【摘要】 本试验选取168只45周龄未接种大肠杆菌疫苗且体重及产蛋率相近的商品代尼克珊瑚粉产蛋鸡,采用均匀试验设计方法,设7个处理(包含1个基础对照组,1个疫苗对照组。除基础对照组外,其他各组均接种大肠杆菌疫苗,所用抗原为大肠杆菌为K88、K99、987p标准菌株),每个处理4个重复,每个重复6只鸡。研究了在日粮中添加纳米硒、碘对鸡蛋中抗猪大肠杆菌卵黄抗体产量的影响。结果表明:蛋鸡日粮中添加纳米硒、碘能显著提高卵黄抗体产量(P<0.05),且纳米硒起主要作用。纳米硒、碘添加量为2.12,4.00 mg/kg时,卵黄抗体浓度达到13.48 mg/mL,比基础对照组提高36.53%(P<0.05),比疫苗对照组提高23.63%(P<0.05)。更多还原

【Abstract】 One hundred and sixty eight 45-wk-old commercial Nic-T laying hens were assigned randomly to seven treatments,which included a basal control,a vaccines control and five experimental groups with 4 pens per treatment.The laying hens used in this experiment had never immunized with E.coli before.There were no significant differences in weights and egg production among the groups.A uniform design method was employed to study the effect of nano-selenium and iodine on specific egg yolk antibody production in inoculated E.coli laying hens,and the standard bacteria of E.coli K88,K99,987p were used in this experiment.The results indicated that the diets with nano-se and Iodine could increase antibody concentration significantly(P<0.05).Furthermore,Nano-se played a more important role in antibody production.The supplement of nano-se and iodine was 2.12,4.00 mg/kg,the antibodies achieved 13.48 mg/mL,which was 36.53 %(P<0.05),23.63 %(P<0.05)greater compared to basal control,vaccines control respectively.更多还原