Analyses of different beef production systems regarding their net contribution to human food supply and arable land occupation

摘要

A further increasing competition between animal feed and human food supply is expected in the future. In this regard, especially beef production is discussed critically. In the present study, the net food production and the arable land occupation of different beef cattle systems were studied. The data were taken from results of a published beef cattle fattening research project where the performance of Simmental heifers, steers and bulls were compared at different concentrate feeding intensities (high, low, extensive) using grass silage, or corn silage at high concentrate supplementation.