Figure 1:
Representative VLV chicken breed. (A and B) adult VLV rooster and hen at the time of sample collection (38 weeks of age); (C) VLV in a confined ground area at the growing stage, and (D) caged hens at the laying stage.
Representative VLV chicken breed. (A and B) adult VLV rooster and hen at the time of sample collection (38 weeks of age); (C) VLV in a confined ground area at the growing stage, and (D) caged hens at the laying stage.