【摘要】 本试验旨在研究银杏叶超微粉对断奶仔猪生长性能、肠道菌群及其形态的影响。将120头25日龄断奶的杜×长×大三元杂交仔猪随机分为3组,对照组饲喂基础日粮,试验组在基础日粮中分别添加1.0%银杏叶细粉和1.0%银杏叶超微粉。每组设4个重复,每个重复10头。试验期28 d。试验结束时,测定断奶仔猪生长性能、肠道菌群、小肠形态、血浆D-乳酸和内毒素含量以及二胺氧化酶活性。结果表明:与对照组和1.0%银杏叶细粉组相比,日粮添加1.0%银杏叶超微粉可显著提高断奶仔猪的平均日增重(P<0.05),降低耗料增重比(P<0.05);显著降低仔猪直肠大肠杆菌和沙门氏菌数量(P<0.05),增加乳酸杆菌和双歧杆菌数量(P<0.05);显著提高仔猪小肠的绒毛高度、绒毛高度/隐窝深度(P<0.05);显著降低仔猪血浆D-乳酸水平、内毒素含量和二胺氧化酶活性(P<0.05);1.0%银杏叶细粉组和对照组仔猪各指标差异不显著。本试验表明,日粮添加1.0%银杏叶超微粉可改善断奶仔猪肠道菌群平衡和小肠形态,保护肠道屏障功能,从而提高断奶仔猪生长性能。更多还原

【Abstract】 An experiment was conducted to investigate the effect of Ginkgo biloba leaves ultrafine powder on growth performance, intestinal microflora and intestinal morphology in weaned piglets. total of 120 crossbred piglets(Duroc×Landrace×Large Yorkshire) weaned at 25 days of age were randomly divided into 3 groups, each with 4 replicates of 10 piglets per replicate. The control group was fed a basal diet, while the other two groups were fed the same basal diet supplemented with 1.0% Ginkgo biloba leaves fine powder and 1.0% Ginkgo biloba leaves ultrafine powder, respectively. The experiment lasted for 28 days. At the end of the experiment, growth performance, intestinal microflora, intestinal morphology, plasma D-lactate and endotoxin level, diamine oxidase activity were measured. The results showed that compared with the control group and the group supplemented with 1.0% Ginkgo biloba leaves fine powder, adding 1.0% Ginkgo biloba leaves ultrafine powder to diets of weaned piglets significantly increased average daily gain(P<0.05) and decreased feed to gain ratio(P<0.05). Adding 1.0% Ginkgo biloba leaves ultrafine powder also decreased the amounts of E.coli and salmonella(P<0.05), and increased the amounts of lactobacillus and bifidobacteria in rectum(P<0.05). In weaned piglets fed 1.0% Ginkgo bilobaleaves ultrafine powder, intestinal villous height and villous height to crypt depth ratio were remarkably elevated(P<0.05) as compared with the control group and the group supplemented with 1.0% Ginkgo biloba leaves fine powder. Plasma D-lactate and endotoxin level, diamine oxidase activity were also increased in weaned piglets fed 1.0% Ginkgo biloba leaves ultrafine powder(P<0.05). There were no differences between the group supplemented with 1.0% Ginkgo biloba leaves fine powder and the control group. The study suggested that adding 1.0% Ginkgo biloba leaves ultrafine powder to diets of weaned piglets could improve intestinal microflora balance and intestinal morphology, and protect intestinal barrier, thus improving growth performance.更多还原