与上述相反的措施，可以提高蛋重。
开产时的蛋鸡体重影响蛋黄大小，进而影响蛋重。
Body weight at point of lay influences yolk size, which, in turn, influences egg weight.
蛋壳占蛋重比、蛋壳厚度及蛋壳密度无明显变化。
However there were no changes in egg shell thickness, egg shell percentage and egg shell density.
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