在服务满9个月之后，这些母鸡通常会被执行安乐死，因为它们再也不能产下“最优质的鸡蛋”了，罗宾逊表示。

After nine months of service, they are typically euthanized because they can no longer lay 'optimal eggs,' Mr. Robinson said.

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农业专家们也表示，这样罕见的情况实则是大自然的一种变异，如果母鸡在生蛋时受到惊吓，就可能产下异常的鸡蛋。

Experts say the rare phenomenon is just a quirk of nature and can occur if the chicken receives a shock during egg production.

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人道“饲养的鸡染病的几率会减小，而有活动空间的鸡会更健康，则会产下更健康的鸡蛋。”

Humanely raised hens will be healthier as they will have room to move around in addition to being less susceptible to disease, and will therefore lay healthier eggs.

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