甘草多糖对雏鸡新城疫抗体效价和体质量的影响

了解甘草多糖对雏鸡新城疫抗体效价和体质量的影响。将40只1日龄AA雏鸡随机分为4组,每组10只。第Ⅰ组为对照组,第Ⅱ组、第Ⅲ组和第Ⅳ组为试验组。各组均用新城疫低毒力活疫苗(lasota株)在2日龄时进行滴鼻点眼免疫1羽份,在9日龄肌内注射1mL进行加强免疫,其中对照组不加甘草多糖进行免疫;第Ⅱ组、第Ⅲ组和第Ⅳ组在鸡疫苗中分别加入质量浓度为5、10和15 g/L的甘草多糖。分别在2日龄、9日龄、16日龄对各组鸡只进行全体空腹称量并记录结果,同时对各组试验鸡分别随机抽取6只采血,分离血清,进行新城疫(ND)抗体效价检测。结果表明,甘草多糖对雏鸡免疫力和生长性能有一定作用,其中10 g/L的甘草多糖作用最显著。

Effect of Glycyrrhiza Polysaccharide on Antibody Titer of Newcastle Disease and Body Mass of Broilers

This article had studied effect of Glycyrrhiza polysaccharide on antibody titer of Newcastle Disease and body mass of broilers.Forty of one-day-old broilers were stochastically divides into four groups: Each group of 10,the first group is the comparison group,the others were experimental groups.Lasota strain,low toxicity live vaccine of the Newcastle disease was dipped into the nose and eyes of a 2-day-old broiler in each group,and the immunity was strengthened with 1 mL intramuscular injection at 9-day-old...