复合微生态制剂对断奶仔猪生长性能与腹泻率、盲肠与粪便微生物、免疫功能的影响

为了探讨复合微生态制剂不同添加剂量对断奶仔猪生长性能与腹泻率、盲肠与粪便微生物、免疫功能的影响,将150头断奶仔猪随机分成5组(对照组、Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组),对照组仔猪饲喂基础日粮,Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别在基础日粮中添加100 mg/kg、200 mg/kg、400 mg/kg、800 mg/kg的复合微生态制剂。结果显示:Ⅱ组、Ⅲ组、Ⅳ组与对照组相比较,平均日增重、平均日采食量、盲肠乳酸杆菌数、盲肠双歧杆菌数、粪便乳酸杆菌数、粪便双歧杆菌数、脾脏指数、IgG含量、IgA含量、IL-2含量、IL-4含量、IFN-γ含量均显著提高(P<0.05),料重比、腹泻率、盲肠大肠杆菌数、粪便大肠杆菌数均显著降低(P<0.05)。Ⅲ组与Ⅱ组、Ⅳ组相比较,盲肠乳酸杆菌数、IgG含量均显著提高(P<0.05),腹泻率均显著降低(P<0.05)。说明断奶仔猪基础日粮中添加复合微生态制剂能够提高断奶仔猪的生长性能,降低腹泻率,改善肠道微生物菌群平衡,提高免疫功能,以400 mg/kg作为临床应用的最适添加剂量。

饲用鱼油对仔猪生长性能的影响

试验研究了在基础日粮中添加不同比例的饲用鱼油对40日龄断奶仔猪生长性能的影响。选择体重相近40日龄左右的DLY三元杂交猪20头,分为4个组,基础日粮为玉米-豆粕型,各处理组基础日粮配方相同。Ⅰ组(对照组)不加饲用鱼油,Ⅱ2%的菜子油+1%的鱼油,Ⅲ1%的菜子油+2%的鱼油,,Ⅳ3%饲用鱼油。试验期30d,实验结果表明,在日粮中添加2%饲用鱼油对促进日采食量及提高日增重效果均达到最佳。

Effects of a Self-made Compound Chinese Herbal Medicine Additive on Growth Performance and Occurrence of Diarrhea in Weaned Piglets

In this study,the effects of compound Chinese herbal medicine on growth performance and occurrence of diarrhea in weaned piglets were investigated.A compound Chinese herbal medicine that consisted of Astragalus membranaceus,Codonopsis pilosula,Epimedium sagittatum,massa medicata fermentata,Atractylodes macrocephala,malt,Glycyrrhiza uralensis,Angelica sinensis and Crataegus pinnatifida,was crushed and then passed through a 500-mesh sieve.The obtained powder was added to the basal diet of weaned piglets.A total of 100 healthy crossbred weaned piglets,aging 26±2 days,were selected.They were randomly divided into 5groups（20 piglets/group） in according to principles of similar parity（3-5）,similar body weight and half male and half female.The piglets in the control group were fed with basal diet.For the piglets in the I,II and III groups,0.4%,0.7% and 1.0%of Chinese herbal medicine additive were added to the basal diets,respectively.The basal diet of piglets in the IV group was added with 30 mg/kg of oxytetracycline.The results showed the incidences of diarrhea in I,II and III groups were4.85%,5.14% and 5.63% lower than that of control groups（P〈0.05）.There was no significant difference in incidence of diarrhea between the control and the IV groups.