College of Agricultural Sciences

B. J. J. Van Ryssen, Whanger, P. D., Turner, H. A., and Tinsley, I. J., “Mineral and vitamin interactions of steers in a Mediterranean climate”, Livestock Production Science, vol. 38, no. 2, pp. 107 - 115, 1994.

H. A. Turner, Whanger, P. D., Van Ryssen, B. J. J., and Tinsley, I. J., “Mineral and vitamin status of steers under various management practices in eastern Oregon as determined by hepatic, plasma and hair smaples”, in Proceedings, annual meeting-Western Section, American Society of Animal Science (USA), 1988.

B. J. J. Van Ryssen, “1987 Progress Report -- Research in beef cattle nutrition and management: Aspects of Livestock Production in South Africa”, Oregon Agricultural Experiment Station, 1987.

I. J. Tinsley, Turner, H. A., Van Ryssen, B. J. J., and Whanger, P. D., “1987 Progress Report -- Research in beef cattle nutrition and management: Influence of Routine Management Practices at Burns and Union, Oregon, on Selenium, Copper, Zinc and Cobalt Status of Cattle”, Oregon Agricultural Experiment Station, 1987.

I. J. Tinsley, Van Ryssen, B. J. J., and Whanger, P. D., “1987 Progress Report -- Research in beef cattle nutrition and management: Plasma Levels of Vitamin E and Vitamin A in Cattle Raised Over a One Year Period on the Squaw Butte and Union Stations”, Oregon Agricultural Experiment Station, 1987.