新型复合酶在肉鸡饲料中的应用

Application of a Novel Compound Enzyme in Broiler Feed

为了降低麦糟中的非淀粉多糖抗营养因子,提高饲料的转化率,促进家禽对营养物质的吸收,作者研究了溢多酶和阿魏酸酯酶在不同的温度、酶解时间、阿魏酸酯酶添加量、麦糟水分质量分数及酶的添加方式等条件下麦糟的降解效果,以及酶解后的麦糟对对肉鸡生产性能的影响。结果表明:酶解时间2.5 d,操作温度40℃,水分质量分数50%,添加阿魏酸酯酶酶量为6.6-8.8 U/g麦糟,阿魏酸酯酶与溢多酶同时添加对麦糟酶解效果最好。将按不同方式酶解后的麦糟以7%的比例添加入肉鸡日粮中,与不加酶组对比,同时添加阿魏酸酯酶及溢多酶的实验组日增重提高4.37%(P>0.05),料肉比降低7.63%(P<0.01),阿魏酸酯酶与溢多酶能够显著促进肉鸡的生长。

In order to reduce non-starch polysaccharides antinutritional factors in brewers＇ spent grain,improve feed conversion rate and promote poultry＇s uptaking nutrients,the article studied into some factors,which contained operating temperature,enzymatic hydrolysis time,feruloyl esterase quantity,water content of spent grain,the way of adding enzyme,influence on the enzymatic hydrolyzing brewers＇ spent grain,and the effect of brewers＇ spent grain was treated by compound enzyme on broiler growth performance. The optimal conditions for enzymatic degradation of BSG were as follows：2.5 d of enzymatic degradation,40 ℃ operating temperature,50% water content, 6.6-8.8 U/g brewers＇ spent grain of feruloyl esterase＇s dose and simultaneous addition of two kinds of enzymes that made the best degradation of spent grain. Brewers＇ spent grain enzymatic hydrolyzed differently was added into broiler feed with the scale of 7%. Compared the control group ,which contained no enzyme,the feruloyl esterase and yiduoli enzyme group showed improvement of hroilers growth as daily gain was increased by 4.37% and the feed conversion ratio was reduced by7.63%.