Effects of graded levels of dietary phosphorus on bone mineralization in the very young poult.
An experiment was conducted to determine the effects of graded levels of dicalcium phosphate on bone mineralization in 1 and 3-week-old poults. Corn-soybean meal diets calculated to contain 1.5% calcium and either .35, .55, .75, .95, or 1.15% available phosphorus were fed to battery brooder reared poults for 3 weeks. Body weights and percent tibia ash were determined at 1 and 3 weeks. Body weight was not significantly affected by dietary phosphorus at either 1 or 3 weeks of age. Percent tibia ash was significantly greater in 1-week-old poults receiving a minimum of .75% available phosphorus. In 3-week-old poults, maximum tibia ash was obtained with with a minimum of .55 available phosphorus. This study suggests the level of dietary phosphorus necessary to achieve maximum tibia ash in 3-week-old poults is not sufficient for maximum tibia ash in 1-week-old poults.
D000375:Aging; D000818:Animals; D001835:Body Weight / Q000187:drug effects; D001846:Bone Development / Q000187:drug effects*; D004032:Diet; D008297:Male; D010758:Phosphorus / Q000494:pharmacology*; D014422:Turkeys / Q000254:growth & development*
D010758:Phosphorus