作 者：
孙皓;戴炜;周响艳;战晓燕;张涛;叶慧;董泽敏;冯定远
关键词：
复合酶;黄羽肉仔鸡;生长性能;养分代谢率
摘 要：
试验旨在研究两种非淀粉多糖酶复合酶制剂对黄羽肉仔鸡生长性能、养分代谢率和盲肠微生物的影响,探讨其对肉仔鸡的营养效应。选择1日龄健康黄羽肉仔鸡1 440只,随机分成4组,每组6个重复,每个重复60只,分别饲喂常规饲粮(正对照组)、低能量饲粮(负对照组)、低能量饲粮+复合酶A(复合酶A组)、低能量饲粮+复合酶B(复合酶B组),饲养试验时间为21 d。结果显示:(1)各组间平均日采食量差异不显著(P>0.05),复合酶A组平均日增重、料重比与正对照组差异不显著(P>0.05),而负对照组、复合酶B组料重比显著高于正对照组(P<0.05);(2)复合酶A、B组心脏、肌胃重量以及心脏指数、肌胃指数与对照组相比,分别提高了11.83%~24.03%、6.14%~18.52%、17.74%~25.81%、12.47%~19.54%。(3)复合酶A、B组干物质表观消化率、粗蛋白质真代谢率和能量代谢率与负对照组相比,分别提高3.93%、2.30%(P>0.05);47.63%(P<0.01)、21.34%(P>0.05)和2.75%、1.55%(P>0.05)。(4)添加复合酶A、B后,变性梯度凝胶电泳(denatured gradient gel electrophoresis,DGGE)分析结果显示,加酶组比对照组盲肠微生物种类显著提高了6.43%%~14.59%(P<0.05)。说明添加两种复合酶,与负对照组相比有提高黄羽肉仔鸡日增重、降低料重比的趋势,两种复合酶的添加均能显著提高心脏、肌胃重量及指数,同时也增加了盲肠一些优势菌群的种类。
译 名：
Effects of NSP enzymes on growth performance, nutrient utilization, and cecum microbial diversity of yellow-feathered broilers
作 者：
Sun Hao;Dai Wei;Zhou Xiangyan;Zhan Xiaoyan;Zhang Tao;Ye Hui;Dong Zemin;Feng Dingyuan;
单 位：
Sun Hao%Dai Wei%Zhou Xiangyan%Zhan Xiaoyan%Zhang Tao%Ye Hui%Dong Zemin%Feng Dingyuan
关键词：
compound enzyme;;yellow-feathered broilers;;growth performance;;nutrient metabolic rate
摘 要：
Influences of wheat fodder added with two different compound enzyme preparations on thegrowth performance,nutrient metabolic rate and cecum microbial activity of the yellow-feathered broil-ers was studied using experimental method, and the nutrition effects of compound enzyme preparationon the broilers were discussed. The experiment was designed by single factor random allocation. One-day old healthy yellow-feathered broilers(male) with 1 440 feathers were randomly divided into fourtreatment groups, i.e. positive control group, negative control group, negative control with compound en-zyme A, and negative control with compound enzyme B.The feeding experiment lasts for 21 days. Theresults showed that:(1) The average daily feed in-take of each group was not significantly different(P>0.05), but the feed conversion ratio of nega-tive control group and compound enzyme Bgroup were significantly higher than that of thepositive control group(P<0.05), while the dailygain and the feed conversion ratio of compoundenzyme A were not significantly different from those of the positive control(P>0.05);(2) The cardiac and muscular stomach mass, cardiac index, mus-cular stomach index of the compound enzyme group were different from those of the control group,which respectively increase by 11.83% ~24.03%, 6.14% ~18.52%, 17.74% ~25.81% and 12.47% ~19.54%.(3) The apparent digestibility of dry matter, the true metabolic rate of crude protein and ener-gy metabolism of the compound enzyme A group and compound enzyme B group respectively increas-eed by 3.93%, 2.30%(P>0.05); 47.63%(P<0.01), 21.34%(P>0.05)and 2.75%, 1.55%(P>0.05)com-pared with that of the negative control group.(4) After adding compound enzyme, the species of cecummicrobe in the enzyme group increaseed by 6.43%~14.59%(P<0.05) compared with that of the controlgroup. The results showed that adding compound enzyme A and B had the tendency of increasing aver-age daily feed intake and reduced the feed conversion ratio, compared with the negative control. Theaddition of two compound enzymes could significantly increase the weight and index of the cardiac andmuscular stomach,and also increased some species of dominant bacterial community in cecum.
