[Redox potential of the gastrointestinal tract of swine of different ages].
The redox potential (ROP) was found to undergo negativation in all gastro-intestinal sections of piglets, from the time of birth to the age of three days. Negativation was relatively low in the small intestine, but it accounted for more than 300 mV in stomach and colon. ROP values recorded from stomach and rectum of weaned piglets were more negative with significance than those established from animals before weaning. ROP, as an important environmental factor in the gastro-intestinal tract, did not undergo significant change due to weaning which might support any conclusion as to pathogenesis of coli-enterotoxaemia, in spite of the implied change of feeding and keeping conditions. ROP in store pigs was found to be more or less one and the same, except for more positive values in the proximal jejunum, with most negative values being recordable from the stomach. Progressing age was found to be accompanied by sizeable ROP change in the gastro-intestinal tract of swine. ROP values in the distal jejunum and ileum of sows were more negative with significance than those recorded from store pigs, but values were more positive in the colonic cone and rectum. Unambiguous ROP negativation in the proximal and distal jejunum and ileum as well as in the gastro-intestinal tract of sows was accompanied only by moderate rise in overall anaerobic germ count. ROP values recorded from the colonic cone and rectum, where highest germ counts were detectable, were more positive than those recorded from any other intestinal section. Hence, gastro-intestinal ROP of sows is, probably, not controlled by metabolism of the germ flora.
D000375:Aging; D000818:Animals; D004064:Digestive System / Q000378:metabolism* / Q000382:microbiology; D005260:Female; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D013552:Swine / Q000378:metabolism*
Das Redoxpotential im Magen-Darm-Kanal von Schweinen unter-schiedlichen Alters.