校门口的小鸡🐣去哪儿了？中国的蛋鸡🐓产业经历了什么？What has China's egg-laying hen industry gone through?【柴知道】

你还记得当年校门口的小鸡吗？如果你曾把它们养大过，会发现其中绝大多数会长成白色的大公鸡——和你印象中的七彩大公鸡两模两样。这期视频，我们就认真探究一下校门口的小鸡来自哪里，为什么又在这些年间逐渐消失了？透过校门口小鸡的变化，我们还能看到中国养鸡产业变迁的一个剖面。

Do you remember the chicks sold outside school gates back in the day? If you ever raised them, you'd find that the vast majority grew into large white roosters—completely different from the colorful roosters you remember. In this video, we'll delve into where those school gate chicks came from and why they gradually disappeared over the years. Through the changes in those school gate chicks, we can also see a cross-section of the evolution of China's chicken farming industry.

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