Abstract: Abomasal disorders are one of the most important problems in large scale dairy herds, especially in high producing cows. Prevalence of abomasal disorders was studied in a dairy farm with 1400 milking cows. Eighty eight out of 2299 parturient cows (5.59%) affected with different abomasal disorders. LDA recorded as the most prevalent condition (95.45 %) and right anatomical disorders of the abomasum recorded as 4.55% of the cases. Total prevalence of abomasal disorders in heifers (3.59%) did not show any difference with cows (5.1%). Prevalence of the disease in low producing cows is less than moderate and high producing and in >6 parturition was less than other parturitions; however the highest prevalence recorded in third parturition. Recorded cases were increased in autumn that was significantly higher than spring and summer in heifers but no significant difference recorded in cows.