复合酸化剂对仔猪生长性能、肠道菌群和血液生化与免疫指标的影响  

Effects of compound acidifier on growth performance,intestinal flora and blood biochemical and immune indexes of piglets

作　　者：于瀚学 齐娟 YU Hanxue;QI Juan(Agricultural Comprehensive Administrative Law Enforcement Brigade,Jimo District,Qingdao,Shandong province 266200,China;Animal Husbandry Development Service Center,Jimo District,Qingdao,Shandong province 266200,China)

机构地区：[1]青岛市即墨区农业综合行政执法大队,山东青岛266200 [2]青岛市即墨区畜牧业发展服务中心,山东青岛266200

出　　处：《中国饲料》2024年第12期29-32,共4页China Feed

摘　　要：为探究复合酸化剂对仔猪生长性能、肠道菌群和血液生化与免疫指标的影响,本试验将80头25日龄的仔猪随机分为4组,每组4个重复,每个重复5头仔猪,分别在基础日粮中添加0%、0.1%、0.2%和0.3%的复合酸化剂。试验结果显示,与对照组相比,添加酸化剂后仔猪的终测体重和平均日采食量显著升高(P<0.05),试验Ⅱ、Ⅲ组仔猪的平均日增重显著升高(P<0.05),料重比显著降低(P<0.05)。另外与对照组相比,添加酸化剂后仔猪的腹泻率和死亡率均显著降低(P<0.05);试验Ⅰ、Ⅱ和Ⅲ组仔猪胃肠道内的乳酸菌数量显著升高(P<0.05),大肠杆菌数量显著降低(P<0.05);与对照组相比,试验Ⅰ、Ⅱ和Ⅲ组仔猪血清中白蛋白和总蛋白含量显著升高(P<0.05),尿素氮含量显著降低(P<0.05);试验Ⅰ、Ⅱ和Ⅲ组仔猪血清中免疫球蛋白G和免疫球蛋白A含量显著升高(P<0.05),抗炎因子白介素4含量显著升高(P<0.05)。由此可知,复合酸化剂可提高仔猪的生长性能,改善肠道菌群组成和血液生化指标,提高免疫功能,在本试验条件下,复合酸化剂的添加水平以0.2%为宜。In order to explore the effects of compound acidifier on growth performance,intestinal flora,blood biochemical and immune indexes of piglets,80 piglets aged 25 days were randomly divided into 4 groups,with 4 replicates in each group and 5 piglets in each replicate,and 0%,0.1%,0.2%and 0.3%compound acidifier were added to the basic diet respectively.The results showed that compared with the control group,the final weight and average daily feed intake of piglets increased significantly after adding acidifier(P<0.05),and the average daily weight gain of piglets increased significantly after adding 0.2%and 0.3%compound acidifier(P<0.05),and the feed-to-weight ratio decreased significantly(P<0.05).In addition,compared with the control group,the diarrhea rate and mortality rate of piglets were significantly reduced after adding acidifier(P<0.05).The number of lactic acid bacteria in the gastrointestinal tract of piglets in groupsⅠ,ⅡandⅢincreased significantly(P<0.05),while the number of Escherichia coli decreased significantly(P<0.05).Compared with the control group,the serum albumin and total protein contents of piglets in groupsⅠ,ⅡandⅢincreased significantly(P<0.05),and the urea nitrogen content decreased significantly(P<0.05).The contents of immunoglobulin G and immunoglobulin A in serum of piglets in groupsⅠ,ⅡandⅢincreased significantly(P<0.05),and the content of anti-inflammatory factor IL-4 increased significantly(P<0.05).Therefore,the compound acidifier can improve the growth performance of piglets,improve the composition of intestinal flora and blood biochemical indexes,and improve immune function.Under the experimental conditions,the appropriate addition level of compound acidifier is 0.2%.

关 键 词：复合酸化剂 仔猪 生长性能 肠道菌群 血液生化 免疫指标 

分 类 号：S816.7[农业科学—饲料科学]