title: [Control of Ornithonyssus sylviarum (Canestrini and Fanzago, 1877) (Acari: Macronyssidae) infestation in commercial laying hens by using Azadirachta indica extract].
abstract: This study evaluated the effectiveness of a neem extract-based product to control O. sylviarum infestations in commercial laying hens. The birds were divided in 3 groups, which received 2, 3, or 4 applications of the product at 7 day intervals. The results obtained allow the conclusion that the neem extract at 2% is effective to control infestations by O. sylviarum, and at least 3 sprays of the product are required weekly for an effective control of the parasite.
authors.affiliation: Unidade Laboratorial de Patologia Avícola, Centro Avançado de Pesquisa Tecnológica do Agronegócio Avícola, Instituto Biológico, SP, Brasil.
authors.forename: Nilce M
authors.initials: NM
authors.lastname: Soares
authors.forename: Edna C
authors.initials: EC
authors.lastname: Tucci
authors.forename: Elizabeth A L
authors.initials: EA
authors.lastname: Guastalli
authors.forename: Helena
authors.initials: H
authors.lastname: Yajima
mesh_terms: D000053:Acari / Q000502:physiology*; D000818:Animals; D031601:Azadirachta; D002645:Chickens / Q000469:parasitology*; D003140:Communicable Disease Control / Q000379:methods; D010936:Plant Extracts; D011201:Poultry Diseases / Q000469:parasitology*
chemical_list: D010936:Plant Extracts