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The efficiency of pig farms largely depends on the scale of production. Based on data from 66 farms, the models for different effects of scale were developed. They were differentiated in the field of open and closed rearing cycle. For this purpose, the DEA method, which enables to determine the effectiveness of a multidimensional system was used. Farms with fixed effects of scale prevailed in the group with open rearing cycle. They were characterized by the lowest share of their feed in the feeding of pigs and a small percentage of leased farmland. Due to the optimal scale of production to obtain, the owners of these farms achieved the highest income. Farms with increasing scale effects accounted for the largest share in the group with a closed cycle farming. They stand out the fewest resources and factors of production and the smallest scale of production. At the same time, these farms achieved the lowest economic results. A different situation occurred in farms with diminishing effects of scale. These farms were characterized by the world's greatest factors of production, the largest scale of production and the largest share of the cost of feed in the cost of production.

Scale efficiency of farms with different systems of rearing pigs