甘露寡糖对断奶仔猪生长性能、血清免疫指标及经济效益的影响  

Effect of mannan oligosaccharides on growth performance,serum immunity indicators and breeding economic benefits of weaned piglets

作　　者：王贺丽[1] WANG He-li

机构地区：[1]驻马店职业技术学院,河南驻马店463000

出　　处：《饲料研究》2023年第11期35-39,共5页Feed Research

摘　　要：试验旨在研究甘露寡糖(MOS)对断奶仔猪生长性能、血清免疫指标及经济效益的影响。试验将480头断奶仔猪随机分为4组,每组6个重复。对照组仔猪饲喂基础日粮,试验组分别在基础日粮中添加0.1%、0.2%、0.3%的MOS。预试期3 d,正式试验期30 d。结果显示,日粮中添加MOS可以显著提高仔猪平均日增重、平均日采食量(P<0.05),显著降低仔猪腹泻率(P<0.05)。与对照组比,日粮中添加MOS显著提高了断奶仔猪血清中总抗氧化能力(T-AOC)和超氧化物歧化酶(SOD)活性(P<0.05),显著降低丙二醛(MDA)含量(P<0.05);日粮中添加0.2%、0.3%的MOS可以显著提高血清中免疫球蛋白G (IgG)含量(P<0.05),日粮中添加MOS显著提高了免疫球蛋白A (IgA)含量(P<0.05),降低了白细胞介素-6 (IL-6)含量(P<0.05)。日粮中添加0.2%、0.3%的MOS可以显著增加肠道中双歧杆菌、乳酸杆菌的数量(P<0.05);添加0.3%的MOS还可以显著降低大肠杆菌数量(P<0.05)。MOS组仔猪平均利润分别比对照组高23.60、24.88、27.94元/头。结果表明,日粮中添加MOS可以提高断奶仔猪生长性能,提高机体免疫能力,调节肠道微生物结构,提高养殖经济效益,建议MOS添加量为0.3%。The experiment was conducted to investigate the effect of mannan oligosaccharides(MOS)on growth performance,serum immunity indices and economic benefits of weaned piglets.480 weaned piglets were randomly divided into four groups,with six replicates in each group.The control group weaned piglets was fed with a basic diet,while experiment group added 0.1%,0.2%and 0.3%MOS to basic diet,respectively.Pretrial period of 3 d,and formal trial period of 30 d.The results showed that compared with control group,average daily gain and average daily feed intake of piglets in experiment groups increased significantly(P<0.05),the diarrhea rate of piglets was significantly lower than that of control group(P<0.05).Compared with control group,adding MOS to diet significantly increased T-AOC and SOD activity in serum of weaned piglets(P<0.05)and MDA content significantly decreased(P<0.05).Adding 0.2%and 0.3%MOS to diet significantly increased content of IgG in serum(P<0.05).The serum IgA content of piglets in experiment groups was significantly higher than that in control group(P<0.05),and content of IL-6 in serum of piglets was significantly lower(P<0.05).Number of Bifidobacteria and Lactobacillus in intestinal tract of weaned piglets in 0.2%group and 0.3%group was significantly higher than that in control group(P<0.05).The number of E.coli in intestinal tract of piglets in 0.3%group was significantly lower than that in control group(P<0.05).Average profit of piglets in MOS groups was 23.60,24.88,27.94 yuan/head higher than that of control group,respectively.The results indicate that adding MOS to diet can improve growth performance,enhance body's immune ability,improve intestinal microbial structure and increase the economic benefits of breeding,recommend MOS addition amount is 0.3%.

关 键 词：甘露寡糖 断奶仔猪 生长性能 免疫指标 经济效益 

分 类 号：S828[农业科学—畜牧学]