Effect of Ligustrum lucidum on production performance, immunity and serum biochemical indices of hens at late laying stage.

To study the effects of Ligustrum lucidum(LL) on production performance,immunity and serum biochemical indexes of hens at late laying stage,one hundred and fifty 65-weeks Hyline brown hens were randomly allotted to 3 treatments with 5 replicates pens pretreatment and 10 birds per pen.The control group was fed a basal diet,the experimental groupⅠ,Ⅱ were fed the basal diet supplemented with 0.5%,1% LL,respectively.The experiment lasted 8 weeks.The results showed that feed-egg ratio of experimental groupⅠ,Ⅱ were significantly reduced (P0.05) compared with the control.Laying rate and average daily egg production of experimental group Ⅱ were significantly increased by 20.09% and 18.75% respectively (P0.05) compared with the control.Antibody titres to newcastle disease virus of experimental groupⅡ was significantly increased (P0.05) compared with the control.Lymphocyte transformation rate of experimental groupⅠ,Ⅱwere significantly increased by 49.85% and 50.83% respectively(P0.05) compared with control.The level of TC and LDL of experimental group Ⅰ,Ⅱ were significantly reduced (P0.05) compared with the control.The level of HDL of experimental group Ⅰ was significantly increased by 27.27% compared with the control.Basal diet supplemented with LL could increase performance,immunity and improved lipid metabolism of hens at late laying stage.