Tucker, L.L.; Harbers, L.H.; Smith, E.F.
(Kansas State University. Agricultural Experiment Station, 1972)
During the winter of 1970-71, 63 six-year-old, non-lactating,
pregnant Hereford cows were divided into eight
groups to compare a soybean meal-sorghum grain supplement with
supplements containing either urea, Starea 44 ...