动物营养学报2016，Vol.28Issue(4)：1193-1198,6.DOI:10.3969/j.issn.1006-267x.2016.04.030
绞股蓝内生真菌 JY25胞外多糖对蛋雏鸡生长性能和肠黏膜免疫功能的影响
Effects of Extracellular Polysaccharide Extracted from Gynostemma pentaphyllum Endophytic Fungi JY25 on Growth Performance and Intestinal Mucosa Immune Function of Laying Chicks
摘要
Abstract
The experiment was to investigate the effects of extracellular polysaccharide extracted from Gynos-temma pentaphyllum endophytic fungi JY25 ( JY25P for short) on the growth performance and immunologic function in the intestinal mucosa of laying chicks. Three hundred healthy one-day-old Sanhuang laying chicks were randomly divided into 5 groups with 3 replicates in each group and 20 chicks per replicate. Chicks in the blank control group ( group Ⅰ) were drenched with sterile water, and in group Ⅱ, Ⅲ and Ⅳ were drenched with 0.04%, 0.08% and 0.12% JY25P respectively, while in groupⅤ ( positive control) were drenched with 0.08% Astragalus polysaccharide. The results showed as follows: compared with group Ⅰ, 1) the average daily gain in groupⅣwas significantly improved by 15.86% ( P<0.05) and the feed/gain in groupⅣwas ex-tremely significantly reduced by 24.13% ( P<0.01);2) during all periods of the experiment, the serum New-castle disease antibody titer in group Ⅲ, Ⅳ and Ⅴ was significantly increased ( P<0.05); 3) at 15 and 20 days of age, the contents of interleukin-4 ( IL-4) and interferon-γ ( IFN-γ) in intestinal mucosal of chicks in group Ⅳ were extremely significantly increased (P<0.01), while the secretory immunoglobulin A (SIgA) content or the proportion of IFN-γ to IL-4 was not changed significantly (P>0.05). The conclusion is that chicks drenched with 0.12% JY25P get excellent performances on growth and Newcastle disease antibody titer, and 0.12% JY25P can enhance the secreted contents of IL-4 and IFN-γ, which represented non-specific im-mune function in intestinal mucosal, and also maintain the body’ s immune balance. Thus it can be seen that JY25P has the potential application prospect.关键词
JY25胞外多糖/蛋雏鸡/生长性能/肠黏膜免疫/新城疫抗体效价Key words
JY25 exopolysaccharides/laying chicks/growth performance/intestinal mucosal immunity/Newcastle disease antibody titer分类
农业科技引用本文复制引用
焦志强,王雪琴,张慧茹,兰亚莉..绞股蓝内生真菌 JY25胞外多糖对蛋雏鸡生长性能和肠黏膜免疫功能的影响[J].动物营养学报,2016,28(4):1193-1198,6.基金项目
河南省教育厅自然科学项目科学技术重点研究项目(15A180013) （15A180013）
