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.
2
集约化农场经营层架式鸡笼养鸡就是集约化农场经营的一个例子：农场主们管理动物和庄稼，以得到最大产出。
Intensive farming Battery hens are an example of intensive farming: farmers organize their animals and crops to get the maximum food from them.
3
原本通过消毒可以清除的病原体，在散养鸡笼内得以大量增殖。
Pathogens that could be removed by disinfection in the shed would continue to build up on the range.
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