In vivo Study on Absorption of Manganese as Different Manganese Sourcesby Ligated and Perfused Intestinal Segments of Broilers
This study was conducted to compare the absorption of organic manganese with inorganic manganese by ligated and perfused intestinal segments. A completely random design was applied to five treatments of different manganese sources, which were MnSO_4·7H_2O, Mn-Gly chelate, Mn-Met chelate, the mixture of MnSO_4 and glycine, the mixture of MnSO_4 and methionine.Thirty male broilers at the age of 4 weeks were randomly allotted to one of the five treatments for six replicates of one bird each. The duodenum, jejunum and ileum of each bird were used as one replicate of corresponding intestinal segments. The results indicated that ileum was the main site of manganese absorption for broilers when intestinal segments were ligated and perfused in vivo. The absorption of Mn as ‘complexed’ organic manganese was higher than that of inorganic manganese in the ligated and perfused intestinal segments of broilers. As a ligand, methionine was more effective in facilitating Mn absorption than glycine.