笼养意思是在笼中喂养。随着家禽业的发展，家禽的饲养量增加，笼养技术正逐渐在生产中推广应用，且取得了良好的效果。家禽单笼饲养，采用人工授精技术，既提高了饲养密度，又能获得较高而稳定的受精率。
另外，曾有一条母鲨鱼在笼养六年之后生产。
And a female shark once gave birth after six years in captivity.
密歇根和加利福尼亚均通过法案禁止使用幽闭母鸡的鸡笼，俄亥俄州长曾宣布支持暂停修建新的笼养鸡舍。
Michigan and California have passed laws to outlaw cage confinement of hens, and Ohio's governor announced his support for a moratorium on the construction of any new cage layer facilities.
据位于（佛罗里达）白橡树保护中心的国际犀牛基金会介绍，目前全球仅存1.75万只野犀牛及1200只笼养犀牛。
The foundation, which is based at the White Oak Conservation Center, says only about 17,500 rhinos remain in the wild with another 1,200 living in captivity.
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