Uterine tube abnormalities in cattle.

A total of 250 reproductive tracts from nonpregnant cows were obtained from a slaughterhouse. Uterine tubes were tested for patency by infusing methylene blue solution, and gross lesions were recorded. Of the 500 uterine tubes, 24 were occluded (unilateral in 20 tracts and bilateral in 2 tracts), and 26 had gross lesions (unilateral in 16 tracts and bilateral in 5 tracts). Approximately one-half of the occluded tubes were not associated with gross lesions. Approximately one half of the tubes with gross lesions were patent.