Embryonic growth was the fastest and growing same mass consumed tha lest energy during from the 12th to the 15th day.

 
  • 胚胎发育在第12孵化日龄到第15孵化日龄期间生长最快,生产单位重量的耗能最少,此期间虽是早成鸟胚胎低耗氧率时期,但又是快速生长的时期。
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