中国畜牧兽医 ›› 2024, Vol. 51 ›› Issue (10): 4352-4363.doi: 10.16431/j.cnki.1671-7236.2024.10.016

• 营养与饲料 • 上一篇    

凝结芽孢杆菌对感染鸡白痢沙门菌蛋雏鸡生长性能、抗氧化能力和免疫功能的影响

田光明1, 马丽1, 蒲跃进2, 游蕾1, 王皓杰1, 张应胡1, 方春1, 梁雄燕1, 温振宇1, 谭磊1, 郑明浩1   

  1. 1. 长江大学动物科学技术学院, 荆州 434025;
    2. 湖北省畜牧技术推广中心, 武汉 430064
  • 收稿日期:2024-04-15 发布日期:2024-09-30
  • 通讯作者: 马丽 E-mail:2022710899@yangtzeu.edu.cn
  • 作者简介:田光明,E-mail:g.tian@yangtzeu.edu.cn。
  • 基金资助:
    湖北省第四批现代农业产业技术体系禽蛋产业技术体系项目(2023HBSTX4-04);动物胚胎工程及分子育种湖北省重点实验室开放课题(KLAEMB202402)

Effect of Bacillus coagulans on Growth Performance,Antioxidant Capacity and Immune Function of Laying Chicks Infected with Salmonella Pullorum

TIAN Guangming1, MA Li1, PU Yuejin2, YOU Lei1, WANG Haojie1, ZHANG Yinghu1, FANG Chun1, LIANG Xiongyan1, WEN Zhenyu1, TAN Lei1, ZHENG Minghao1   

  1. 1. College of Animal Science and Technology, Yangtze University, Jingzhou 434025, China;
    2. Hubei Provincial Livestock Technology Extension Center, Wuhan 430064, China
  • Received:2024-04-15 Published:2024-09-30

摘要: 【目的】 试验旨在研究饲料中添加禽源性凝结芽孢杆菌BC-362对鸡白痢沙门菌(SP)感染蛋雏鸡生长性能、抗氧化能力和免疫功能的影响。【方法】 选取150只1日龄健康、体重相近的京红1号SPF蛋雏鸡,随机分为对照组(A组)、益生菌组(B组)、SP+益生菌组(C组)、SP+抗生素组(D组)、SP模型组(E组),每组6个重复,每个重复5只雏鸡。A、D和E组蛋雏鸡饲喂基础饲粮,B和C组蛋雏鸡在基础饲粮中添加1.0×108 CFU/g凝结芽孢杆菌,7日龄时,C、D和E组蛋雏鸡灌胃1.0×109 CFU SP(0.5 mL),A和B组蛋雏鸡灌胃同等剂量无菌水,D组蛋雏鸡灌胃后第2天开始,在基础饲粮中添加0.375 g/kg 硫酸新霉素。试验期共14 d。14日龄时测定蛋雏鸡生长性能;采集血液、免疫器官和空肠组织,测定血清抗氧化和免疫指标、免疫器官指数、空肠组织形态、CD3免疫组化表达、炎性和抗氧化相关基因转录水平。【结果】 ①与A组相比,B组蛋雏鸡平均日增重(ADG)显著增加、料重比(F/G)显著下降(P<0.05),E组蛋雏鸡平均日采食量(ADFI)和ADG均显著降低(P<0.05);与E组相比,C和D组蛋雏鸡ADFI和ADG均显著增加(P<0.05);C与D组蛋雏鸡ADFI、ADG和F/R均无显著差异(P>0.05)。②与A组相比,B组蛋雏鸡血清超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性显著提高(P<0.05),E组蛋雏鸡血清SOD、CAT、谷胱甘肽过氧化氢酶(GSH-Px)活性和总抗氧化能力(T-AOC)均显著下降(P<0.05),而丙二醛(MDA)含量显著上升(P<0.05);与E组相比,C和D组蛋雏鸡血清SOD活性和T-AOC均显著上升(P<0.05),MDA含量显著下降(P<0.05);C组蛋雏鸡血清中CAT和GSH-Px活性显著高于D组(P<0.05)。③与A组相比,B组蛋雏鸡血清IgA和IgM含量均显著提高(P<0.05),E组蛋雏鸡血清IgA、IgM和IgG含量均显著降低(P<0.05);与E组相比,C和D组蛋雏鸡血清IgA、IgM和IgG含量均显著增加(P<0.05);C组蛋雏鸡血清IgM含量显著高于D组(P<0.05)。④与A组相比,B组蛋雏鸡胸腺指数显著提高(P<0.05),E组蛋雏鸡免疫器官指数均显著降低(P<0.05);与E组相比,C和D组蛋雏鸡胸腺和法氏囊指数显著提高(P<0.05);C组蛋雏鸡脾脏指数显著高于D组(P<0.05)。⑤与A组相比,B组蛋雏鸡空肠组织杯状细胞数量和CD3表达量无显著差异(P>0.05),E组蛋雏鸡空肠组织杯状细胞数量和CD3表达量均显著减少(P<0.05);与E组相比,C和D组蛋雏鸡空肠组织CD3表达量显著增加(P<0.05);C组蛋雏鸡空肠组织杯状细胞数量显著高于D组(P<0.05)。⑥与A组相比,B组蛋雏鸡空肠组织炎性相关基因Toll样受体4(TLR4)、髓分化因子88(MYD88)、核因子κB(NF-κB)和白细胞介素-6(IL-6)相对表达量显著下调(P<0.05),抗氧化相关基因Kelch样ECH关联蛋白1(Keap1)、谷胱甘肽过氧化酶1(GPX1)和谷氨酸半胱氨酸连接酶催化亚基(GCLC)相对表达量显著上调(P<0.05),E组蛋雏鸡空肠组织炎性相关基因TLR4、MYD88、IL-1β、NF-κBIL-6相对表达量均显著上调(P<0.05),抗氧化相关基因NADH醌脱氢酶1(NQO1)、血红素氧合酶1(HO-1)、GCLC和核因子E2相关因子(Nrf2)相对表达量均显著下调(P<0.05);C和D组蛋雏鸡炎性相关基因TLR4、MYD88、IL-、NF-κBIL-6相对表达量均显著低于E组(P<0.05),抗氧化相关基因NQO1和GCLC相对表达量显著高于E组(P<0.05);C组蛋雏鸡炎性相关基因TLR4、MYD88和IL-1β相对表达量显著低于D组(P<0.05),抗氧化相关基因Keap1和GCLC相对表达量显著高于D组(P<0.05)。【结论】 饲粮中添加禽源性凝结芽孢杆菌BC-362可提高感染SP蛋雏鸡生长性能,增强机体抗氧化及免疫能力,从而减轻SP感染导致的蛋雏鸡肠道炎症反应。

关键词: 凝结芽孢杆菌BC-362; 鸡白痢沙门菌; 生长性能; 抗氧化能力; 免疫功能; 蛋雏鸡

Abstract: 【Objective】 The experiment was conducted to investigate the effects of feed supplementation with avian autochthonous Bacillus coagulans BC-362 on the growth performance,antioxidant capacity and immune function of laying chicks infected with Salmonella Pullorum (SP).【Method】 150 one-day-old healthy Jinghong-1 SPF laying chicks with similar body weights were randomly divided into control group (group A),probiotic group (group B),SP + probiotic group (group C),SP + antibiotic group (group D),and SP model group (group E). Each group was comprised of 6 replicates,with five chicks per replicate. The basal diet was given to groups A,D,and E,while groups B and C were supplemented with 1.0×108 CFU/g of Bacillus coagulans in the basal diet. At 7 days,groups C,D,and E were gavaged with 1.0×109 CFU of SP (0.5 mL),and groups A and B were gavaged with the same dose of sterile water. Additionally,group D was supplemented with 0.375 g/kg of neomycin sulphate in the basal diet starting from the second day of gavage. The experimental period lasted for 14 days. At 14 days,the growth performance of the chicks was measured; Blood,immune organs,and jejunum tissues were collected to determine levels of serum antioxidant and immunity,immune organ index,jejunum morphology,CD3 immunohistochemistry expression,and transcript levels of inflammatory and antioxidant-related genes.【Result】 ①Compared with group A,the average daily gain (ADG) of laying chicks in group B was significantly increased,and the feed to gain ratio (F/G) was significantly decreased (P<0.05). In group E,both the average daily feed intake (ADFI) and ADG of laying chicks were significantly decreased (P<0.05). Compared with group E,the ADFI and ADG of laying chicks in groups C and D were significantly increased (P<0.05). There were no significant differences in ADFI,ADG,and F/G of laying chicks between groups C and D (P>0.05).②Compared with group A,the activities of serum superoxide dismutase (SOD) and catalase (CAT) of laying chicks were significantly higher (P<0.05) in group B, and the activities of serum SOD,CAT and glutathione peroxidase (GSH-Px) and total antioxidant capacity (T-AOC) of laying chicks were significantly decreased (P<0.05),while the malondialdehyde (MDA) content were significantly increased (P<0.05) in group E.Compared with group E,serum SOD activity and T-AOC of laying chicks were increased significantly (P<0.05),and the MDA content of laying chicks were decreased significantly (P<0.05) in both groups C and D. The activities of serum CAT and GSH-Px of laying chicks in group C were significantly higher than those in group D (P<0.05). ③Compared with group A,the serum IgA and IgM contents of laying chicks were significantly higher in group B (P<0.05),while the serum IgA,IgM and IgG contents of laying chicks were significantly lower in group E (P<0.05). Compared with group E,the serum IgA,IgM,and IgG contents of laying chicks were significantly increased in groups C and D (P<0.05),with the IgM content of laying chicks in group C was significantly higher than that in group D (P<0.05).④Compared with group A,the thymus index of laying chicks were significantly higher in group B (P<0.05),and the immune organ index of laying chicks were significantly lower in group E (P<0.05). The thymus and bursa indices of laying chicks were significantly higher in groups C and D compared to group E (P<0.05). The spleen index of laying chicks were significantly higher in group C than that in group D (P<0.05). ⑤Compared with group A,there was no significant difference in the number of goblet cells and CD3 expression in jejunal tissues of laying chicks in group B (P>0.05),while the numbers of goblet cells and CD3 expression were significantly reduced in group E (P<0.05). The expression of CD3 in jejunal tissues of laying chicks were significantly higher in groups C and D compared to group E (P<0.05),and the number of goblet cells in jejunal tissues of laying chicks in group C was significantly higher than that in group D (P<0.05).⑥Compared with group A,the relative expression of inflammation-related genes Toll-like receptor 4 (TLR4),myeloid differentiation factor 88 (MYD88),nuclear factor kappa-B (NF-κB) and interleukin-6 (IL-6) in jejunal tissues of laying chicks were significantly downregulate in group B (P<0.05),while the relative expression of antioxidant-related genes Kelch-like ECH associated protein 1 (Keap1),glutathione peroxidase 1 (GPX1),and glutamate-cysteine ligase catalytic subunit (GCLC) were significantly upregulate (P<0.05). The relative expression of inflammation-related genes TLR4,MYD88,IL-1β,NF-κB and IL-6 in jejunal tissues of laying chicks in group E was significantly upregulated (P<0.05),while the relative expression of antioxidant-related genes NADH quinone dehydrogenase 1 (NQO1),heme oxygenase 1 (HO-1),GCLC,and nuclear factor E2-associated factor (Nrf2) were significantly downregulated (P<0.05). In groups C and D,the relative expression of inflammation-related genes TLR4,MYD88,IL-1β,NF-κB and IL-6 of laying chicks were significantly lower than those in group E (P<0.05),whereas the relative expression of antioxidant-related gene NQO1 and GCLC was significantly higher than in group E (P<0.05). Compared with group D,the relative expression of TLR4,MYD88,and IL-1β was significantly downregulate (P<0.05),and the relative expression of Keap1 and GCLC was significantly upregulate in group C (P<0.05).【Conclusion】 The supplementation of avian autochthonous Bacillus coagulans BC-362 to diets improved the growth performance of SP-infected laying chicks and enhanced the body’s antioxidant and immune capabilities,thereby reducing the intestinal inflammatory response infected with SP in laying chicks.

Key words: Bacillus coagulans BC-362; Salmonella Pullorum; growth performance; antioxidant capacity; immune function; laying chicks

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