不同来源木聚糖酶及其组合对肉仔鸡生长性能和养分代谢率的影响  

Combination of Different Sources of Xylanase on Growth Performance and Nutrient Metabolism Rate of Broilers

作　　者：吕秋凤[1] 宁志利[1] 王振勇[2] 张民 管秀界 曹敏建[1] 

机构地区：[1]沈阳农业大学,沈阳110866 [2]沈阳禾丰生物技术公司,沈阳110179 [3]上海尤特尔生化有限公司,上海201201

出　　处：《沈阳农业大学学报》2010年第3期350-353,共4页Journal of Shenyang Agricultural University

摘　　要：为揭示不同来源和特性的木聚糖酶对饲喂玉米小麦型基础日粮的AA＋肉鸡生长性能的影响,在玉米小麦基础日粮中添加不同来源的木聚糖酶：真菌酸性木聚糖酶、真菌中性木聚糖酶和细菌中性木聚糖酶及其组合酶,酶活均为12000IU·g^-1,组合酶为3种酶各4000IU·g^-1。试验将1050只1日龄AA＋肉鸡随机分成为7组,每组5个重复,每个重复30羽,试验期42d。结果表明：木聚糖酶能提高1～21日龄、22～42日龄肉仔鸡的日增重（p〉0.05）,显著降低1～21日龄、22～42日龄的料重比,分别为8.89%和11.90（p〈0.05）,显著提高粗脂肪6.78%（p〈0.05）、钙、磷的表观代谢率分别28.66%和30.99%（p〈0.05）,组合酶组好于单体酶组。In this experiment,to reveal the effects of different sources and characteristics of xylanase on maize and wheat-based diets fed the AA ＋ broiler growth performance.In the maize and wheat-based diets supplemented with three different sources of xylanase,fungi acid-stable xylanase,fungal and bacterial xylanase neutral neutral xylanase and combinations thereof,activity of enzyme were 12000IU·g^-1 combination of enzymes for the three enzymes of 4000IU·g^-1.Tests will be 1050 a day-old AA ＋ broilers were randomly divided into seven groups,each with five repeat,repeat 30 for each feather a trial period of 42 days.The results showed that xylanase could improve the 1-21 day-old,22-42-day-old broilers of the average daily gain（p〉0.05）,a significant reduction in 1-21 day-old,22-42-day-old feed conversion ratio 8.89%（p〉0.05） and 11.90%（p〉0.05）,significantly increased crude fat 6.78%（p 0.05）,calcium,phosphorus apparent metabolic rate 28.66%（p 0.05） and 30.99%（p〉0.05）.Combination of enzymatic group was better than single enzyme group.

关 键 词：木聚糖酶 肉鸡 生长性能 养分表观代谢率 

分 类 号：S828.5[农业科学—畜牧学]