为探索最佳的新城疫饮水免疫使用剂量,提高免疫效果,试验采取了2~5倍剂量新城疫Ⅳ系活疫苗于第7天对不同试验组进行饮水免疫,分别于第7、14、21、28、35、42天采血并测量HI抗体效价。结果表明,4倍量饮水免疫效果最佳。
To study the best dose of the Newcastle drinking water immunity, the test immuned Newcastle Ⅳ bacterin original dosage by 2 to 5 times in the seventh day, drawed blood samples in the 7th, 14th, 21th, 28th, 35th, 42th days and measured HI antibody titers. The results showed that the best was 4 times the amount of drinking water immunity.