noun, noun or participle which takes 'suru', transitive verb
free-range rearing; letting animals roam freely; pasturing; releasing insects into the wild
Used for livestock raised in open conditions, or for releasing insects (e.g., for biological control). The noun form is common; the suru-verb form is also used.
この農場では鶏を放飼している。
This farm raises chickens free-range.
天敵昆虫
They release natural enemy insects to control pests.