The Effect Of Sodium Butyrate On The Growth Performance And Intestinal Mucous Structure Of Fresh Water Fish

In the first experiments lasted 52 days for the fish tilapia,the basic diet of the 4 groups were as follows:no Sodium butyrate,500 g.t^-1,1000 g.t^-1 and 1500 g.t^-1 of Sodium butyrate.The monosexual fish Oreochromis niloticus(average body weight of was about 9.2g) were randomly divided 4 groups(90 fish per group).The results showed that,compared with the control group,the feed efficiency of the groups supplemented with 500 g.t^-1,1000 g.t^-1,1500 g.t^-1 Sodium butyrate were increased by 25.79%,5.95%and 19.84%respectively;the body weight were increased by 26.43%,12.19%and 29.11%respectively;the growth rate were increased by 18.4%,8.8 %and 20.0%respectively;the protein efficiency were increased by 25.8%,13.3% and 27.6%respectively.There were no significant difference of relative fatness,and organ/body ratio among the groups.In the secondary experiment,360 fish Cyprinus carp(average body weight of was about 15-20g) were randomly divided 4 groups(30 fish per group,each group have 3 repetition):no Sodium butyrate,500 g.t^-1,1000 g.t^-1 and 1500 g.t^-1 of Sodium butyrate.The experiments lasted 60 days for the fish Cyprinus carp.The results show that the body weight of the groups supplemented with 500g.t^-1,1000g.t^-1,1500g.t^-1 Sodium Butyrate were increased by 3.54%,4.93%and 4.15%compared with the control group respectively;the growth rates were increased by 2.20%,6.10%and 2.20%respectively;the protein efficiency of the trial group was increased 2.47%, 4.54%and 4.55%respectively.But there were no significant difference of body weight gain,growth rate,protein efficiency and feed efficiency among Sodiaum butyrate groups.Meanwhile,there were no significant difference of relative organ and body ratio among the each groups.After 60d,the structure of mucous epiyhelium were observed and the height,width of Mid-gut Villus and Submucous muscle layer depth of mucous epiyhelium was measured.The results show that:the height,width of Mid-gut Villus and Submucous muscle layer of mucous epithelium of the Sodiaum butyrate groups were significantly larger than that of control group.The feeding results suggested that adding Sodium butyrate into basal diets increase feed utilization and growth performance of the fish significantly.