| 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63d。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）。 |
| 关键词: 复合酶制剂 蛋鸡 生产性能 蛋品质 养分利用率 |
| DOI： |
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| 基金项目:陕西省科技攻关项目（2001K03-G5） |
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| Application of enzyme addition in corn-cottonseed,rapeseed and peanut-seed based diet in Laying hens |
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| Abstract: |
| The study was conducted to evaluated the effect of enzyme mixture (EX) on egg performance,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 replicates 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). |
| Key words: enzyme mixture layers performance egg quality utilization of nutrients |
