Studies on ruminant urolithiasis I-the effect of feeding fattening rations on bulls: a field study

The question of urolithiasis in fattening bulls constitutes one of problems that deserves serious considerations. If not diagnosed in a suitable time, thus promptly treated, animals harboring calculi may develop a fatal obstructive urolithiasis. Previous reports showed that death losses were over 3%. However, the incidence of calculi is usually allotted to metabolic disorders of which a imbalanced nutrition stands by. The present work was undertaken to investigate the calculi-provoking effect of commercially formulated rations commonly used in different fattening farms in Egypt. This was achieved by monitoring the serum biochemical changes occurring during the use of these rations throughout the different fattening stages