0.05).During 22 to 42 d, compared with W group, the F /G in W+E group was significantly decreased (P<0.05), and the ADG tended to increase (0.05
0.05).2) At days 14, 21, 28, 35 and 42, the ammonia content in excreta in C group and C+E group was significantly higher than that in W group and W+E group (P<0.01); at day 21, the ammonia content in excreta in C+E group was significantly lower than that in C group (P<0.01), and there was no significant difference in ammonia content in excreta between W group and W+E group (P>0.05).3) At days 21, 28, 35 and 42, the uric acid content in excreta in C group and C+E group was significantly higher than that in W group and W+E group (P<0.01), and there was no significant difference in uric acid content in excreta between W group and W+E group and between C group and C+E group (P>0.05).4) At days 14, 21, 28, 35 and 42, the urea content in excreta in C group and C+E group tended to increase (P>0.05), and except days 14 and 35, there was no significant difference in urea content between W group and W+E group and between C group and C+E group (P>0.05).In conclusion, the corn-soybean diet and wheat-soybean diet with NSP complex enzyme can improve the performance of broilers; the wheat-soybean diet with NSP complex enzyme can replace corn-soybean diet , and the performance can achieve corn-soybean diet level.The ammonia, uric acid and urea contents in excreta of broilers fed cornsoybean diet are higher than those of broilers fed wheat-soybean diet.The wheat-soybean diet with NSP complex enzyme can decrease the ammonia content in excreta.
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;
中国农业科学院北京畜牧兽医研究所;
动物营养学国家重点实验室;
北京 100193;