Influence of substituting two types of soybean protein for milk protein on gain and utilization of milk replacers in calves.

Twenty-four male calves (8/treatment) were fed milk replacers containing 19% crude protein from: a) 100% milk pro-tein; b) 66% modified soybean protein plus 34% milk protein; c) 66% heated soybean flour plus 34% milk protein as the only nutrients at 8, 9, 10, 11, 12, 12, 12, and 12% body weight from 1 to 8 wk of age, respectively