DEPENDENCE MODELS OF SMALL-SCALE PIG-BREEDING FARM CAPACITY ON AVAILABLE AGRICULTURAL LAND
The article outlines the challenges for small-scale pig enterprises. Profitability indices of pig-breeding complexes and small-scale pig farms are compared, being 25-30% and 5-15%, respectively. The factors influencing the profitability of small-scale pig farms are identified. The risks to surface and ground water bodies, located in close proximity to pig-breeding enterprises, are shown if the technology of storing and application of bedding-free liquid pig manure with the moisture content from 92 to 97% is not observed. Based on the identified factors, the necessity of efficient use of land resources of small-scale pig farms to reduce the anthropogenic load on the environment is substantiated. The standard rates of pig manure application on soil are 35 t/ha. According to the Russian statistical data the small-scale pig farms have from 2 to 50 hectares of agricultural land. The main types of activity of small-scale pig farms are piglet fattening, pig reproduction and the full cycle of pig keeping and growing. The standard outputs of manure from growing-fattening pigs, as well as from barren, gestating and milking sows are cited. The statistical data on average number of piglets from one sow in Russia, which is 9.8 piglets per one farrowing, are taken into account. Using the above standards and statistics the graphical and mathematical models of dependence of small-scale pig farms capacity on the amount of available land resources were developed to determine the correlation between the capacity index of small-scale pig-breeding companies and the index of the land amount, where it is planned to start production.