title: [Acidification of the stomach contents of weaned piglets--effect of feed quantity and composition].
abstract: The pH in the stomach chyme (5-8 hours past offering the diet) of reared piglets was strongly correlated to the ingested feed quantity, a complete acidification of the stomach contents occurred in restrictively fed piglets (15 g diet/kg BW) only. Feeding ad libitum resulted in comparable low pH values in the fundus and pylorus region only, whereas in the cardiac region high pH values (5-6.5) were observed. Formic acid as feed additive (5 ml/kg diet) did not influence the pH in stomach contents significantly, on the other hand the ingestion of a diet with high CaCO3 content (59 g Ca/kg DM) prevented the acidification of the stomach chyme totally. The variation of pH-values in the different areas within the stomach was caused mainly by the variation of hydrochloric acid concentrations, the influence of lactic acid concentration was negligible.
authors.affiliation: Institut für Tierernährung, Tierärztlichen Hochschule Hannover.
authors.forename: J
authors.initials: J
authors.lastname: Kamphues
mesh_terms: D000821:Animal Feed; D000818:Animals; D002119:Calcium Carbonate / Q000008:administration & dosage; D004435:Eating; D005561:Formates / Q000008:administration & dosage; D005766:Gastrointestinal Contents / Q000737:chemistry*; D006851:Hydrochloric Acid / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007773:Lactates / Q000032:analysis; D019344:Lactic Acid; D013552:Swine / Q000378:metabolism*; D014886:Weaning
chemical_list: D005561:Formates; D007773:Lactates; C030544:formic acid; D019344:Lactic Acid; D002119:Calcium Carbonate; D006851:Hydrochloric Acid
vernacular_title: Die Azidierung des Mageninhalts bei Absetzferkeln--Einflüsse von Futtermenge und -zusammensetzung.