摘要
选取48周龄的尼克红商品蛋鸡720只,随机分为5组(A-E),每组4次重复,每重复36只鸡,A 组饲喂玉米-豆粕型日粮,不加复合酶制剂;另外4组(B-E)饲喂玉米-杂粕型(棉粕、菜粕和花生粕)日粮(依次分别添加0％,0．05％,0．10％和0．15％复合酶制剂),研究不同水平复合酶制剂对采食玉米-杂粕型日粮蛋鸡的生产性能、蛋品质等常规指标及养分利用率的影响,正试期63 d。结果表明,在蛋鸡玉米-杂粕型日粮中添加复合酶制剂,可降低饲料生产成本,提高养殖经济效益;0．10％复合酶制剂的添加水平效果最佳,与不添加的B组相比,产蛋率极显著提高(P<0．01);平均蛋重显著提高(P<0．05);料蛋比显著降低(P<0．05);能量利用率极显著提高(P< 0．01);粗蛋白表观利用率显著提高(P<0．05)。
The study was conducted to evaluated the effect of enzyme mixture （EX） on egg perfor mance ,egg quality and nutrient utilization of layers in corn-cottonseed ,cottonseed ,rapeseed and peanutseed based diets. 720 Nike laying hens were randomly assigned to five groups （A,B,C,D,E）,each of 4 repli cates and 36 hens per replicate. Group A was fed core-soybean based diet,another four treated groups were fed corn-, cottonseed , rapeseed and peanut-seed based diet with different level EX, The supplementation levels were 0%,0.05% ,0.10%,0. 15% ,respectively,to group B,C,D and E. The trial lasted 8 weeks with the following results ;Group D was the best with higher laying rate （P〈0. 01） ,higher average egg weight （P〈0.05） and lower feed conversation ratio （P〈0.05） than group B,and Group D increased EUR （P〈0. 01） with higher apparent protein digestibility （APE）.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2006年第3期37-41,共5页
Journal of Northwest A&F University(Natural Science Edition)
基金
陕西省科技攻关项目(2001K03-G5)
关键词
复合酶制剂
蛋鸡
生产性能
蛋品质
养分利用率
enzyme mixture
layers
performance
egg quality
utilization of nutrients
