Effects of xylo-oligosaccharide and flavomycin on the immune function of broiler chickens

PeerJ

Wanli Li¹  Mingfa Wang¹  Lin Yuan¹  Baodi Yi¹  Zhixiang Wang²  Chenhong Du²  Qianqian Huo² 

[1] Henan Academy of Agricultural Sciences, Henan Key Laboratory of Farm Animal Breeding and Nutritional Regulation, Institute of animal Husbandry and Veterinary Medicine, Zhengzhou, Henan, China;Henan Agricultural University, College of Animal Science and Veterinary Medicine, Zhengzhou, Henan, China;

关键词: Broiler;    XOS;    FLA;    Immune-related gene;    SCFA;   

DOI  :  10.7717/peerj.4435

来源: DOAJ

【 摘 要 】

This study investigated the effects of xylo-oligosaccharide (XOS) and flavomycin (FLA) on the performance and immune function of broiler chickens. A total of 150 ArborAcres broilers were randomly divided into three groups and fed for six weeks from one day of age in cascade cages. The diets of each test group were (1) a basal diet, (2) the basal diet supplemented with 2 mg/kg FLA, and (3) the basal diet supplemented with 2 mg/kg XOS. At 21 and 42 days, the growth performance index values and short-chain fatty acid (SCFA) concentrations in the cecum were quantified. Furthermore, immunoglobulin G (IgG) and plasma interleukin 2 (IL-2) as well as mRNA expression of LPS-Induced TNF-alpha Factor (LITAF), Toll-like receptor-5 (TLR5) and interferon gamma (IFNγ) in the jejunum were quantified. The results showed that administration of XOS or FLA to chickens significantly improved the average daily gain. Supplementation with XOS increased acetate and butyrate in the cecum, while FLA supplementation increased propionate in the cecum. An increase in plasma IgG was observed in XOS-fed 21-day-old broilers, but FLA supplementation decreased IgG in the plasma of 42-day-old broilers and increased plasma IL-2. Furthermore, FLA or XOS supplementation downregulated mRNA expression of IFNγ, LITAF and TLR5. The above data suggest that addition of XOS and FLA to the diet could improve the growth performance of broilers and reduce the expression of cytokine genes by stimulating SCFA.

【 授权许可】

Unknown