特产研究Issue(3)：18-22,5.
植酸酶对水貂氮、磷等营养物质利用及生长发育的影响
Effects of Microbial Phytase Levels on Availability of Nitrogen and Phosphorus Utilized and Performance in Growing Minks
摘要
Abstract
Effects of microbial phytase levels on the availabitility of nutriments and growth performance in Growing Mink were studied .Sixty black male minks were randomly divided into 4 groups ,15 minks per each .The control was fed conventional fresh diet ,the testing groups were applied phytase ,respectively ,phytase 450IU/kg (Ⅱ) ,900IU/kg (Ⅲ) and 4 500IU/kg (Ⅳ) .The results showed that there were significant dif-ference among groups ,the values of DMD、CPD、EED、PD were significant higher than the control ( P<0.01 or P<0.05) ,phytase groups were the highest value among groups .The Ca digestibility of Ⅱ 、Ⅲ 、Ⅳ groups were higher than group Ⅰ ,but the difference are not significant ( P>0.05) .There was clearly trend that phytase could significantly reduce the nitrogen and phosphorus excretion of growing minks ( P<0.01) ,and increase dietary nitrogen metablic rates in minks ,the 900IU/kg phytase was the best in all groups .There were a significantly increase in the in-dex of body weight gain and average daily gain the groups of phytase than control group ( P<0.05) .The results showed that it could significant-ly improve the growth performance and availabitility of DM、CP、EE、Ca、P ,applied 900IU/kg of phytase during growing period in mink diets .关键词
植酸酶/水貂/氮/磷利用/生长发育性能Key words
microbial phytase/mink/availabitility of Nitrogen and Phosphous/performance分类
农业科技引用本文复制引用
王凯英,徐超,鲍坤,刘晗璐,李光玉,纪银玲..植酸酶对水貂氮、磷等营养物质利用及生长发育的影响[J].特产研究,2013,(3):18-22,5.基金项目
国家公益性行业（农业）科研专项（200903014）；吉林省科技发展计划重点项目 （）
