Breeding objectives for beef cattle used in different production systems. 1. Model development

WOLFOVÁ, Marie, WOLF, Jochen, PŘIBYL, Josef, ZAHRÁDKOVÁ, Radka a KICA, J. Breeding objectives for beef cattle used in different production systems. 1. Model development. Livestock Production Science, 2005, 95, 201-215. ISSN 0301-6226.
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Abstrakt

A bio-economic model was developed to evaluate utilization of beef bulls in a variety of production systems. The model can simulate life-cycle production of both beef and dairy cow herds with or without an integrated feedlot system. The Markov chain approach is used to simulate herd dynamics. The herd is described in terms of animal states and possible transitions among them. Equilibrium herd structures of the integrated production systems are calculated in their stationary states. The economic efficiency of each system is a function of biological traits of animals and of management and economic parameters.

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