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Dietary supplementation of sulfur amino acids improves intestinal immunity to Eimeria in broilers treated with anti-interleukin-10 antibody

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Animal Nutrition 2022年第3期10卷 382-389页

作者： Zhouzheng Ren Jiakun Yan Rose Whelan Xujie Liao Daniel E.Bütz Maria K.Arendt Mark E.Cook Xiaojun Yang Thomas D.Crenshaw College of Animal Science and Technology Northwest A&F UniversityYanglingShaanxiChina Department of Animal Sciences University of WisconsinMadisonWIUSA Evonik Operations GmbH Hanau-WolfgangGermany

Oral antibody to interleukin-10(anti-IL-10)enhances the intestinal immune defense against *** sulfur amino acids methionine and cysteine(MtC)play essential roles in inducing and maintaining protective immune responses during intestinal ***,increased dietary MtC may support the anti-IL-10-induced intestinal immunity to ***(n=640)were arranged in a 2×2×2 factorial design with 2 levels of each of the 3 main factors:dietary standardized ileal digestible(SID)MtC levels(0.6%or 0.8%),dietary anti-IL-10 supplementation(with or without),and coccidiosis challenge(control or challenge).Briefly,the broilers were supplied with either 0.6%or 0.8%SID MtC,each with or without anti-IL-10(300 mg/kg),from d 10 to *** d 14,broilers from each diet were gavaged with either PBS or *** resulting Eimeria infection induced fecal oocyst shedding and intestinal *** fed 0.8%SID MtC(main effects,P≤0.05)had decreased feed-to-gain ratio,increased duodenum and cecum luminal anti-Eimeria IgA titers,and decreased fecal oocyst counts,when compared to 0.6%SID *** supplementation of anti-IL-10(main effects,P≤0.05)increased cecum luminal total IgA concentration and decreased cecum ***(P≤0.05)were detected for growth performance and cecum luminal IFN-γ.Briefly,the highest body weight gain and feed intake were reached in PBS-gavaged broilers fed 0.8%SID MtC with no anti-IL-10 and in Eimeria-challenged broilers fed 0.8%SID MtC with *** Eimeria-infected broilers,anti-IL-10 increased intestinal luminal IFN-γ and body weight gain only at 0.8%SID ***,anti-IL-10 increased intestinal luminal IFN-γ levels,decreased cecum lesions and restored growth only when fed with adequate amounts of sulfur amino *** findings underscore the importance of providing sufficient essential nutrients to support the anti-IL-10 induced immunity against coccidiosis.

关键词： Chicken Coccidiosis Egg yolk antibody Interleukin-10 sulfur amino acid

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