Objective: The aim of this work was to determine the average of dairy cows mortality rate in three dairy herds of Ilam province. In addition the most common causes of death among the cows were determined. Materials and Methods: The information was gathered from three dairy herds’ record cards of dead cows and analyzed using Excel. The average gross mortality rate for the three farms was 7.8%. The most frequent causes of death when considering the three farms together were calving problems and digestive disorders. Results & Conclusion: Most of the cows died when they were seven years old, with the first stage of the lactation period showing the highest percentage of dead cows. It was concluded that there is a high mortality rate in dairy farms and that the causes of death were different depending on the farm, but in general they were related to calving, and digestive disorders.
