牛至油对成年蛋鸡生长性能和免疫功能的影响

发布时间：2018-06-28 18:49

本文选题：牛至油 + 蛋鸡　；参考：《中国兽医学报》2017年06期

【摘要】：本试验旨在研究不同水平的牛至油添加对蛋鸡生产性能及免疫功能的影响。选取30周龄海兰灰商品蛋鸡300只,随机分为5组(每组6个重复,每个重复10只):对照组饲喂基础饲粮,试验A、B和C组饲喂分别添加50,100和150mg/kg牛至油的试验饲粮,抗生素组饲喂添加100 mg/kg硫酸抗敌素的试验饲粮,试验期60d。结果表明:整个试验期各组间蛋鸡日采食量无显著差异(P0.05),A和B组蛋鸡产蛋率显著高于对照组(P0.05),料蛋比显著降低(P0.05);A、B和C组蛋鸡血清中免疫球蛋白IgG含量比对照组有显著提高(P0.05);试验30和60d,A组蛋鸡血清新城疫抗体滴度显著高于对照组(P0.05);牛至油对蛋鸡脾脏指数无显著性影响(P0.05);A组蛋鸡脾脏中的CD4+百分含量比对照组有所提高(P0.05),CD8+百分含量显著低于对照组(P0.05),而CD4~+/CD8~+显著升高(P0.05);A组脾脏中IL-2和IL-4mRNA的表达量显著升高(P0.05)。由此可见,饲粮添加牛至油能提高蛋鸡的生产性能和免疫功能,以50mg/kg牛至油为最适添加量。
[Abstract]:The purpose of this study was to study the effects of different levels of oregano oil on the performance and immune function of laying hens. Three hundred commercial Hailan grey laying hens aged 30 weeks were randomly divided into 5 groups (6 replicates in each group, 10 in each): the control group was fed with basic diet, and the control group was fed with 50100 and 150mg/kg oregano oil, respectively. The antibiotic group was fed with 100 mg/kg dichlorfon sulfate for 60 days. The results showed that there was no significant difference in daily feed intake among the three groups (P0.05). The laying rate of the layers in groups A and B was significantly higher than that in the control group (P0.05), and the feed to egg ratio was significantly lower (P0.05). The content of immunoglobulin IgG in the serum of the layers in groups A and C was significantly lower than that in the control group (P0.05). The titer of serum Newcastle disease antibody in group A was significantly higher than that in control group (P0.05), and the spleen index of laying hens was not significantly affected by oregano oil (P0.05). The percentage of CD4% in spleen of laying hens in group A was higher than that in control group (P0.05). The content of IL-2 and IL-4 mRNA in spleen of group A was significantly higher than that of control group (P0.05), while the expression of IL-2 and IL-4 mRNA in spleen of group A was significantly higher than that of control group (P0.05). It can be seen that diet supplemented with oregano oil can improve the performance and immune function of laying hens, and 50mg/kg oregano oil is the most suitable additive.
【作者单位】：黑龙江八一农垦大学动物科技学院;
【基金】：国家自然科学基金资助项目(31272624) 黑龙江省普通本科高校青年创新人才培养计划资助项目(UNPYSCT-2015087) 黑龙江八一农垦大学博士科研启动基金资助项目(XYB2014-12)
【分类号】：S831.5

【参考文献】