THE CONTENT OF PENTOSAN IN WHEAT GRAIN AND EFFECTS OF XYLANASE SUPPLEMENTATION ON AME VALUES AND NUTRIENT DIGESTIBILITY OF COCKS

This study include two experiments. In experiment 1,the content of pentosan in 9 wheat cultivars was determined during 1999-2000.The average content of pentosan in different cultivars varied from 6.25% to 8.23%. Significant differences were found in pentosan content for different cultivars. In experiment 2 ,the effects of supplementation of an compound enzyme,which mainly include xylanase,on AME and nutrient digestibility of the 2 wheat cultivars were studied.The AME values of Neixiang188 and Yumai 49 were improved 7.07% (P0.01) and 6.53% (P0.05)significantly by xylanase, respectively. Xylanase increased the dry matter digestibility by 7.10%(P0.05) and 7.67%(P0.01) and the organism matter digestibility by 6.07%(P0.05) and 7.23%(P0.01), respectively.