产蛋鸡饲粮锌和钙水平对蛋的品质和蛋中锌含量的影响
单安山;王安;许振英
Effects of Dietary Zinc and Calcium Levels on Egg Quality and Zinc Content in Egg of Layers
动物营养学报 . 1989, (01): 51 -56 . 

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