[Frequency and diagnosis of chronic changes in the mammary glands of sows (abattoir findings)].

The mammary glands of 1000 slaughtered sows were examined with regard to defects in teats, skin and parenchyma. For its clinical importance it is to be emphasized that 23% of all sows showed symptoms of chronic mastitis (phlegmon, abscess, granuloma, fibrosis). It can be expected that a thorough examination of the porcine mamma during the stage of involution will discover disturbances of nursing, caused by lesions in the parenchyma or in the lactiferous ducts.