James W Oltjen

Selected Publications

Beckett, J.L. and J.W. Oltjen. 1993. Estimation of the water requirement for beef production in the United States. J. Anim. Sci. 71:818-826.

Hyer, J. C., J. W. Oltjen and M. L. Galyean. 1991. Development of a model to predict forage intake by grazing cattle. J. Anim Sci. 69:827-835.

McPhee, M.J., J.W. Oltjen, T.R. Famula and R.D. Sainz. 2006. Meta-analysis of factors affecting carcass characteristics of feedlot steers. Journal of Animal Science 84: 3143-3154.

Oltjen, J. W. and F. N. Owens. 1987. Beef cattle feed intake and growth: empirical Bayes derivation of the Kalman filter applied to a nonlinear dynamic model. J. Anim. Sci. 65:1362.

Oltjen, J. W. and W. N. Garrett. 1988. Effects of body weight, frame size and rate of gain on the composition of gain of beef steers. J. Anim. Sci. 66:1732.

Oltjen, J. W., A. C. Bywater, R. L. Baldwin and W. N. Garrett. 1986. Development of a dynamic model of beef cattle growth and composition. J. Anim. Sci. 62:86.

Oltjen, J. W., G. E. Selk, L. G. Burditt and R. E. Plant. 1990. Integrated expert system for culling management of beef cows. Comp. Elec. Agric. 4:333-341.

Oltjen, J.W., R.D. Sainz, A.B. Pleasants, T.K. Soboleva and V.H. Oddy. 2006. Representation of fat and protein gain at low levels of growth and improved prediction of variable maintenance requirement in a ruminant growth and composition model. In: Nutrient Digestion and Utilization in Farm Animals: Modelling Approaches (E. Kebreab, J. Dijkstra, A. Bannink, W.J.J. Gerrits and J. France, Eds.) pp. 144-159. CAB International, Wallingford, UK.

Renquist, B.J., J.W. Oltjen, R.D. Sainz, J.M. Connor and C.C. Calvert. 2005. Effects of supplementation and stocking rate on body condition and production parameters of multiparous beef cows. Animal Science 81:403-411.

Sainz, R.D., F. De la Torre and J.W. Oltjen. 1995. Compensatory growth and carcass quality in growth-restricted and refed beef steers. Journal of Animal Science 73:2971-2979.

Ferrell, C.L. and J.W. Oltjen. 2008. ASAS CENTENNIAL PAPER: Net energy systems for beef cattle—concepts, application, and future models. Journal of