黄芪茎叶粉和党参茎叶粉对雏鸡生长性能、抗氧化能力及血清生化指标的影响OA

[Objective]To investigate the effects of Astragalus membranaceus stem and leaf powder and Codonopsis pilosula stem and leaf powder,as feed additives,on growth performance,antioxidant capacity,and serum biochemical indices in chicks.[Methods]Forty healthy 1-day-old Sanhuang chicks were selected and randomly divided into four groups.The control group(Group A)received a basal diet,while the experimental groups(Groups B,C,and D)were fed the basal diet supplemented with 1%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder,2%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder,and 3%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder,respectively(all addition ratios were calculated as mass percentages of the basal diet).The trial lasted 18 days and was divided into two phases(days 1-9 and days 10-18).Growth performance indicators,serum antioxidant parameters,and biochemical indices were measured and analyzed across groups.[Results]The final body weight and average daily gain of chicks in all experimental groups were significantly higher(P＜0.05)than those in the control group,while the feed-gain ratio was significantly lower(P＜0.05);among them,Group C(supplemented with 2%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder)exhibited the most significant growth-promoting effect.Regarding antioxidant capacity,compared to the control group,only Group D(3%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder)showed a significant increase in serum total superoxide dismutase(T-SOD)activity(P＜0.05);no significant differences(P＞0.05)were observed in total antioxidant capacity(T-AOC)or malondialdehyde(MDA)content between Groups B,C,D and the control group,although a beneficial trend of improvement was evident overall.Serum biochemical indices detection revealed significant inter-group differences only in urea nitrogen content:compared with Group A,serum urea nitrogen concentrations in Groups B,C,and D showed a decreasing trend,with those in Groups B and D being significantly lower than that in Group A(P＜0.05),suggesting that supplementation with A.membranaceus and C.pilosula stem and leaf powders may enhance protein metabolic efficiency in chicks.No significant differences(P＞0.05)were found among groups in total protein,albumin,globulin,albumin-to-globulin ratio,creatinine,or glucose levels.[Conclusion]The results demonstrate that A.membranaceus stem and leaf powder;C.pilosula stem and leaf powder can effectively promote growth,improve feed conversion efficiency,and enhance antioxidant function in chicks,with the optimal effect achieved at a supplementation level of 2%A.membranaceus stem and leaf powder+1%C.pilosula stem and leaf powder in the basal diet.