Tissue Uptake of Manganese as a Measure of Its Bioavailability for Chicks
Inorganic forms of Mn are used routinely as supplemental dietary sources of the element for livestock and poultry. Early research indicated that most chemical forms of manganese were of equal value to the chick, while studies by Watson et al. (1971) suggested that there were differences in the biological availability of manganese among commercially available feed grade products. The latter studies were conducted with a purified diet containing about 5 ppm manganese. Recently, studies have been conducted with manganese sources for chicks using a method described by Ammerman et al. (1985). This method is based on tissue uptake of the element when elevated levels are fed for short periods of time in a diet based on natural ingredients.
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