I kept back 3 heifers, I dropped them off at my FIL's on 11/7/17 at an avg weight of 705, picked them up 8-21-18 at an avg weight of 1005 lbs.  They were fed free choice hay and 6-10 lbs of grain a day.  They were running with his 25 replacement heifers.

We do favors for each other all them time, so mainly looking to pay back actual costs.