动物营养学报2016，Vol.28Issue(11)：3429-3436,8.DOI:10.3969/j.issn.1006-267x.2016.11.009
卵黄免疫球蛋白对雏鸡生长性能和免疫机能的影响
Effects of Yolk Immunoglobulin on Growth Performance and Immune Function of Chicks
摘要
Abstract
This experiment was conducted to study the effects of dietary yolk immunoglobulin ( IgY ) on growth performance and immune function of chicks. Two hundred and forty one⁃day⁃old Roman rooster hens with same batch of hatching and similar body weight were randomly divided into 2 groups ( control and experi⁃mental groups) with 6 replicates in each group and 20 chicks in each replicate. Chicks in the control group were fed with a basal diet, and the others in the experimental group fed the basal diet supplemented with 0.1%IgY. The experiment lasted for 5 weeks. At the age of 1, 3 and 5 weeks, 2 chickens with average weight of each replicate were weighed, slaughtered, and the blood was collected for the serum immune parameters, and then the immune organ, jejunum chyme were taken and used for the determination of relevant indicators. The results showed as follows:1) compared with the control group, the average daily gain of chicks in experimen⁃tal group had a tendency to increased at the age of 1, 3 and 5 weeks (0.05<P<0.10). 2) The thymus relative⁃ly weight of chicks at the age of 1 and 5 weeks and spleen relatively weight of chicks at age of 1 week in exper⁃imental group were significantly higher than those in control group ( P<0.05) . The content of IgY in bursa of Fabricius, spleen and thymus of chicks at the age of 1 and 5 weeks in experimental group had no significant difference with what in control group (P>0.05). 3) The content of globulin, α⁃interferon interleukin⁃2 and the activity of lysozyme in serum of chicks at the age of 1 week, the content of total protein, globulin and in⁃terleukin⁃2 in serum of chicks at the age of 3 weeks, and the number of blood lymphocytes of chicks at the age of 5 weeks in experimental group were significantly higher than those in control group ( P<0.05) . 4) The con⁃tent of secretory immunoglobulin A in intestinal tract chyme of chicks at the age of 1 week in experimental group was significantly higher than that in control group ( P<0.05) . In conclusion, dietary supplementation of IgY can enhance growth performance and immune function at the age of 1 to 5 weeks. But from the perspective of improving immune function, the effect at early stage of brood ( 1 to 3 weeks of age) is more obvious.关键词
雏鸡/卵黄免疫球蛋白/生长性能/免疫机能Key words
chicks/yolk immunoglobulin/growth performance/immune function分类
农业科技引用本文复制引用
杨海明,巨晓军,王志跃,马尹鹏,马义国,张建平..卵黄免疫球蛋白对雏鸡生长性能和免疫机能的影响[J].动物营养学报,2016,28(11):3429-3436,8.基金项目
江苏省苏北科技发展计划（科技富民强县项目）（BN2015036）；江苏省农业三新工程项目（SXGC［2016］167）；淮安市重点研发计划（现代农业） （）
