饲喂发酵枸杞渣对滩羊生产性能、血清生化指标、免疫指标及抗氧化性能的影响OA

This experiment was conducted to study the effects of fermented goji berry residue on per-formance,serum immune indexes and antioxidant function of Tan sheep.A total of 48 ram lambs of Tan sheep,aged 3-4 months and weighing(28.26±1.03)kg,were randomly assigned to two groups,with 24 replicates per group.The dietary treatments consisted of a basal diet supplemented with 0％(control group)and 4％fermented goji berry residues(experimental group),and the trial duration was 68 days,with an 8-day pre-feeding period.The results showed that the average daily gain(ADG)of individuals in the experimental group was significantly higher than that of the control group(P＜0.05).The serum im-munoglobulin A(IgA)content in the experimental group was significantly higher than that in the control group(P＜0.05),while the tumor necrosis factor-alpha(TNF-α)content was significantly lower(P＜0.05).Serum malondialdehyde(MDA)activity in the experimental group was significantly decreased com-pared to the control group(P＜0.05),whereas the activity of glutathione peroxidase(GSH-Px)in the liver was significantly increased(P＜0.05).The mRNA expression levels of IL-2,IL-6,and IFN-γ in lym-phocytes showed significant differences,with relative expression levels markedly elevated in the experi-mental group(P＜0.05),whereas the relative expression levels of IL-4 and TGF-β1 tended to decrease,although not significantly.In summary,dietary supplementation with fermented goji berry residues can significantly enhance the growth performance of fattening Tan sheep,markedly improve serum immune globulin and glutathione peroxidase content,significantly reduce TNF and MDA levels,and modulate im-mune and antioxidant functions,thereby promoting animal health and growth.