Research And Development Of Compound Chinese Herbal Medicine Additive And Its Application In Broiler Production

To develop a green and safe compound Chinese herbal medicine feed additives,the experiment selected 1200 feathers AA broiler thatl day old,Were randomly divided into 10 groups,each group of 120 feathers.Selection of compound Chinese herbal medicine for feed additives,Chinese herbal medicine compatibility into A,B,C three groups,Using 0.5%,1%,1.5%three added concentration,A total of nine test groups(no dietary antibiotics in the basal diet)and a control group(basal diet And antibiotic group)were compared.The test period was 42 days,at 21 and 42 days of age,6 samples were randomly sampled from each group.The effects of compound Chinese herbal medicine on the growth performance,slaughter performance,muscle quality,blood index,Organ development,immune function and antioxidant functionand of broilers were studied.The results showed that:1、Effect of compound Chinese herbal medicine additive on production performance of BroilersCompound Chinese herbal medicine additive can increase the average body weight,average daily gain and average daily feed intake,reduce meat ratio and mortality.Compared with the control group,the average weight,average daily gain and average daily feed intake were increased by 5.04%,2.29%and 0.62%(P>0.05)in the A-3 group at 21 days of age,however,the meat ratio decreased by 2.20%.The average daily feed intake increased by 2.42%(P>0.05)in the A-3 group at 42 days of age,Meat ratio did not change;2、Effect of compound Chinese herbal medicine additive on slaughter performance of BroilersCompound Chinese herbal medicine additives can improve the slaughter performance of broilers.Compared with the control group,the slaughter rate of C-2 group was significantly increased by 1.85%(P<0.05)at 21 days of age.The subcutaneous fat thickness of A-2,A-3,B-1,B-3 and C-2 groups were significantly reduced by 20.68%,25.86%,19.83%,22.10%and 18.41%(P<0.05);The abdominal fat rates of A-1,A-2 and A-3 were decreased by 30.80%,27.57%and 28.65%(P<0.05).The thickness of subcutaneous fat in C-1 and C-3 groups was significantly reduced by 21.35%and 16.01%(P<0.05)at 42 days of age;B-3 and C-1 groups increased significantly by 10.75%and 11.42%(P<0.05);3、Effect of compound Chinese herbal medicine additive on muscle quality of BroilersCompound Chinese herbal medicine additives can significantly improve the muscle quality of broilers.Compound Chinese herbal medicine additives can better improve the broiler pectoral and leg muscle PH,moisture content,drip loss rate,water loss rate,the Department of hydraulic muscle tenderness,cooked meat and muscle flesh;4、Effect of compound Chinese herbal medicine additive on blood parameters of BroilersCompound Chinese herbal medicine can significantly increase the amount of RBC,WBC and HGB and HCT in broiler blood.The contents of TP,ALB and GLO in broiler chickens are increased,A/G is decreased,serum TG content and AST activity are reduced,reduce serum TC levels in late growth stages.Compared with the control group,the levels of TP and GLO in serum of C-3 group were significantly increased by 23.03%and 36.33%(P<0.05)at 21 days of age;The levels of serum TG in A-2,B-2 and B-3 groups were significantly decreased by 28.33%,23.33%and 25.00%(P<0,05);The serum TG levels in group A and C-1 and C-2 were significantly decreased by 33.33%,29.17%,29.17%,22.92%and 27.08%(P<0.05)at 42 days of age;The TC content in serum of C-2 group was significantly decreased by 19.49(P<0.05);5、Effect of compound Chinese herbal medicine additive on organ development of BroilersCompound Chinese herbal medicine additives can significantly promote the development of broiler thymus and bursa of fabricius.Compared with the control group,the thymus weight and thymus index of A-3 group were significantly increased by 32.61%and 31.03%(P<0.05)at 21 days of age.The weight of bursa and the bursa index were significantly higher than those in the control group(P<0.05).At 42 days of age,the weight distribution of bursa of C-1 and C-2 was significantly increased by 50.00%,50.00%and 40.65%(P<0.05).Compared with the control group,the jejunum and ileum length of A and C increased,but there was no significant effect(P>0.05),while the height,width and quantity of A and C in duodenum,jejunum and ileum were improved.6、Effect of compound Chinese herbal medicine additive on Immune Function of BroilersCompound Chinese herbal medicine additive can significantly improve serum NDV antibody level and serum cytokine content in broilers.Compared with the control group,the serum levels of NDV in A-1,A-3,B-3,C-1 and C-2 groups were significantly increased by 29.57%,46.15%,32.26%and 26.17%and 27.21%(P<0.05);The levels of serum IL-2 in A-3 and C-3 groups were significantly increased by 72.11%and 47.24%(P<0.05).The levels of serum IFN-y in A-3 and C-1 groups were significantly increased by 93.96%and 123.00%(P<0.05);The serum NDV levels in the A-2,C-2 and C-3 groups were significantly increased by 29.78%,36.73%and 29.98%(P<0.05)at 42 days of age;The levels of serum IL-2 in B-1,B-2 and C-1 groups were significantly increased by 60.11%,62.11%and 59.85%(P<0.05);The levels of IL-4 and IFN-y in serum A-1 and C-3 were significantly increased by 121.70%and 63.33%(P<0.05)and 92.05%and 160.92%(P<0.05).7、Effect of compound Chinese herbal medicine additive on oxidation function of BroilersCompound Chinese herbal medicine additives can significantly improve the serum and immune organs of broiler antioxidant function.At 21 days of age,Compared with the control group,the contents of MDA in serum,thymus and bursa of Fabricius were significantly lower than those in the control group(P<0.05);The T-AOC activity of thymus in A-3 and B-3 groups was significantly increased by 24.32%and 23.42%(P<0.05);The T-AOC activity of spleen in C-1 group was significantly increased by 56.75%(P<0.05);The serum MDA content in group A-2 decreased significantly by 20.06%(P<0.05)at 42 days of age;The content of MDA in thymus of group A was significantly decreased,the activity of SOD in thymus was significantly(P<0.05),In addition to group A-1,the content of MDA in each group was significantly lower than that in control group(P<0.05).Conclusion:From the above results can be drawn:adding compound Chinese herbal medicine group A and C can improve the production performance and slaughter performance of broiler,improve muscle quality and blood physiological and biochemical indexes,enhance immune function,reduce mortality,group C which 0.5%of the compound Chinese herbal medicine has the highest economic benefits,can be used as a good compound feed additives to promote the use.