Bone Health or Performance? Adaptation Response of Genetically Divergent Chicken Layer Lines to a Nutritive Calcium Depletion.

Highly significant, negative regression coefficients ( β 1 ) between time of progressive Ca depletion and the laying rate were found in these lines, resulting in average values across the three depletion phases of β 1 = −1.94 (WLA), β 1 = −1.75 (R11) and β 1 = −1.93 (BLA).

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