Abstract
Farms breeding beef cattle highly depend upon lands, because the use of roughage is indispensable there. Therefore, we set up in this article the subjects to clarify: (1) a rationally organized system of feed production corresponding to changes of the farm scale in land area, and ; (2) a highly profitable system of land use in beef-cattle breeding farms with standard land area. The methods of study in the first subject are as follows: with respect to the system of breeding beefcalves (fattening cattle) and the use of roughage, 12 variants of production processes (of grass and corn silage) are set up ; for each variant respectively, labour forces are defined to 2 of family labour forces (basic labour forces) and land areas to 6 different scales of 30, 40, 60, 80, 100 and 120 ha, and ; linear programming models are constructed to approach solutions. In the second subject, we suppose specialized farms for breeding based upon 3 typical systems of land use, having a standard scale of land area of 30ha, and tried to find optimum solutions for each type of land use. The results of the operation show: in the first subject, with respect to the specialized farms for beef cattle breeding, having 2 family-labour-forces, an intensive land use in appropriate for farms with smaller scale of land area, while an extensive land use is favourable for those with larger scale of land area, and ; in the second subject which assumes the farms with the same scale of land area, the beef cattle breeding farms based on an intensive land use system are more advantageous in view of profitability.
