Effects Of Compound Chinese Herbal Additives On Production Performance And Lipid Metabolism Of No-Ma Chicken

The experiment was conducted to explore the effects of compound Chinese herbal medicines on the production performance,muscle quality and lipid metabolism of No-Ma chickens.In order to provide an important theoretical basis and scientific reference for further research on antibiotic-free breeding of local breed chickens.192 24-week-old healthy NoMa chickens with similar body weight were randomly divided into 4 groups,with 6replicates in each group and 8 chickens in each replicate.The control group was fed the basal diet.The experimental groups Ⅰ,Ⅱ and Ⅲ were supplemented with 0.5%,1.0% and 1.5%compound Chinese herbal medicine additives(red dates,black sesame,wolfberry,Chuanxiong,Poria,Chinese yam,Angelica,Codonopsis,Astragalus,Shouwu).The experimental pre-feeding period 2 weeks,8 weeks of normal feeding period.The test results are as follows:1.Compared with the control group,group II significantly increased the average daily feed intake of No-Ma chickens(P < 0.05).Groups I and II significantly increased the egg production rate of No-Ma chickens(P < 0.05).Adding different levels of compound Chinese herbal medicines significantly reduced the feed-to-egg ratio of No-Ma chickens(P<0.05).Groups II and III significantly increased the eggshell thickness of No-Ma chickens(P < 0.05).Group II significantly increased the protein height of No-Ma chickens(P < 0.05).Other indicators of egg specific gravity,egg shell strength,and Hastelloy unit have different degrees of improvement,among which group II has the best effect on egg quality of No-Ma chickens.2.Compared with the control group,group Ⅱ significantly increased the half evisceration rate of No-Ma chickens(P < 0.05).Groups II and III not only significantly improved the evisceration rate and cooked meat rate of No-Ma chicken(P < 0.05),but also significantly decreased the water loss rate of No-Ma chicken(P < 0.05).Group II not only significantly reduced the drip loss of No-Ma chicken(P < 0.05),but also significantly increased the content of aspartic acid,glutamic acid and other fatty acids in the muscle of No-Ma chicken(P < 0.05).Groups I and II significantly increased the content of C20:3 and C22:6 in No-Ma chicken(P < 0.05).Dietary supplementation with different levels of compound Chinese herbal medicine significantly increased the content of C20:4 in No-Ma chicken(P < 0.05).Among which group Ⅱ had the best effect on the muscle quality of No-Ma chicken.3.Compared with the control group,the addition of different levels of compound Chinese herbal medicine to the diet significantly reduced the abdominal fat rate and liver fat rate of No-Ma chickens(P < 0.05).Group II significantly increased the content of intramuscular fat in No-Ma chickens(P < 0.05).Groups II and III significantly decreased the serum TG content of No-Ma chickens(P < 0.05).The addition of different levels of compound Chinese herbal medicines in the diet significantly decreased the levels of TC and LDL-C in the serum of No-Ma chickens(P < 0.05),and significantly increased the content of HDL-C(P < 0.05).In general,the compound Chinese herbal medicine has a significant improvement effect on the lipid metabolism of No-Ma chicken.In conclusion: Adding compound Chinese herbal medicine to No-Ma chicken basal diet can effectively improve the production performance,muscle quality and lipid metabolismrelated indicators of No-Ma chicken.The optimum dosage is 1.0% compound Chinese herbal medicine.