[Pathohistological changes in the mammae and sex organs of sows with the MMA syndrome].

Studied were morphologically the udder and genitalia of 13 sows with the mastitis-metritis-agalactia syndrome (MMA) and of 3 normal sows from the first to the third day after farrowing. In 53.80 per cent of the cases there were histological changes of acute catarrhal and purulent mastitis, and in 23.08 per cent--degeneration of the glandular epithelium, 23.08 per cent having hypoplasia of the milk alveolae. In 61.80 per cent of the cases the changes in the udder were accompanied with changes in the uterus (catarrhal and purulent endometritis). There were in the ovaries of both the diseased and the normal sows persisting corpora lutea and massive atresia of secondary follicles.