G. N. , A.; O. N. , O. Immunity to Newcastle disease and virus shedding following vaccination of commercial layer chickens in Enugu State, Nigeria . Nigerian Journal of Animal Production, [S. l.], v. 50, n. 5, p. 59–67, 2024. Disponível em: https://njap.org.ng/index.php/njap/article/view/8031. Acesso em: 10 nov. 2024.