Abstract: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 broilers growth as daily gain was increased by 4.37% and the feed conversion ratio was reduced by 7.63%.
