noun which may take the genitive case particle 'no'
grass-fed
Used attributively for livestock raised on pasture rather than grain; often seen in food labeling and agricultural contexts.
See also: 牧草肥育
この牛肉はグラスフェッドで、風味が豊かです。
This beef is grass-fed and has a rich flavor.
グラスフェッドの牛乳は健康に良いと言われている。
Grass-fed milk is said to be good for your health.