CALCIUM AND PHOSPHORUS CONTENT OF STRONG AND WEAK CHICKS FROM HENS WITH AND WITHOUT CALCIUM CARBONATE IN THEIR DIET

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Abstract
A buttermilk-grain ration with and without supplemental CaCO3 in the form of oyster shell was fed to year-old White Leghorn hens whose egg-laying capacities were approximately equal. Results show that the CaCO3 addition increases the number of eggs, weights of eggs, shells, contents of shells, and dry weights of chicks hatched. Quantity and percentage of P are approximately the same in strong chicks as in weak chicks. Quantity and percentage of Ca are less in weak chicks than in strong chicks.

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