日粮中添加紫锥菊对保育猪生长性能、免疫功能、血清生化指标及抗病能力的影响

Effect of adding Echinacea purpurea in diet on growth performance,immune function,serum biochemical index and disease resistance of nursery pig

试验探讨紫锥菊对保育猪生长性能、免疫功能、血清生化指标及抗病能力的影响。选择体况健康的25日龄"杜×长×大"三元杂交仔猪100头,随机分为4组,每组5个重复,每个重复5头猪。对照组保育猪饲喂基础日粮,试验组保育猪分别饲喂添加0.6%、1.2%、1.8%紫锥菊超微粉的基础日粮。试验期45 d。结果表明,与对照组相比,1.8%紫锥菊组保育猪的末重、平均日增重显著升高(P<0.05),料重比极显著降低(P<0.01);试验15 d,1.8%紫锥菊组保育猪血清免疫球蛋白G (IgG)、免疫球蛋白A (IgA)、补体C3水平显著升高(P<0.05),免疫球蛋白M(IgM)水平极显著升高(P<0.01);试验30 d,1.8%紫锥菊组保育猪血清免疫球蛋白M水平显著升高(P<0.05)。与对照组相比,1.8%紫锥菊组保育猪血清谷丙转氨酶(ALT)、碱性磷酸酶(ALP)活性、白蛋白(ALB)含量均显著升高(P<0.05),胆固醇含量显著降低(P<0.05),腹泻头数和腹泻率均显著降低(P<0.05)。研究表明,添加1.8%的紫锥菊可改善保育猪生长性能,提高机体免疫功能,增强抗病能力。

The experiment studied the effect of adding Echinacea purpurea in diet on growth performance, immune function, serum biochemical index and disease resistance of nusrey pig. A total of 100 ’Duroc×Landrace×Large’ ternary hybrid healthy piglets of 25-day-old were randomly divided into four groups, with five replicates in each group and five piglets in each replicate. The piglets in control group were fed with basic diet, and the piglets in experimental groups were fed with basic diet adding 0.6%, 1.2% and 1.8% of Echinacea purpurea ultrafine powder. The experiment lasted 45 d. The results showed that compared with control group, the final weight, daily weight gain of piglets in 1.8% Echinacea purpurea group were significantly increased(P<0.05), the feed to gain ratio extremely decreased(P<0.01). The levels of IgG, IgA and complement C3 of 1.8% Echinacea purpurea group were significantly higher than that of control group(P<0.05), and the IgM level were extremely increased at 15 d(P<0.01). The level of IgM of 1.8% Echinacea purpurea group was significantly increased at 30 d(P<0.05). In the 1.8% Echinacea purpurea group, the activity of ALT, ALP and ALB content were significantly increased(P<0.05), the content of TC was significantly reduced(P<0.05), and the number of diarrhea and diarrhea rate were significantly reduced(P<0.05). The study indicates that adding 1.8% Echinacea purpurea can improve the growth performance of nursery pig, enhance the immune function of the body, and enhance disease resistance.