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This thesis mainly optimize the Trichoderma viride RS30 (Trichoderma RS30) producing xylanase culture conditions. And completed the xylanase and cellulase degradation of corn straw and composite containing xylanase enzyme application research of laying hens production performance. For xylanase production by optimizing test of optimum condition is: temperature 28 ℃, medium pH value is 5.0, the kind of age is 96 h, the quantity of 1 x 107 spores, table speed 150 r/min, 144 h of incubation time. By xylanase and cellulase degradation of corn straw, determine the conditions of enzymatic hydrolysis and effect is: in the enzyme solution system pH4.5 50 ℃, temperature, solid-liquid ratio is 1:15, table speed is 100 r/min, xylanase and cellulase 60 u / 120 u/mL, mL, 24 h, the degradation of corn straw degradation rate was 12.2%. Laying hens was added in the feed compound enzymes were not significantly change the egg quality, use of 0.2% compound enzyme preparation can effectively improve the production performance of laying hens, average rate increased by 2.53%, egg production increased by 3.56%, and egg ratio fell by 6.36%, increased profitability by 16.23%.
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