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鸡蛋孵成小鸡需要21天,鸡的整个胚胎发育阶段中前13天为分化期(从囊胚后期或原肠前期开始发育到鸡体各器官系统基本形成),后8天为生长期(从很小的鸡胚体长大成等待出壳的小鸡)。我们前一阶段的
It takes 21 days for the eggs to hatch into the chickens. The first 13 days of the chicken’s embryonic development stage is the differentiation stage (from the late blastocyst or pre-gut development to the basic formation of various organ systems in the chick) Chickens growing from tiny chicken embryos waiting for hatching). Our previous stage