摘要
在同一试验条件下比较了HVT—Fc_(126)+CHV—SB_1双价苗和HVT—Fc_(126)疫苗的免疫效力.结果表明,双价疫苗可抵抗BjMDV—京1株强毒的攻击;根据免疫剂量的不同,其近期保护指数依次为67%、78%、89%和100%,HVT疫苗为44%;其远期保护指数依次为80%、90%和100%,HVT疫苗为50%.双价疫苗的保护效力明显高于HVT—FC_(126)疫苗.
A comparison of the immune efficacies of a bivalent vaccine HVT -Fcl26 plus CHV-SB1 and vaccine HVT-Fcl26 aggainst Marek's disease was made under the identical experiment conditions. The results indicated that the birds immunized with bivalent vaccine could resist the challenge of highly virulent strain BjMDV- 1 to such an extent that the protective indices in the near future are 67%, 78%, 89% and 100% and the forward indices are 80%, 90% and 100% according to the doses vaccinated, whereas those conferred by CHV-SB1 are merely 44% and 50% respectively. The immune efficacy of the bivalent vaccine is significantly higher than that of HVT-Fcl26.
关键词
马立克氏病
双价疫苗
免疫效力
Marek's disease
bivalent vaccine
immune efficacy
