There in the master work, after Lithuanian and foreign authors literature analysis, are presented the main rates and methods of an investment evaluation, discerned their advantages and disadvantages and practical application possibilities (IJSC “Baltijos garantas” under the example of Siauliai regional center). After the formulating of the absence of investment projects economic evaluation there were created a theoretical model of the economic evaluation, which is supplemented by the use of uncertain numbers. The theme of the final work has been read in the eighth republican graduates and postgraduates’ scientific conference “Economy and management in the dynamic volatile environment” (06/05/2005, Vytautas Magnus university) and in the IInd International student’s science and art works conference “Initiatives 2005” (25/04/2005, Siauliai university). The authors’ hypothesis, that project’s economic evaluation model combines all of the economic evaluation’s methods into one total unit and gives a possibility to evaluate an investment project miscellaneously, has been confirmed partly.

Objective – To evaluate the correlation of sows removing genotype and farm conditions on the reproduction indicators. Research goals: 1. To analyse genotype and farm conditions influence to researching reproductions indicators of the sows; 2. To evaluate the influence of sows removing genotype and farm conditions on the reproduction indicators; 3. To evaluate removals reasons correlation with sows reproductions indicators. Research methods: The aim of the study was to evaluate how parameters of lifetime productivity differ for females having distinct removal reasons and was to describe the reasons for removal of sows distributed across parity categories data analysis was done with Microsoft Excel 2000 program. We have calculated research attribute medium values and bias (SE). Using general linear model we have investigated (genotype, farm and condeming reasons) fact influens for research reproduction index. Reproduction problems and diseases represented two third of all removals. Too early sows removing is one of the determinative factor which decreasing pigs drove reproduction and farm profitability.