Copper is among elements and accompany in activation of many vital enzymes and its deficiency in animals can lead to various disorders. This research is conducted in order to clarify the role of copper in dairy cows anestrus complication and will be compared dairy cows with cyclic activity to clarify its role in the incidence of this complication. For this study, we referred to the dairy farms of Tabriz region and Anestros cows were identified. For this purpose, cows spent more than 60 days from parturtion and did not show signs of estrus undergo right rectal examination. After statistical data analysis, mean copper serum of healthy cows (with cyclic activity) was 124.12 and of anestrus Group was 99.59 μg/dl, respectively. besides the mentioned cases, particularly in young and in growing animals like heifers and belly and in rainful seasons like winter and spring, more attention should be paid to the copper deficiency problem.
