摘要
将240只肉仔鸡按饲养试验随机分成四组,每组设三个重复,每个重复20只。Ⅰ组为不添加植酸酶的基础日粮对照组;Ⅱ、Ⅲ、Ⅳ组为试验组,每千克基础日粮添加500 U植酸酶分别替代日粮中0.09%、0.11%和0.13%无机磷。试验按0～3周龄和4～6周龄两个阶段进行。结果表明：在肉仔鸡＂玉米-豆粕＂型日粮中添加0.01%的植酸酶（活性为5000U/g）替代日粮中0.12%的钙和0.11%的磷可显著提高鸡只的生长性能。
240 broilers were divided into 4 groups randomly,each containing 3 replicates and 20 chickens per replicate.Group I was fed basic diets（control group）;group II,basic diets plus 500U/kg phytase substitute 0.09% abio-phosphorus;group III,basic diets plus 500 U/kg phytase substitute 0.11% abio-phosphorus;and group IV,basic diets plus 500 U/kg phytase substitute 0.13% abio-phosphorus.This experiment was conducted in two periods,starter 0~21 and finisher 22～42 days.The results showed that corn-soybean diet plus 500U/kg phytase substitute 0. 12% calcium and 0. 11%abio-phosphorus can signifi-cantly increase the growth performance and gain optimal economic performance.
出处
《家畜生态学报》
2009年第6期86-89,共4页
Journal of Domestic Animal Ecology
基金
黑龙江省教育厅高职高专院校科研项目(11515101)
关键词
植酸酶
钙
磷
利用率
肉鸡
phytase
calcium
phosphorus
utilization rate
broiler
