| 不同植酸酶对饲喂低磷日粮肉鸡生长性能及粪N、P排泄的影响 |
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| 引用本文： | 黄兴国,王超,杨承剑,刘文敏,方热军.不同植酸酶对饲喂低磷日粮肉鸡生长性能及粪N、P排泄的影响[J].中国畜牧兽医,2008,35(7):25-28. |
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| 作者姓名： | 黄兴国 王超 杨承剑 刘文敏 方热军 |
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| 作者单位： | 湖南农业大学动物营养研究所，长沙 410128 |
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| 基金项目： | 湖南省科技重大专项
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湖南省教育厅青年基金项目
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湖南农业大学引进人才项目 |
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| 摘 要： | 采用306只艾维茵肉鸡研究低磷日粮中添加两种不同植酸酶对肉鸡生产性能、养分利用率及氮、磷排泄的影响。试验共分3个处理组，即对照组、试验Ⅰ组和试验Ⅱ组，每个处理组3个重复，每个重复34只鸡。对照组饲喂正常磷水平的日粮；试验Ⅰ组饲喂低磷＋植酸酶Ⅰ的日粮；试验Ⅱ组饲喂低磷＋植酸酶Ⅱ的日粮。试验结果表明，添加植酸酶替代日粮中部分无机磷，肉鸡的日增重和日采食量与对照组相比降低，但差异不显著（P＞0.05）；提高了肉鸡的存活率（P＜0.05）和钙、磷利用率（P＜0.05）；同时氮利用率有一定程度改善（P＞0.05），显著减少了氮、磷的排泄量（P＜0.05）。添加植酸酶Ⅰ与添加植酸酶Ⅱ相比，肉鸡的日增重与日采食量提高（P＜0.05），氮的排泄量显著降低（P＜0.05），磷的排泄量没有差异。
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| 关 键 词： | 肉鸡 植酸酶 磷 生长性能 养分利用率 养分排泄 |
Effects of Different Phytases on Growth Performance and Excretion of Feces N and P for Broilers Fed Low-P Diets |
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| HUANG Xing-guo,WANG Chao,YANG Cheng-jian,LIU Wen-min,FANG Re-jun.Effects of Different Phytases on Growth Performance and Excretion of Feces N and P for Broilers Fed Low-P Diets[J].China Animal Husbandry & Veterinary Medicine,2008,35(7):25-28. |
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| Authors: | HUANG Xing-guo WANG Chao YANG Cheng-jian LIU Wen-min FANG Re-jun |
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| Institution: | Institute of Animal Nutrition of Hunan Agricultural University, Changsha 410128,China |
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| Abstract: | In the experiment 306 newly hatched Avian broilers were conducted to study the effects of two kinds of phytase substitute inorganic phosphorus in diet on the growth performance, nutrient availability and excretion of feces P and N. There were 3 treatments with control group、experiment groupⅠ、experiment groupⅡ, and normal diet was fed to control group, low P diet adding phytaseⅠwas fed to experiment groupⅠ, low P with adding phytaseⅡwas fed to experiment groupⅡ. Each treatment had 3 replicates with 34 broilers per pen. The results indicated that ADG and ADFI of experiment group dietary supplementation with phytase were decreased（P＞0.05）; survival rates of broilers and the availability of Ca and P were increased significantly(P<0.05); the utilization of N was improved (P>0.05); and the excretion of N and P for broilers was decreased(P<0.05). the phytase Ⅰ was superior to phytase Ⅱ, diet added with phytase Ⅰ had significantly improved ADG and ADFI (P<0.05),and decreased the excretion of N (P<0.05)，but excretion P had no significant between two groups. |
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| Keywords: | broiler phytase phosphorus growth performance nutrient availability excretion of nutrients |
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