低能饲粮中添加复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度的影响  

Effects of LowEnergy Diet Supplemented with Complex Enzyme on Growth Performance,Intestinal Mucosa Morphology and Digesta Viscosity of Broilers

作　　者：汤海鸥[1,2] 高秀华[1,2] 姚斌[1] 李学军[2] 王晓睿[2] 

机构地区：[1]中国农业科学院饲料研究所,北京100081 [2]生物饲料开发国家工程研究中心,北京100081

出　　处：《动物营养学报》2014年第1期190-196,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：不同养殖模式;不同类型日粮的平衡供给技术研究与示范(2011BAD26B01)

摘　　要：本试验旨在研究低能饲粮中添加复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度的影响。选取320只1日龄爱拔益加肉鸡,随机分为4组,每组8个重复,每个重复10只。Ⅰ组为正对照组,饲喂玉米-豆粕型常规饲粮;Ⅱ组为负对照组,饲粮配方原料中增加杂粕和麦类用量,降低210 kJ/kg代谢能;Ⅲ、Ⅳ组为常规剂量加酶组和高剂量加酶组,分别在负对照组饲粮基础上添加0.02%和0.20%复合酶。试验期42 d。结果表明,Ⅱ组料重比极显著高于Ⅳ组(P<0.01),Ⅰ、Ⅲ组料重比显著低于Ⅱ组(P<0.05);Ⅰ、Ⅳ组绒毛高度极显著高于其他2组(P<0.01),Ⅱ组绒毛高度显著低于Ⅲ组(P<0.05);Ⅱ组隐窝深度极显著高于其他3组(P<0.01),Ⅳ组隐窝深度显著低于Ⅰ、Ⅲ组(P<0.05);Ⅳ组绒毛高度/隐窝深度(V/C)值极显著高于其他3组(P<0.01),Ⅱ组V/C值显著低于Ⅰ、Ⅲ组(P<0.05);各组之间黏膜厚度无显著差异(P>0.05);Ⅳ组食糜黏度显著低于Ⅱ组(P<0.05)。由此可见,饲粮中添加0.02%和0.20%复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度均具有较好的改善作用;添加0.20%复合酶可进一步提高复合酶的应用效果。This experiment was conducted to investigate the effects of low energy diet supplemented with com- pound enzyme on growth performance, intestinal mucosa morphology and digesta viscosity of broilers. Three hundred and twenty one-day-old broilers were randomly assigned to four groups with eight replicates in each group and ten broilers in each replicate. The positive control group （group Ⅰ ） was fed a corn-soybean meal normal diet. The diet of negative control group （group Ⅱ ） was reduced by 210 kJ/kg metabolizable energy, and the content of miscellaneous meal and wheat was increased in this group. The normal additive dosage of enzyme group （ group Ⅲ ） and high additive dosage of enzyme group （ group Ⅳ ） were fed the negative control group diet supplemented with 0.02 % and 0.20% compound enzyme, respectively. The experiment lasted for 42 days. The results showed that the ratio of feed to gain in group Ⅱ was significantly higher than that in group Ⅳ （ P 〈0.01 ） ; the ratio of feed to gain in groups Ⅰ and Ⅲ was significantly lower than that in group Ⅱ （ P 〈 0.05）. The villus height in groups Ⅰ and Ⅳ was significantly higher than that in other two groups （ P 〈 0.01 ）, and the villus height in group Ⅱ was significantly lower than that in group Ⅱ （ P 〈0.05 ）. The crypt depth in group Ⅱ was significantly higher than that in other three groups （ P 〈 0.01 ）, and the crypt depth in group Ⅳ was significantly lower than that in groups Ⅰ and Ⅲ （ P 〈 0.05 ）. The villus height to crypt depth （V/C） in group Ⅳ was significantly higher than that in other three groups （P 〈0.05）, and the V/C in group Ⅱ was significantly lower than that in groups Ⅰ and Ⅱ （ P 〈 0.05）. There was no significant difference in mucosa thickness among all groups （ P 〉 0.05 ）. The digesta viscosity in group IV was significantly lower than that in group II （P 〈 0.05 ）. In conclusion, the diet supplemented with 0.02 % and 0.20 % complex enzy

关 键 词：肉鸡 复合酶 生长性能 肠道黏膜形态 食糜黏度 

分 类 号：S816.7[农业科学—饲料科学]