Data di Pubblicazione:
2009
Citazione:
Unusual avian mycobacteriosis in commercial brown layers / D. Gallazzi, G. Manarolla, T. Rampin, G. Sironi. - In: Proceedings of Western poultry disease conference and poultry health symposium. - ISSN 0094-8780. - 58:(2009 Mar), pp. 113-114. ((Intervento presentato al 58. convegno Western Poultry Disease Conference tenutosi a Sacramento, CA nel 2009.
Abstract:
An unusual outbreak of avian mycobacteriosis in 46-week-old commercial brown layers is described. Reduced feed intake, gradual drop in egg production and increased mortality rate were observed in the flock housed in Northern Italy. 8 birds were humanely euthanatized and necropsied. The birds were in poor body condition, with pale, shrivelled combs, and principally presented prominent orbital lesions. Grossly, multiple, variable-sized nodular lesions were found in the intestinal wall, liver, spleen, lungs, bone marrow and conjunctiva. Histologically, both visceral and orbital lesions displayed granulomatous nature with variable numbers of acid fast bacilli. Polymerase chain reaction confirmed Mycobacterium avium as the causative agent. The peculiarity of this outbreak of mycobacteriosis regards type and age of the affected birds and the uncommon involvement of the soft orbital tissues.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
D. Gallazzi, G. Manarolla, T. Rampin, G. Sironi
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