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首页> 外文期刊>Poultry Science >Prevention of Escherichia coli infection in broiler chickens with Lactobacillus plantarum B1
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Prevention of Escherichia coli infection in broiler chickens with Lactobacillus plantarum B1

机译：用Lactobacillus Plantarum B1预防肉鸡鸡大肠杆菌感染

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Two studies were performed to assess the efficacy of Lactobacillus plantarum B1 in prevention of pathogenic Escherichia coli K88 gastrointestinal infection in broilers. In an in vitro study, L. plantarum B1 showed resistance to acid and bile and inhibited the growth of E. coli K88. Additionally, L. plantarum B1 exhibited high ability to adhere to broiler embryo ileal epithelium. In an animal trial, 240 broilers at 1 d of age were randomly assigned to one of 4 treatment arms: negative control (NC) broilers fed a basal diet and not challenged; positive control (PC) broilers fed a basal diet and challenged with E. coli K88; L. plantarum (LP) treatment broilers fed a basal diet containing 2 x 10(9) cfu/kg L. plantarum B1 and challenged with E. coli K88; and antibiotic treatment (Anti) broilers fed a basal diet supplemented with colistin sulfate 20 mg/kg) and challenged with E. coli K88. Broilers fed L. plantarum B1 had greater (P = 0.05) BW than those in the PC treatment on d 14 and 28. Dietary L. plantarum B1 decreased (P 0.05) E. coli counts in the cecal contents on d 10 and 14, and increased (P 0.05) cecal lactic acid bacteria (LAB) on d 8, 10, 14, and 28 compared with the PC treatment. Dietary supplementation of L. plantarum B1 increased (P 0.05) the ileal mucosal secretory IgA concentration and reduced (P 0.05) IL-2, IL-4, IFN-gamma, and tumor necrosis factor-alpha levels in the ileum. Overall, these results suggest dietary supplementation of L. plantarum B1 promotes growth performance, lowers cecal E. coli counts, and increases the population of cecal LAB, as well as improves intestinal mucosal immunity in E. coli K88-challenged broilers.
机译：进行两项研究以评估乳酸杆菌B1在肉鸡中预防致病大肠杆菌K88胃肠道感染的疗效。在体外研究中，L.Purerarum B1显示对酸和胆汁的抗性，抑制大肠杆菌K88的生长。另外，L.Purerarum B1表现出高能力粘附在肉鸡胚胎上皮上。在动物试验中，1 d时的240个肉鸡被随机分配到4个治疗臂中的一个：阴性对照（NC）肉鸡饲喂基础饮食而非攻击;阳性对照（PC）肉鸡喂养基础饮食并用大肠杆菌K88挑战; L.Purerarum（LP）治疗肉鸡喂养含有2×10（9）CFU / kg L.Plantarum B1的基础饮食，并用大肠杆菌K88攻击;抗生素治疗（抗）肉鸡喂食硫酸乳蛋白硫酸钠20mg / kg的基础饮食，并用大肠杆菌K88攻击。饲喂L.Purerarum B1的肉鸡具有较大（P＆ = 0.05）Bw，而不是D 14和28的PC处理中的BW。膳食L.Purerarum B1降低（P <0.05）大肠杆菌在D上的肠内含量计数与PC处理相比，如图10和14所示，增加（P <0.05）D 8,10,14和28上的盲肠乳酸菌（Lab）。 L. plantarum b1的膳食补充剂（p <0.05）髂骨粘膜分泌IgA浓度和降低（P <0.05）IL-2，IL-4，IFN-Gamma，和肿瘤坏死因子-α水平。总体而言，这些结果表明L.Purerarum B1的膳食补充促进生长性能，降低了CECAL大肠杆菌计数，并增加了CECAL实验室的群体，以及改善大肠杆菌K88攻击性肉鸡的肠粘膜免疫力。

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