A number of tests have been carried on at the Iowa Agricultural Experiment Station with fattening two-year-old steers. These steers have been fed during the fall and winter months in dry lot, usually for 120 days.
Proceedings of the Iowa Academy of Science
©1925 Iowa Academy of Science, Inc.
Culbertson, C. C. and Evvard, John M.
"The Protein Requirements of Practically Mature Fattening Cattle,"
Proceedings of the Iowa Academy of Science, 32(1), 442-443.
Available at: https://scholarworks.uni.edu/pias/vol32/iss1/117