[Comparative clinical, bacteriological and pathohistological studies of the sex organs of infertile cows].

Investigations were performed with materials from 39 cows divided into two groups: I -- internal sexual organs of 29 cows slaughtered because of infertility; and II -- biopsy material from 10 cows that showed symptomies sterility. The same material was studied microbiologically and histopathologically by routine methods. The material was taken from the cervix, the uterus, and the horns. Bacteriologically, the presence was established of Str. uberis. E. coli, Str. dysgalactiae, Staph. et albus et citreus, Corynebacterium pyogenes, Proteus vulgaris, Str. agalactiae, Candida albicans, Clostridium sp., and others. Organisms were also isolated from the genitalia of cows showing no clinical symptoms of endometritis. Histologically, the cervix of the animals in the 1st group presented necrobiosis of the glandular epithelium, and reticulohistiocytic proliferation. Most characteristic were the changes in the uterine corpus where stasis, oedema, low necrobiotic epithelium of the glands, and a surrounding reticulocytic proliferation with the presence of lymphocytes and plasmatic cells were observed. It was found that no direct correlation between the histologic changes, the microbiologic, and the clinic results.