Clinical and hematological study of Trypanosoma brucei and Trypanosoma congolense in cattle in Mosul city, Iraq.
An outbreak of trypanosomosis was reported and subsequently investigated in Mosul city, Iraq. Twenty seven blood samples were received at the Clinical pathology Laboratory of the Veterinary Teaching Hospital, University of Mosul, from fifteen cows (2-5 years old) and twelve calves (10-12 months old) on different farms located around Mosul city. Clinical signs of the infected animals included fever, progressive weight loss, anaemia, and frequent recumbent position. Identification of trypanosome species was based on their motility using morphological differentiation on Giemsa or Leishman stains; this showed trypomastigotes which could be classified according to the biometrical data into T. brucei and T. congolense. A decrease was also observed in some blood parameters. To the author's knowledge, this is the first record of T. brucei and T. congolense infection in cattle. This study also suggested that trypanosomosis is associated with introduction of exotic breeds of cattle into Mosul, Iraq.