摘要
本试验研究了药用植物白藜芦醇和精油对断奶仔猪生长性能、免疫力、消化率和粪便微生物脱落的影响.试验选择平均体重为(8.03±0.54)kg的28 d断奶仔猪240头,随机分为4组,每组4个重复,每个重复15头.阴性对照组饲喂基础日粮,阳性对照组饲喂基础日粮+20 mg/kg金霉素,白藜芦醇组饲喂基础日粮+0.15% 白藜芦醇,精油组饲喂基础日粮+120 mg/kg混合精油.在32 d时所有仔猪口服5 mL含2.3×108 cfu/mL的大肠杆菌和5.9×108 cfu/mL的沙门氏菌口服液.结果:与阴性对照组相比,阳性对照组各阶段仔猪平均日增重、平均日采食量量显著提高(P<0.05),0~2 w仔猪料重比显著降低(P<0.05);阳性对照组、白藜芦醇组和精油组干物质消化率显著提高(P<0.05),同时与阴性对照组和白藜芦醇组相比,阳性对照和精油组氮消化率显著提高(P<0.05).与阴性对照组相比,白藜芦醇组仔猪血清免疫球蛋白G水平表现最高(P<0.05).攻毒后第3周,阳性对照组与阴性对照组相比,粪中沙门氏菌数量显著降低(P<0.05).与其他组相比,精油组粪中乳酸杆菌和芽孢杆菌数量显著增加(P<0.05).攻毒后第4周,阴性对照组粪中大肠杆菌数量也显著高于其他组(P<0.05).结论:断奶仔猪日粮补充白藜芦醇对仔猪生长性能、免疫功能和细菌感染后的微生物生态系统都有改善作用.
The effects of resveratrol and essential oils on growth performance,immunity,digestibility and fecal microbe shedding of weaned piglets were studied.240 piglets with an average weight of(8.03±0.54)kg were selected and randomly divided into 4 groups with 4 replicates for each group and 15 for each replicate.The negative control group was fed basic diet,the positive control group was fed basic diet+20 mg/kg aureomycin,the resveratrol group was fed basic diet+0.15%resveratrol,and the essential oil group was fed basic diet+120 mg/kg mixed essential oil.At 32 days,all piglets were given orally 5 mL of 2.3×108 cfu/mL escherichia coli and 5.9×108 cfu/mL salmonella oral solution.Results:compared with the control group,the average daily weight gain and average daily feed intake of piglets in the positive control group increased significantly(P<0.05),while the feed weight ratio of 0-2 w piglets decreased significantly(P<0.05).Compared with the negative control group,the dry matter digestibility of the positive control group,the resveratrol group and the essential oil group was significantly increased(P<0.05),while the nitrogen digestibility of the positive control group and the essential oil group was significantly increased compared with the negative control group and the resveratrol group(P<0.05).Compared with the negative control group,the serum immunoglobulin G level of piglets in the resveratrol group was the highes(t P<0.05).At the 3rd day after the challenge,the number of salmonella in feces in the positive control group was significantly lower than that in the negative control group(P<0.05).Compared with other groups,the quantity of lactobacillus and bacillus in the feces of the essential oil group increased significantly(P<0.05).After challenge,the number of e.coli in the feces of the negative control group was also significantly higher than that of the other groups(P<0.05).Conclusion:dietary supplementation of resveratrol can improve the growth performance,immune function and microbial ecosystem of weaned piglets.
作者
刘熙文
LIU Xiwen(Ji’an College,Ji’an,Jiangxi Province 343000,China)
出处
《中国饲料》
北大核心
2020年第8期37-40,共4页
China Feed
关键词
白藜芦醇
精油
细菌感染
生长性能
断奶仔猪
免疫
resveratrol
essential oil
bacteria infect
growth performance
weaned piglet
immunity
