中草药添加剂对育肥猪生长性能和免疫功能的影响

摘要

This experiment was conducted to investigate the effects of Chinese herbal additive on growth performance and immune function of finishing pigs in summer season.A total 200 of crossed growing pigs (Duroc × Landrace × Yorkshire),weighted about 60 kg,sorted by weight and gender,were allotted to 4 treatments,with 5 replicates per treatment and 10 pigs per replicate.The basal diet was corn - soybean, without antibiotics and Chinese herbal additives.The control group was fed with basal diets added with 50 mg/kg virginiamycin(50％) and the test group( Ⅰ , Ⅱ , Ⅲ ) were fed with basal diets added with 0.5 ％, 1.0 ％, 1.5 ％ Chinese herbal additive.The results were as follows: compared with control group,average daily gain and average daily intake of group Ⅲ were significantly increased (P＜ 0.05), and the feed/gain ration of all test groups were decreased (P＜0.05).In contrast to control group, the apparent digestibility of dry matter, crude protein,calcium, phosphorus and the utilization of energy of all test group were tended to increase.And compared with control group, the concentration of serum IgA, IgG, IgM,C3,C4 of test group pigs were significantly increased ( P＜0.05).In conclusion, in summer season, the diet added with Chinese herbal additive can improve growth performance,utilization of nutrients and immune function of finishing pigs.%本试验旨在探讨夏季在育肥猪日粮中添加中草药添加剂对其生长性能和免疫功能的影响.选取200头体重约60kg的杜长大(杜洛克×长白×大白)育肥猪,随机分为4个组(处理),每个组5个重复,每个重复10头猪.对照组饲喂在基础日粮中添加50 mg/kg维吉尼亚霉素(50%)的对照日粮,Ⅰ、Ⅱ、Ⅲ组为试验组,分别饲喂在基础日粮中添加0.5%、1.0%、1.5%中草药添加剂的日粮.试验结果表明,与抗生素对照组相比,日粮中添加1.5%中草药添加剂显著提高育肥猪平均日增重、平均日采食量(P＜0.05),各试验组均有改善料重比的趋势,但差异不显著;日粮中添加中草药添加剂与抗生索对照组相比,干物质、总能、粗蛋白质、钙、磷等表观消化率均有提高的趋势;育肥猪日粮中添加中草药添加剂与抗生素对照相比,血清中免疫球蛋白IgA、IgG、IgM及补体C3、C4的浓度均显著提高(P＜0.05).由本试验结果可以看出,日粮中添加中草药添加剂明显改善了育肥猪的生产性能、养分消化、免疫功能.