Zhodnocení reprodukce a vlastní užitkovosti v nukleovém chovu přeštického černostrakatého plemene

The main objective of the thesis was to evaluate the reproductive utility and the achieved parameters of its own utility of the nucleus herd reared on the farm in Mladotice. The detected results have been compared with the average of the Prestice black-pied breed population. The attention has been paid to the lines of the boar representation. The number of all born piglets, the alive born ones and the weaned ones has been regarded during reproductive qualities assessment. The average daily growth, the muscle proportion and the back fat height have been evaluated while assessing the own utility. The origin of the Prestice black-pied breed with the following regeneration process with the assistance of Mirgorod, Liven, Cornwall, Berkshire, Wessex and German saddleback breeds, which contributed to the resistance of the Prestice black-pied breed, has been described in the literature review. The improvement process followed after the regeneration, especially by using Pietrain, Hampshire and Landrase breeds. The characteristics of the Prestice breed with reference to its tilted ear and typical black-pied coloring without body parts defining have been elaborated. Furthermore, the utility, the population development in the last five years and the preservation of the breed as a genetic resource have been described there. In the thesis the own utility of the Prestice black-pied breed of the nucleus herd reared on the Mladotice farm has been evaluated that does not reach breeding goal. The Akoga line is the best line considering its own utility. The reproductive utility has been evaluated as excellent. The Wiskont line has the best results. Statistically significant differences have been found among the lines considering both its own utility and reproduction