In vitro uptake of chromium from inorganic and organic sources across everted intestinal sacs of Poultry*

Abstract

An attempt was made to ascertain the in vitro passage of chromium across the mucosal wall of duodenum,jejunum and ileum of broiler chicken. For this, solutions of potassium chromate, chromium chloride and chromium yeast complex containing 20,40 or 6O mg Cr/ml were incubated in the everted sacs of the respective segments of all small intestine. The uptake of chromium was identical from potassium chromate and chromium yeast complex in all the 3 segments of the small intestine. Chromium chloride was the least efficient source of available chromium. The trend of the investigation indicated that jejunum was the comparatively preferred site for chromium absorption whatsoever the source of chromium might be chromium absorption from chromium yeast complex enhanced with incubation time as the chronmium concentration in the mucosal side of the everted sac increased though such a trend was not observed in general with potassium chromate or chromium chloride. It was suggested that amongst the inorganic sources of supplemental Cr K-chromate might be explored as a potential source of supplementation instead of Cr-chloride in broiler chickens.