不同浓度壳寡糖对蛋用鹌鹑免疫功能的影响

试验旨在研究日粮中添加不同浓度壳寡糖对蛋用鹌鹑免疫功能的影响。选用1日龄朝鲜鹌鹑240只,随机分为6组,每组2个重复,每个重复20只,即Ⅰ组饲喂基础日粮,Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组分别在基础日粮中添加0.01%、0.05%、0.10%、0.15%和0.20%壳寡糖,试验期为35 d。结果表明,壳寡糖可以显著提高鹌鹑法氏囊指数(P<0.05),极显著提高胸腺指数和脾脏指数(P<0.01);显著提高鹌鹑血清免疫球蛋白G(IgG)和M(IgM)的含量(P<0.05);可以维持较高的血清新城疫抗体效价(P<0.05),显著提高补体C3含量(P<0.05)。因此,日粮中添加壳寡糖可以促进鹌鹑免疫器官的生长发育,提高机体免疫力,增强抵抗传染病的能力,其中以添加0.05%壳寡糖效果较好。

Effects of Different Concentration of Chitosan Oligosaccharide on Immune Function in Layer Quails

The experiment was designed to study the supplementing with different concentration of chitosan oligosaccharide on immune function of layer quails in diet.Selected 1 day old 240 Korean quails were divided into 6 groups randomly,2replicates in each group and 20 quails per replicate.Ⅰgroup was fed with the basal diet,Ⅱ、Ⅲ、Ⅳ、Ⅴ and Ⅵ groups were fed with the adding of 0.01%,0.05%, 0.10%, 0.15% and 0.20% chitosan oligosaccharide. Trial period was 35 days. The results showed that the chitosan oligosaccharide could significantly improve the quails bursal relative weight (P<0.05), significantly increase the relative weight of thymus and spleen relative weight (P<0.01),significantly improve the quails serum IgG and IgM content (P<0.05),maintain high serum antibody titer against Newcastle disease virus (P<0.05),significantly increase the content of complement C3 (P<0.05).Therefore,adding chitosan oligosaccharide could promote the growth and development of immune organs of quails and improve immunity,enhance the ability of resistance to infectious diseases, adding 0.05% chitosan oligosaccharide effect was the best.