9 months old calf was died and brought for postmortem examination at College of Veterinary Science, Rajendranagar, Hyderabad. After opening of the carcass, peritoneum was filled with straw coloured and foul smelling fluid. All organs were severely congested but the kidneys were edematous with dilated pelvis. Uroperitoneum was observed because of rupture of urinary bladder. The mucosa of bladder was showing streaks of haemorrhages, ulcers and hematoma. Urethra was fibrosed and showed liths in the lumen. Based on the examination it was confirmed as urolithiasis. Urethral obstruction has been extensively reported in ruminant species. Affections of urinary tract in ruminants such as congenital anomalies like patent urachus, urethral dilatation and acquired affections like obstructive urolithiasis leading to urethral or urinary bladder (UB) rupture. Hence, it is important to limit and balance feeding of concentrate to ruminants. The best feeding regime is 70% roughage and 30% concentrate feed based on dry matter.
Key words: Urolithiasis, Calf