[Etiological and pathogenetic aspects of diarrhea in piglets following weaning].

In this paper aetiological and pathogenic aspects of postweaning diarrhoea are discussed. Besides earlier data, particular attention is paid to recent results. Except specific serotypes of Escherichia coli and rotaviruses, feeding regimen as well as components in the feed are important aetiological factors. Villus shortening after weaning as well as the level of villus shortening are pathogenetically important. Recently recovered villi may be more sensitive to the toxic effects of Escherichia coli than not yet recovered villi. Sodium and fluid absorption in the large intestine are also pathogenetically important.