关键词: 丁酸钠, 肉鸭, 生产性能, 粪便, 排放量

Abstract: Effects of addition of sodium butyrate into the basic ration of broiler duck on growth performance of the duck and reduction of emission of pollutants with its faeces have been studied.Seven hundred of one year-old cherry broiler ducks were randomly divided into four treatment groups and each group into six replicates.Control group I was fed with basal ration,treatment groups II,III and IV were fed with basic ration supplemented with sodium butyrate at 350,700 and 1 050 mg·kg^-1,respectively.Resaults show that 1)the feed/gain ratio in the treatment groups decreased significantly and was 4.95%,6.71% and 4.59%(P<0.05)lower than in the control,respectively.The average daily gain of Treatment Group III and IV was 9.16% and 9.47%(P<0.05) higher than of the control group in the first three weeks.2)Addition of sodium butyrate significantly reduced the contents of TN,TP,ammonia nitrogen,organic matter,Cu and Zn in duck manure(P<0.05),by 4.36%,13.83%,41.81%,5.45%,2.32% and 13.41%,respectively,in Treatment Group II,by 6.15%,17.36%,59.98%,4.32%,21.69% and 18.96%,respectively,in Treatment Group III,and by 2.68%,10.66%,43.61%,3.76%,40.98% and 14.88%,respectively,in Treatment Group IV.3) Although there was no significant differences between different rates of sodium butyrate in effect on pollutant emission with daily faeces excretion,they all tended to decrease.They reduced pollutants emissions in duck faeces significantly(P<0.05).Treatment Group III is the best in reducing emissions of TN,TP,ammonia nitrogen and organic matter and Treatment Group Ⅳ in reducing emission of Cu.As it can be seen,by added 700 mg·kg^-1 into basic ration for ducklings,sodium butyrate may help achieve the best production performance and pollutants emission reduction.

Key words: sodium butyrate, broiler duck, growth performance, manure, emission