'Fattened' in the Bible

Adonijah sacrificed sheep, cattle, and fattened steers at the Stone of Zoheleth near En Rogel. He invited all his brothers, the king's sons, as well as all the men of Judah, the king's servants.

ten calves fattened in the stall, twenty calves from the pasture, and a hundred sheep, not to mention rams, gazelles, deer, and well-fed birds.