The Best How Much Will A Yearling Cow Eat In Hay References. The 24 pounds is based on 100 percent dry matter. 2 4x5 round bales (1000 lbs) of grass hay (og, brome, timothy, or fescue).

Cows will voluntarily consume 2.0% of body weight or 24 pounds per day. Also, approx 15 square bales (750lbs) of alfalfa. This is a very rough average, and horses may require more or less.