Fig 1. Immunization and antibody detection in the serum of SF and WL.

Vaccines, injection routes, doses, and sample times are listed (a). Lower antibody levels against H5N1 Re4 were detected in the serum of SF, and obvious differences were calculated between SF and WL in females at 6 and 10 weeks of age (b). Antibody level against infectious bursal disease virus (IBDV) was low in the serum of SF, but no difference was detected between the SF and WL (c). *P < 0.05.