caa a22 4500 388059745 CHVBK 20180307125117.0 cr unu---uuuuu 161130e199806 xx s 000 0 eng 10.1017/S1357729800009188 doi S1357729800009188 pii (NATIONALLICENCE)cambridge-10.1017/S1357729800009188 Developing breeding objectives for beef cattle production 1. A bio-economic simulation model [Elektronische Daten] A deterministic simulation model was constructed to develop breeding objectives and estimate biological and economic values. The model simulates life-cycle production of a breeding cow and growth performance of her offspring. Input variables are divided into four categories: animal traits, nutritional variables, management variables and economic variables. The economic variables assume typical beef cattle production in Japan. The outputs from the model include cow-calf performance, feedlot performance and biological and economic efficiency. The model's ability to simulate herd composition, food intake of cow and calves, cow body-weight changes, empty body and carcass composition of feedlot animals and production efficiencies is illustrated. Copyright © British Society of Animal Science 1998 beef cattle nationallicence body composition nationallicence breeding objectives nationallicence carcass composition nationallicence simulation models nationallicence Hirooka H. Faculty of Economics, Ryukoku University, 612-8577 Kyoto, Japan Groen A. F. Department of Animal Breeding, Wageningen Institute of Animal Sciences, PO Box 338, 6700 AH Wageningen, The Netherlands Hillers J. Department of Animal Sciences, Washington State University, Pullman 99164, USA Animal Science Cambridge University Press 66/3(1998-06), 607-621 1357-7298 66:3<607 1998 66 ASC https://doi.org/10.1017/S1357729800009188 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1357729800009188 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hirooka H. Faculty of Economics, Ryukoku University, 612-8577 Kyoto, Japan NATIONALLICENCE 700 1- Groen A. F. Department of Animal Breeding, Wageningen Institute of Animal Sciences, PO Box 338, 6700 AH Wageningen, The Netherlands NATIONALLICENCE 700 1- Hillers J. Department of Animal Sciences, Washington State University, Pullman 99164, USA NATIONALLICENCE 773 0- Animal Science Cambridge University Press 66/3(1998-06), 607-621 1357-7298 66:3<607 1998 66 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge