Transmissible viral proventriculitis (TVP) is a disease of chickens, mostly in broilers of 2–8 wk of age. Chicken proventricular necrosis virus (CPNV), a birnavirus, is the etiologic agent.

Por que as aves não têm dentes? Por Yuri Vasconcelos Atualizado em 22 fev 2024, 11h16 - Publicado em 18 abr 2011, 18h48 ...

During spring 1989, thirty-three whooper swans (Cygnus cygnus) died at Lake Miyajima in Hokkaido, Japan; 15 were examined. The birds were diagnosed as having subacute lead poisoning due to ingestion ...