In the article it is presented examples of the technological calculations which show the ways of searching the optimized decisions to transfer enterprises from a round system of receiving farrows on a current one. These calculations were done by the help of the worked out computer programs. Depending on multifertility of sows it is changed the need on the number of machines in sections for rearing and fattening. At changing the intensity of the growth of animals in the period of rearing and fattening it is changed the need in sections, a number of machines, sizes of the production area, a number of consumed feeds and formation of the manure flows by both an individually taken technological group and all live-stock during a year. Using the computers allows to do operatively calculations with different technological and economical indexes and find quickly the optimal decisions, which can satisfy possibilities of the enterprise and taking into account breed and physiological properties of animals of different technological groups.