0.05);42日龄时,中和高剂量组血清TP和ALB含量显著高于空白组(P<0.05),低、中和高剂量组血清丙氨酸氨基转移酶活性显著低于空白组(P<0.05),中剂量组血清尿素氮含量显著低于空白组(P<0.05)。4)高剂量组十二指肠绒毛高度显著高于其他各组(P<0.05),中、高剂量组十二指肠隐窝深度显著低于空白组(P<0.05),高剂量组十二指肠绒毛高度/隐窝深度显著高于其他各组(P<0.05)。中和高剂量组空肠绒毛高度显著高于空白组(P<0.05),高剂量组空肠绒毛高度/隐窝深度显著高于空白组(P<0.05)。低、中和高剂量组回肠隐窝深度显著低于空白组(P<0.05),低和高剂量组回肠绒毛高度/隐窝深度显著高于空白组(P<0.05)。中剂量组盲肠隐窝深度显著低于其他各组(P<0.05),中剂量组盲肠绒毛高度/隐窝深度显著高于其他各组(P<0.05)。综上所述,饲粮中添加葡萄糖三丁酸酯可以提高肉鸡的生长性能、屠宰性能,并改善肠道黏膜形态,促进营养物质的吸收。

This experiment was conducted to study the effects of glucose tributyrate on growth performance,slaughter performance,serum biochemical indexes and intestinal mucosal morphology of broilers.One hundred and sixty 10-day-old healthy male Arbor Acres(AA)broilers were randomly divided into 4 groups with 4 replicates per group and 10 broilers per replicate.Broilers in the blank group were fed a basal diet,and the others in low,medium and high dose groups were fed the basal diet supplemented with 0.05%,0.10%and 0.20%glucose tributyrate,respectively.The experiment lasted for 32 days.The results showed as follows:1)during15 to 42 days of age,the average daily feed intake and average daily gain of low,medium and high dose groups were significantly higher than those of the blank group(P<0.05),and the ratio of feed to gain of low,medium and high dose groups was significantly lower than that of blank group(P<0.05).2)At 28 days of age,the leg muscle percentage of high dose group was significantly higher than that of other groups(P<0.05);at 42 days of age,the leg muscle percentage of low,medium and high dose groups was significantly higher than that of the blank group(P<0.05).3)At 28 days of age,the serum total protein(TP)content of medium and high dose groups was significantly higher than that of the blank group(P<0.05),and the serum albumin(ALB)content of low,medium and high dose groups was significantly higher than that of the blank group(P<0.05);at 42 days of age,the contents of TP and ALB in serum of medium and high dose groups were significantly higher than those of the blank group(P<0.05),the serum alanine aminotransferase activity of low,medium and high dose groups was significantly lower than that of the blank group(P<0.05),and the serum urea nitrogen content of medium dose group was significantly lower than that of the blank group(P<0.05).4)The duodenal villus height of high dose group was significantly higher than that of other groups(P<0.05),the duodenal crypt depth of medium and high dose groups was significantly lower than that of the blank group(P<0.05),and the duodenal villus height/crypt depth of high dose group was significantly higher than that of other groups(P<0.05).The jejunal villus height of medium and high dose groups was significantly higher than that of the blank group(P<0.05),and the jejunal villus height/crypt depth of high dose group was significantly higher than that of the blank group(P<0.05).The ileum crypt depth of low,medium and high dose groups was significantly lower than that of the blank group(P<0.05),and the ileum villus height/crypt depth of low and high dose groups was significantly higher than that of the blank group(P<0.05).The cecum crypt depth of medium dose group was significantly lower than that of other groups(P<0.05),and the cecum villus height/crypt depth of medium dose group was significantly higher than that of other groups(P<0.05).In summary,the addition of glucose tributyrate to the diet can improve the growth performance and slaughter performance of broilers,improve intestinal mucosal morphology and promote the nutrient absorption.