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Chov prasat plemene bílé ušlechtilé v České republice
ROHÁČEK, Daniel
The goal of this bachelor thesis is to analyze the results that have been provided by the Czech Association of Pig Breeders regarding productivity of Czech Large White breed. For the ob-served period of 1999-2017, the intention was to compile the tables that would summarize the number of litters, number of born piglets in one litter (all vs. live born), number of piglets sur-viving 21 days, weight of piglets after 21 days, and average time between 2 litters. The source materials and the used literature clearly indicate that the swine production in the Czech Republic is shrinking. Swine breeders are closing their production due to instable price of pork meat. The number of sows decreased by 177 755 between 1999 and 2017. As a con-sequence, the number of litters declined as well. On the other hand, this impact is compensa-ted by permanently shortening time distance between two consecutive litters, which currently stands at 156 days. This logically results to increasing number of litters per sow, now amoun-ting to 2.4 per year. Effective breeding also leads to increasing number of piglets in one litter. In 2017, one sow brought in average 14.8 piglets in a litter, of which 13.4 live born. Also the number of successfully bred piglets is growing thanks to improving technologies and better trained pers onnel, having reached 11.7 piglets per litter in 2017. Sows of Czech Large White breed deliver increasing lactescence, as the weight of a litter after 21 days grew in the obser-ved period by 13.4 kg to 69.1 kg. In the next part of the thesis, analysis is made for field tests and results of the unified test, both supplemented by tables and charts. For the observed period, the goal also was to evaluate the average daily weight gain, the percentage share of muscle mass, and the average thickness of saddle fat in mm of both sows and boars. It was found out that the Czech Large White breed had an excellent meat utilization. The share of lean muscle is increasing continuously - in 2017 it reached 63.6 % for boars and 63 % for sows. The vast majority of supplied pigs was classified into the highest-quality categories. The final part of the thesis contains the list of farms that were certified for breeding the Czech Large White breed in 1999 - 2017. The number of such farms was growing until it rea-ched 24 in 2001 and 2002. However, after subsequent decline there was only 6 such farms in 2017.
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