Abstract
A 4-year old Romanov ram with a history of anorexia, severe depression, and anuria for 4 days was referred to the Veterinary Teaching Hospital of Lorestan University. In the clinical examinations of the ram, no penile protrusion from prepuce, pain, straining; decreased body temperature; and increased heart rate and respiration rate were observed. For further evaluation, the blood sample was taken, and ultrasound of the abdominal area and ultrasound-guided cystocentesis were performed. The results indicated dehydration; leukocytosis; increased serum urea, creatinine, magnesium, and cholesterol; and decreased serum calcium concentrations. The ultra-sonographic findings demonstrated that the bladder was swollen and full of urine, however, without rupture. Despite the treatment, the ram was culled after 5 days and necropsy for investigating macroscopic changes, and tissue sampling was done. Macroscopic examination indicated a fibrinopurulent layer around the right kidney, and jagged stones with various sizes and shapes in the kidney and urinary tract were observed. Microscopic results showed atrophy and degeneration of renal tubules, destruction of tubules and glomeruli, fibrosis of the kidney, and increase in the thickness of the bladder wall.
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