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Publication type: Journal Article
Document type: Full Paper

Year: 2019

Author(s): Sulejmanović, T; Grafl, B; Bilić, I; Jaskulska, B; Hess, M

Title: PCR and serology confirm the infection of turkey hens and their resilience to histomonosis in mixed flocks following high mortalities in toms.

Source: Parasit Vectors. 2019; 12(1):228

Authors Vetmeduni Vienna:

Bilic Ivana
Grafl Beatrice
Hess Michael
Jaskulska Barbara
Sulejmanovic Tarik

Vetmed Research Units
University Clinic for Poultry and Fish Medicine, Clinical Unit of Poultry Medicine

Histomonosis, caused by the protozoan parasite Histomonas meleagridis, is a severe disease especially in turkeys where it can cause high mortalities. Recently, outbreaks were described in which turkey hens showed no clinical signs despite high mortalities in toms, from which they were separated only by a wire fence. The present study investigated three similar outbreaks of histomonosis whereby in two of them only a few hens were being affected and none in the third. Hens from all flocks were kept until end of production and slaughtered as scheduled. However, in all three cases, the disease progressed in toms reaching nearly 100% within two weeks.

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