The displacement of abomasum is the most serious pathology in cows, which often has a lethal outcome. From this pathology, the best individuals in the herds of dairy cows are affected. The incidence of abomasum displacement is different. Depending on the breed, the level of production and the nature of nutrition, abomasum displacement affects 4-5% of cows. This pathology has been diagnosed in Tetovo, Macedonia, in dairy cow herds where high production levels are achieved varying from 5000 to 6600 liters of milk per head during lactation period. The pathology of abomasums displacement can occur to the left, to the right, and may also come to the torsion of abomasum. The abomasums displacement ratio to the left and to the right is 2:1.
