CAJ | 학술논문

研究鲜料中添加植酸酶水平对生长发育期水貂氮、磷利用及生长发育性能的影响。配制Ⅰ～Ⅳ组日粮，Ⅰ组为对照组（基础日粮），Ⅱ～Ⅳ组在基础日粮中分别添加450IU/kg、900IU/kg、4500IU/kg的植酸酶，进行各组日粮干物质、蛋白质、脂肪、钙、磷消化代谢试验和生长发育期饲养试验。结果表明，水貂鲜料添加植酸酶可显著提高干物质、脂肪、粗蛋白、P消化率及N代谢率（ P＜0.01），N、P环境排放量降低极显著（ P＜0.01）；可显著提高其体增重和平均日增重（ P＜0.05），其中添加900IU/kg的Ⅳ组生长发育性能最好。
연구선료중첨가식산매수평대생장발육기수초담、린이용급생장발육성능적영향。배제Ⅰ～Ⅳ조일량，Ⅰ조위대조조（기출일량），Ⅱ～Ⅳ조재기출일량중분별첨가450IU/kg、900IU/kg、4500IU/kg적식산매，진행각조일량간물질、단백질、지방、개、린소화대사시험화생장발육기사양시험。결과표명，수초선료첨가식산매가현저제고간물질、지방、조단백、P소화솔급N대사솔（ P＜0.01），N、P배경배방량강저겁현저（ P＜0.01）；가현저제고기체증중화평균일증중（ P＜0.05），기중첨가900IU/kg적Ⅳ조생장발육성능최호。
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 .