摘要
试验在肉鸡玉米-豆粕型日粮中添加500U/kg植酸酶,研究植酸酶对肉鸡生长性能、养分利用率和骨骼指标的影响。选择1日龄AA肉仔鸡384只(公母鸡各192只)。按体重相近,性别各半的原则,随机分成4组,每组设6个重复,每个重复16只。Ⅰ组为不添加植酸酶的基础日粮组(对照组);Ⅱ、Ⅲ、Ⅳ组为日粮中添加500U/kg植酸酶分别替代0.09%、0.11%、0.13%的无机磷。试验分为试验前期(0～3周)和后期(4～6周)。结果表明:在肉鸡玉米-豆粕型日粮中添加植酸酶可提高日粮干物质、有机物、粗蛋白的利用率,但差异不显著(P>0.05);钙利用率提高了17.23%(前期)和22.86%(后期),差异达到显著水平(P<0.05);磷利用率提高了18.98%(前期)和20.73%(后期),差异显著(P<0.05)。肉鸡对饲料的能量利用率提高了1.94%(前期)和1.63%(后期),差异显著(P<0.05)。
The experiment was carried out to investigate the effects of 500 U/kg phytase in corn-soy- bean ration on the performance, nutrition utilization and bone index of broilers.384 broilers （192 Avian male and 192Avian female） of 1-day-old were divided into 4 groups randomly, each containing 6 repli- cates and 16 chickens per replicate （8 males and 8 females）. Group I, basic diets （control group）; group II, basic ration added 500 U/kg phytase to substitute for 0.09% inorganic phosphorus; group llI, basic ration added 500 U/kg phytase to substitute for 0.11% inorganic phosphorus; group IV, basic ration added 500 U/kg phytase to substitute for 0.13% inorganic phosphorus. This experiment was conducted in two periods, starter 0-21 and finisher 22-42 days. The results showed： The utilization rate of dry matter of plusing 500 U/kg phytase of corn-soybean ratio in broilers was significantly improved, the uti- lization rate of calcium was significantly improved 17.23%（prophase） and 22.86%（anaphase）（P〈0.05）; the utilization rate of phosphorus was improved 18.98%（prophase） and 20.73%（anaphase）（P〈0.05）; the uti- lization rate of energy was significantly improved 1.94%（prophase） and 1.63%（anaphase）（P〈0.05）
出处
《饲料工业》
北大核心
2009年第12期19-24,共6页
Feed Industry
基金
黑龙江省教育厅高职高专院校科研项目(11515101)
