Dictionary / Vocabulary / 犠牲になる
ぎせいになる
to be sacrificed; to become a victim (of); to fall victim (to); to lose one's life
この場合犠牲になるのは、若い子牛と病気の動物か負傷した動物だ。
If this is the case, its victims are usually young calves, or injured or sick animals.