日粮中苜蓿、黑麦草和小麦麸含量对仔鹅生产性能的影响

Study on Effect of Alfalfa, Ryegrass and Wheat Middlings Contentsin Dietary on Performance in Goslings

试验选用216只4～10周龄的扬州鹅为试验素材,随机分为6组,每组36只。日粮中黑麦草、苜蓿和小麦麸配比后所占比例分别为14%、16%、18%、20%、22%和24%的6种试验日粮。比较不同日粮对10周龄仔鹅生长发育的影响。结果表明:试验鹅4周龄前各处理之间体重无显著差异(P>0.05),但随着日龄的增长,各处理组体重之间的差异逐渐显出,18%组生长最佳。从纤维组分的不同比例看,NDF/ADF值在2.39￣2.52之间,试验鹅的生长性能强于其它组。在仔鹅生长发育过程中,摄食的营养物质首先满足增重的需要,再满足羽毛生长的需要。另外,供试鹅的采食量在第6周时已基本确定,且以后基本维持这个采食量到试验结束即第10周龄。各组第7、第10周龄屠宰性能的各项指标之间差异不显著(P>0.05),第5、6组各项指标有低于其它组的趋势。

Two hundred and sixteen YangZhou goslings of 4-10 weeks were used as experimental animals, which were allocated at random to 6 groups of thirty-six each. The ryegrass, alfalfa and wheat middlings contents in treatments were 14%, 16%, 18%, 20%, 22% and 24% separately. The trial compared the effects of different dietary on performance. The results indicated that： During the experimental period, there was no significant difference on the body weight between six groups before 4 weekold （P〉0.05）. With the increasing day, the difference was obvious slowly, 18% content in the dietary can promote the growth of goslings. Seen from the different proportions of fiber components, the performance of goslings was stronger when the proportion of NDF and ADF was 2.39 to 2.52. In the growth, the intake nutriment satisfied body weight gain firstly, then fulfill the feather growth. In addition, food intake was confined basically at 6 weeks age, and maintained the tendency to the final experiment. There was no significant difference in slaughter indices between 7 week-old and 10 week-old （P〉0.05）,but the indices of group 5 and 6 were lower than that of the other groups.