Chicks of highly maternal antibody were tested with vaccines of V4 strain and V4 clone-30 strain by oral administration, nasal drip and cohabitation.
本试验用V_4株、V_4株和克隆- 30株联合苗对高母源抗体的雏鸡进行了口服、滴鼻与同居感染免疫试验。
Chicks of highly maternal antibody were tested with vaccines of V4 strain and V4 clone-30 strain by oral administration, nasal drip and cohabitation.
本试验用V_4株、V_4株和克隆- 30株联合苗对高母源抗体的雏鸡进行了口服、滴鼻与同居感染免疫试验。
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