The iron requirements of suckling piglets for the synthesis of haemoglobin are of at least 10 mg/day, but the sow's milk only contributes
See a clue in the article Drinking water supplementation with organic iron in lactating piglets
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Correct answer
The sow's milk contributes only 1 mg /day and, since the piglets have no access to soil, they need an exogenous supplement.
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