Effects of Chinese Herbal Extract on Performance,Immune Function and Antioxidant Capacity of Highland Brown Laying Hens
The aim of this experiment was to study the effects of Chinese herbal extracts on performance,blood immune function and antioxidant properties of Highland brown laying hens.A total of 360 healthy 42-week-old Highland brown laying hens were randomly divided into 4 groups with 3 replicates per group and 30 laying hens per replicate.Samples in groups A,B and C were fed with 0.4%Chinese herbal extract compound Coptis Jiedu Powder HLJDS,Pulsatilla Pulsatilla Powder BTWS and Qingwen Decoction QWT on the basis of commercially available normal full price feed,and control group D was fed with the commercially available normal full price feed.The pre-test lasted for 7 days and the experiment lasted for 28 days.The results showed as follows.In terms of production performance,the laying rate of laying hens in group C was extremely significantly higher than that of control group D(P<0.01),and the laying rate of laying hens in group A was significantly higher than that of control group D(P<0.05).The feed to egg ratio of laying hens in groups A and C was significantly lower than that of control group D(P<0.01).There was no significant difference in average egg weight among all groups(P>0.05).The defective egg rate of laying hens in groups A and C was extremely significantly lower than that of control group D(P<0.01),and the defective egg rate of laying hens in group B was significantly lower than that of control group D(P<0.05).There was no dead culling chicken in group A and Group C during the whole experiment period,while the dead culling rate in control group D was 2.22%.In terms of egg quality,there were no significant differences in egg shape index,protein concentration index and yolk index in groups A,B,C and D(P>0.05),but the number of defective eggs in fecal eggs,bloodstained eggs,malformed eggs and soft preserved eggs in control group D was significantly higher than that of the other three groups,and there was a phenomenon of uneven egg color.In terms of immune function,the activity of lysozyme in blood of groups A and C was extremely significantly higher than that of control group D(P<0.01).Serum globulin of laying hens in group C was extremely significantly higher than that of control group D(P<0.01),and serum globulin of laying hens in group A was significantly higher than that of control group D(P<0.05).In terms of antioxidant performance,the T-SOD activity in blood of laying hens in groups A and C was significantly higher than that of control group D(P<0.01).The content of MDA in blood of laying hens in groups A and C was significantly lower than that of control group D(P<0.01).Dietary addition of HLJDS and QWT can improve the production performance of laying hens,reduce the defective egg rate and dead chickens to a certain extent,and improve the immune function and antioxidant properties of laying hens,which is conducive to improving the economic benefits of laying hens.
Chinese herbal extractHighland brown laying hensproduction performanceimmune functionantioxidant activity
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