Dietary supplementation of bacillus subtilis and inulin on laying performance,egg quality and intestinal morphology of laying hens in late production phase
ZHAO Shuxian;JIA Juntao;ZHAO Yufei;Inner Mongolia Agricultural University Vocational and Technical College;
Four hundred and eighty Hyline Brown laying hens aged 63 w were randomly allotted to 4 groups,which had 5 replicates of 24 hens. There were 4 diets in this experiment,namely,the control group fed with the corn-soybean meal diets,group 1 fed with the control diet addition of 1 g/kg bacillus subtilis,group 2 fed with the control diet addition of 1 g/kg inulin,while group 3 fed with the control group addition of 0.5 g/kg bacillus subtilis and 0.5 g/kg inulin. The experiment last 13 w,including 1 week's adaption period. Results showed that the treatment groups improved the egg weight and feed egg ratio compared with the control group(P 0.05). The egg thickness,density and egg mass in the control group were the lowest(P 0.05),while the broken egg rate was the highest(P 0.05). The calcium content in fences of the control group was the highest(P 0.05),while the calcium retention was the lowest(P 0.05). Compared with the control group,the pH values in fences,intestine and ileum contents were the lowest(P 0.05). The control group had highest contents of bacillus coli or clostridium(P 0.05),and lowest contents of lactobacillus or bifidobacterium in intestine and ileum among the groups(P 0.05). In conclusion,we found that supplementation of bacillus subtilis in diets for hens in late production phase can increased the laying performance,while supplementation of inulin can improve egg quality.
【CateGory Index】： S831.5