Clinical, haematological and biochemical study to cattle naturally infected with Theileria annulata in north of Basrah province

Abstract

A total of 447 cows , 114 cows were naturally infected with Theileria annulata clinically normal cows were served as control. The clinical result indicated that the cows exhibited signs of fever, enlargement of superficial lymph nodes , respiratory signs with corneal opacity, soft yellowish diarrhea with a subcutaneous accumulation of fluid. The blood examination showed the high level of parasitemia varied between 13-53% and observed all parasite stages; erythrocyte stage 69.43% the lymphocytic stage 25.43% while both stage (erythrocytes and lymphocytic)5.26%. The hematological parameter showed the Hypochromic macrocytic anemia with significant decreases in Hb(6.95±0.59) g/l , PCV(29.06±4.56)%, MCHC(24.71±4.55)%, RBCC(4689482±638753) 10/ mm , WBCC (5013.2±711.1)10/ mm , neutrophils(19±3.7)% while recorded a significant increases in the lymphocytes(69.74± 4.9)% and MCV(61.09±7.55)fl . The biochemical parameter recorded a significant increase in total serum bilirubin(1.19±0.40) and active serum enzyme ALT(19.77±2.94) and AST(67.98± 16.36)with recorded a significant decrease in the total serum protein( 4.27±0.40)and albumin(1.56±0.36)