| 乳酸菌发酵饲料对SPF鸡免疫功能的影响 |
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| 引用本文： | 李锦,朱风华,陈甫,朱连勤.乳酸菌发酵饲料对SPF鸡免疫功能的影响[J].中国畜牧杂志,2019(7):101-105. |
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| 作者姓名： | 李锦 朱风华 陈甫 朱连勤 |
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| 作者单位： | 1.青岛农业大学动物医学院 |
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| 基金项目： | 山东省现代农业产业技术体系家禽产业创新团队岗位专家(SDAIT-11-07) |
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| 摘 要： | 本试验旨在研究乳酸菌发酵饲料对SPF鸡免疫功能和磷脂酰肌醇三激酶/蛋白激酶B(PI3K/Akt)信号通路的影响。选取14日龄无特定病原体(SPF)雏鸡120羽,随机分为4组,每组5个重复,每个重复6羽。对照组饲喂基础饲料,发酵饲料组饲喂乳酸菌发酵饲料,基础阻断剂组为基础饲料加PI3K阻断剂组,乳酸菌阻断剂组为乳酸菌发酵饲料加PI3K阻断剂。试验期21 d。结果表明:发酵饲料组与对照组、乳酸菌阻断剂组与基础阻断剂组比较,乳酸菌发酵饲料可降低雏鸡耗料增重比(P<0.05),提高日增重、T淋巴细胞转化率、B淋巴细胞转化率、白细胞介素-2(IL-2)、白细胞介素-6(IL-6)、干扰素-α(IFN-α)、免疫球蛋白M(IgM)、免疫球蛋白A(IgA)和免疫球蛋白G(IgG)含量(P<0.05),提高雏鸡新城疫抗体(NDV-Ab)水平(P<0.05),提高雏鸡脾脏中PI3K、Akt mRNA和蛋白表达量(P<0.05);基础阻断剂组与对照组、乳酸菌阻断剂组与发酵饲料组比较,PI3K阻断剂可以提高雏鸡耗料增重比(P<0.05),降低日增重、T淋巴细胞转化率、B淋巴细胞转化率、IL-2、IL-6、IFN-α、IgM、IgA和IgG含量(P<0.05),降低雏鸡NDV-Ab水平(P<0.05),降低雏鸡脾脏中PI3K、Akt mRNA和蛋白表达量(P<0.05)。由此可见,乳酸菌发酵饲料可能是通过激活PI3K/Akt信号通路来提高SPF雏鸡的免疫功能。
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| 关 键 词： | 鸡 乳酸菌 PI3K阻断剂 免疫功能 PI3K/AKT信号通路 |
Effects of Lactic Acid Bacteria Fermented Feed on Immune Function of Chickens |
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| LI Jin,ZHU Feng-hua,CHEN Fu,ZHU Lian-qin.Effects of Lactic Acid Bacteria Fermented Feed on Immune Function of Chickens[J].Chinese Journal of Animal Science,2019(7):101-105. |
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| Authors: | LI Jin ZHU Feng-hua CHEN Fu ZHU Lian-qin |
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| Institution: | ,College of Veterinary Medicine, Qingdao Agricultural University |
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| Abstract: | The purpose of this experiment was to study the effects of the lactic acid bacteria fermented feed on immune function and phosphatidylinositol 3-kinase/protein kinase B(PI3 K/Akt) signaling pathways in chickens. 120 fourteen-dayold specific pathogen free(SPF)chickens were randomly allocated to 4 groups with 5 replicates per group and 6 chickens per replicate. Group 1 was the basic diet group, group 2 was the lactic acid bacteria fermented feed group, group 3 was the basal diet plus PI3 K blocker group, and group 4 was the lactic acid bacteria fermented feed plus PI3 K blocker group. The experiment lasted for 21 d. Comparison between group 2 and group 1, group 4 and group 3,the he results showed that the lactic acid bacteria fermented feedsignificantly reduced feed to gainratio(P<0.05), increased average daily gain, T lymphocyte transformation rate, B lymphocyte transformation rate, the levels of interleukin-2(IL-2),interleukin-6(IL-6), interferon-α(IFN-α),immunoglobulinM(IgM), immunoglobulin A(IgA)andimmunoglobulin G(IgG)(P<0.05), increased the antibody level of Newcastle disease(NDV-Ab)in chickens(P<0.05), and increased the expression of PI3 K, Akt mRNA and protein in spleen of chickens(P<0.05). Comparison between group 3 and 1, group 4 with 2, PI3 K blocker increased feed to gainratio(P<0.05), reduced the average daily gain of chickens, T lymphocyte transformation rate, B lymphocyte transformation rate, the levels of IL-2, IL-6, IFN-α, IgM, IgA and IgG(P<0.05), decreased the NDV-Ab in chickens(P<0.05),and decreased the expression of PI3 K, Akt mRNA and protein in chickens(P<0.05). The conclusion is that the lactic acid bacteria fermented feed may improve the immune function of the chickens by activating the PI3 K/Akt signaling pathway. |
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| Keywords: | Chicken Lactic acid bacteria PI3K blocker Immune function PI3K/Akt signaling pathway |
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