The prevention of chick growth depression due to dietary lead by increased dietary calcium and phosphorus levels.
Increasing dietary lead concentrations from 0 to 2000 ppm linearly decreased the weight of two-week-old chicks to approximately 70% of that of the controls. The growth depression caused by the lead was lessened by increasing the dietary calcium and phosphorus levels and was completely counteracted by approximately 2.1% calcium with 1.4% phosphorus. As expected, increasing calcium and phosphorus levels up to 1.2% calcium and .8% phosphorus increased bone ash. Lead had no effect on bone ash.
D000818:Animals; D001835:Body Weight / Q000187:drug effects*; D002136:Calcium, Dietary / Q000494:pharmacology*; D002645:Chickens / Q000254:growth & development*; D007854:Lead / Q000378:metabolism / Q000494:pharmacology*; D010758:Phosphorus / Q000494:pharmacology*
D002136:Calcium, Dietary; D010758:Phosphorus; D007854:Lead