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Case Report
12.
Tetrameres infection in local
poultry in Katsina state, Nigeria -
J. kamani, C. A. Meseko, A. T. Oladokun, A. E
Tafarki, I Abba and G. I. Dogo
Vet World. 2010; 3(3): 130-132
Abstract
We report an outbreak of Tetrameres americana in a
semi intensive flock of local poultry in Katsina
State, Nigeria causing mortality of 40% in chicken
and 57% in turkeys, approaching Newcastle Disease
and Avian influenza in mortality. Presence of
reddish spots on the serosa of proventriculus was
initially mistaken for pin-point haemorrhages, thus
a presumptive diagnosis of Newcastle disease.
However, on gross pathological examination, the
reddish spots were identified as gravid females of
Tetrameres americana embedded in the serosal surface
of the proventriculus of the chicken and turkeys.
Tissue homogenates from dead birds were negative for
Newcastle disease and Avian influenza viruses by
rapid antigen detection and isolation in hen’s
embryonated eggs. Recently, we had reported
infection due to Tetrameres fissispina in local
poultry population in Taraba State, Nigeria causing
high mortality at the time Avian influenza outbreaks
were initially confirmed in both local and
commercial poultry flocks in Nigeria. It is thus
important to investigate the epidemiology of this
parasite and its contribution to mortality and
economic losses in poultry industry in Nigeria.
Key words: Tetrameres americana, Mortality,
Local poultry, Katsina, Nigeria, Avian Influenza.
