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In the thesis work have been compared with parameters of reproduction in sows of different genotype in the enterprise AGROPIG CZ s. r. o. in Velešín. There are in breeding were monitored achieved the performance parameters in sows of Czech white noble breed and crossbreed Czech white noble breed with landrace insemination hybrid boars. At the conclusion of the work was designed recommendations for the improvement of those parameters in practice. In the enterprise AGROPIG CZ s. r. o. have been identified following the results of the reproduction: there is in 2014 the breed BU, the average was stillborn 1,2 piglet of all births and losses in the postpartum period were 2,3 piglet. Crossbreed BU x L in this year have better values, was born to them in average of 1 stillborn piglet and losses of piglets in the postnatal period were at an average of 1.8 piglet. In 2015 the results of both groups are identical. The diameter of stillborn piglets was 0,9 pieces of all births and losses in the postpartum period were 1.3 piglet. In 2014 breed of BU showed on average a lower number of live born piglets (11,7 pcs) compared to crossbreed BU x L (12,9 pcs, i.e. by 1.2 piglet more). Weaned piglets was on average 0.6 more at crossbreed BU x L. In the year 2015 should crossbreed in average by 0.4-born piglets more than purebred sows of Czech white noble breed. Live born piglets was in average 0.5 more and all born about 0,4 more. From the obtained data prove that the percentage of farrowing and service in 2014 and 2015 in gilts crossbreed breed white noble x landrace is better than for pure-bred gilts breed white noble. There is in the category of sows should be in 2015, better results pure male. Furthermore, it was found that sows in a given enterprise overrun most often in the range of 18. 24. day of gestation. This corresponds to the length of one reproductive cycle and may be due to the poor quality of the insemination dose, or the wrong technique of insemination. Percent overrun was in the two study groups almost equal in both monitored years. In contrast, in the value of the abortion the two groups differed. To abortion occurred in 2014 more often in crossbreed, in 2015 in purebred sows. Statistical evaluation shows that the gilts and sows crossbreed BU x L is less overrun, have better results of pregnancy rate and even better killing it. Crossbreed BU x L also had better indicators related to births. Crossbreed had on average more of all births, live born and weaned piglets (at least by 0.4 piglet more).

The target of this diploma work was to find and apply the most effective simulation model of pig breeding at particular company. Partial goal of this work was to identify the breeding technologies and simulation methods. The data was elaborated in program Microsoft Office Excel 2010 and the simulation model was compiled in @RISK 5.5 software. After the application of simulation model I found out, that in the chosen company was landrase pig race getting higher profitability than bílé ušlechtilé pig race. Another result points to that the shorter time of weaning of piglets has positive influence at company profitability. On the base of this results was recommended to the company to rise up the part of landrase pig race and to short the time of weaning of piglets. There was also generated the curved line of sow´s profitability in it´s individual litters, which helps to culling of sows and to integration of sows into the herd.