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Retention of minerals from activated sludge in growing chicks

Retention of minerals from activated sludge in growing chicks

Nutrition Reports International 29(3): 511-518

Activated sludge included into the diet of broiler-type chicks at 20% level supported normal growth without adverse effects. The mineral composition of the local sludge caused a substantial increase of Fe and Zn levels in the diet. Cd levels did not exceed normal feed levels. Liver and kidney of the chicks fed sludge-containing diet showed increased concentrations of Fe and Zn, compared with control, but the absolute amounts were in the range found normally in chicks. The greater amounts of minerals consumed by the sludge-fed than by control chicks were almost entirely excreted. The retention of all elements, but Zn, was similar to that of control chicks. Zn retention, although significantly higher than control, was relatively very small, compared with the amounts consumed. The mineral composition of the local sludge does not prevent the use of activated sludge as feed ingredient for broilers.

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Accession: 001246800

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