noun
cage rearing; cage feeding; cage breeding
Refers to raising or keeping animals (especially livestock or pets) in cages, often contrasted with free-range or pasture-based methods.
この農場では鶏のケージ飼育をやめて平飼いに切り替えた。
This farm stopped cage rearing of chickens and switched to free-range.
ケージ
Cage rearing requires less space, but it is sometimes criticized from an animal welfare perspective.