The effect of excess dietary manganese on uninfected and Ascaridia galli infected chicks

The effect of dietary manganese from two different sources on chicks (uninf ected and infected with Ascaridia galli) was studied. Chick diet was supple mented with 0.9 g Mn2+ kg(-1) food either in the form of MnSO4.H2O or 2Gly. MnCl2.2H(2)O for 20 days. Chicks were divided into six groups: group 0, co ntrol; group 1, control + MnSO4.H2O; group 2, control + 2Gly.MnCl2.2H(2)O; group 3, infected with A. galli; group 4, infected with A. galli + MnSO4.H2 O; and group 5, infected with A. galli + 2Gly.MnCl2.2H(2)O. Body weight, mo rtality, worm burden, and liver manganese content were investigated. Excess dietary manganese increased weights and manganese level, but mortality and worm burden were unaffected. A greater bioavailability of manganese from 2 Gly. MnCl2.2H(2)O was established.