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Abstract
The objective of these experiments was to evaluate trace mineral supplementation in neonatal and nursery swine. The first experiment determined there was a linear response to the increasing levels of supplementary manganese in nursery pig diets. Manganese superoxide dismutase activity tended to be lower in treatment groups supplemented with less selenium and manganese. The second experiment evaluated the use of a multi-element trace mineral supplementation product on piglets. There was no significant effect of the product on average daily gain or survivability, but there were significant effects of birthweight on average daily gain and sire on survivability.