Extruded Versus Raw Ground Soybeans for Dairy Cows in Early Lactation

Abstract

Twenty-four Holstein cows (12 primiparous, 12 multiparous) were allotted 2 wk prior to parturition to one of two treatments. For 10 wk after parturition, cows of each age group received either 2.27 kg extruded (150C) soybeans or 2.27 kg of raw ground soybeans in addition to corn silage and concentrate in a complete mixed ration (formulated for early lactation).