産卵鶏におけるリンとカルシウムの代謝に関する研究-2-

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These experiments were planned to investigate the calcium metabolism and requirement of calcium of laying hens.The basal diet used in these experiments were about the same diet that were used in the previous experiments, reported on this journal. All experimental diets contained 0.70% of phosphorus, and the calcium contents were 1.46%, 3.09% and 4.5%, respectively.The experimental methods used in these experiments were exactly the same that were used in the previous experiments.As a result of these experiments, it was made clear that the balance of the closest to the ±0 line was 3.09% in calcium. From these facts, it was found that the proper requirement of calcium for caged White Leghorn hens was about 3.00 per cent.Through the results of the above experiments and the previous experiments, it was found that the proper requirements of the phosphorus and calcinm for caged White Leghorn hens, when their rate of egg production was normal, were about 0.70% and 3.00%, respectively.
社団法人日本畜産学会の論文