Effect of Diet Composition Upon the Performance of Laying Hens Receiving Curacao Island Phosphate

Two experiments, each of ten months duration, were conducted with egg production-type pullets (Kimber and DeKalb) housed in individual laying cages. Yellow corn and degerminated corn basals were employed with phosphorus supplementation from either Curacao Island or dicalcium phosphate to provide total phosphorus levels of 0.50, 0.65 or 0.80%. All diets contained 3.0% calcium with supplemental calcium being supplied from ground limestone. Six replicate groups (five birds each) received each dietary treatment for ten 28-day periods. Hen-day egg production, daily feed intake, feed/dozen eggs, egg... Mehr ...