The prevention of chick growth depression due to dietary lead by increased dietary calcium and phosphorus levels.
| Autor: | Berg LR, Nordstrom JO, Ousterhout LE |
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| Jazyk: | angličtina |
| Zdroj: | Poultry science [Poult Sci] 1980 Aug; Vol. 59 (8), pp. 1860-3. |
| DOI: | 10.3382/ps.0591860 |
| Abstrakt: | 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. |
| Databáze: | MEDLINE |
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