This thesis is focused on the evaluation of selected influences acting on the commercial production of Charolais cows. I evaluated the influence of the number of cows kept, the number of calves born, mortality and adverse selection. Herd turnover was monitored in Tvrdkovská zemědělska farma for one year. In each month were determined inputs and outputs in all categories. After evaluating the effects, I found that for market production is the most important number of calves born. Funds from the sale of calves make up the largest sales. Farm in 2013 earned a total of 5,993,582 CZK. For the sale of calves 3,836,916 CZK. Another factor increasing sales was sale of discarded pieces, which makes farms earned 2,156,666 CZK.

The aim of this diploma thesis is to choose important reproductive parameters of sows from the available data, according to which it would be possible to statistically evaluate achieved reproductive level of analysed breed. It is necessary to define these parameters as accurately as possible with the shortest time required for measuring and collecting data. In the reproductive company SPV Plevnice were chosen 110 sows from different litters for the purpose of experiment. The day of weaning was on the 5th August 2015 and the sows were separated into 8 groups according to the order of actual litter, sow genotype and boar genotype, used for sow insemination. 13 basic reproductive parameters and 10 reproductive parameters reflecting sow genotype (BLBA x BAL) and boar genotype (4 breeds) BLBA = Czech large white x Landrace x Topigs, BAL = Czech large white x Landrase x Topigs x DanBred. The average value of born company piglets was 13,94. More specifically, total number of livebirths was 13,25 and total number of stillbirths was 0,68, which represents 4,88% of whole litter. Average number of weaned piglets per one sow and one litter was 12,16 with the loss of 1,06 piglet and statistical signifikance of risk and producing (p = 0,0436). The pregnancy rate after the first insemination reaches 89,82% and is influenced by average number of unproductive days 10,84 days. All these factors (including average lactation period of 27,06 days) forms meantime (154,03) with turnover 2,37 litters per year. As the most important factor is considered the indicator of weaned piglets per year, which in this case reaches 28,82 piglets/sow per year. In the next chapter there were given parameters in the term of old sow BLBA genotype and BAL genotype compared. In the next chapter the same comparation was used for boars. The impact of the breed was the best at sows of the last reproductive season, when the best boar L1536 had the highest number of livebirths with the average breeding loss (-1,1) 12,28 weaned piglets. Practically the same results had L1538 boar. However, in this case the number of livebirths was very low, so that the number of nurse sows was higher. The youngest L25 boar has the highest number of livebirths/sow per year, however concurrently the highest losses to weaning and therefore least weaned piglets in comparison with other boars. In terms of the distribution of the season, the worst results for the summer season (12.7 piglets born alive / litter).

The aim of the thesis evaluation of milk production Czech Pied and Holstein cattle reared in identical conditions, a farm was to evaluate milk production Czech Pied and Holstein cattle reared in identical conditions one farm. The literature review has been described primarily cow barn, then we focused on milking his principles and types of milking parlors. The main part of the study was to compare production between Czech Pied and Holstein cattle on farms within TOPAGRI Ltd. based in Topolná, where she had two breeds are identical breeding conditions. The obtained data were statistically analyzed. Results for the period were compared between breeds and monitored with available countrywide data. In this work, we observe that in identical conditions amounted cow Holstein cattle to higher average daily milk production by up to 6.89 kg per cow. Furthermore, we found a comparable fat and protein content, while we have not had the expected significant differences under the two breeds. Regarding the fat content of milk, the best result was recorded in 2013, when the Czech Simmental breed recorded an average fat content of milk at 4.00% and 3.95% of Holstein breed. In 2014, even the Holstein cows showed higher average fat content of milk and 0.05% amounting to 3.83%. For the average protein content was in 2012, the highest distinction in the reference period and 0.33% in favor of Czech Pied breed. In 2014, the average protein content of almost equaled the difference was only 0.03% in favor of Czech Pied breed. Finally, we have seen the development of market prices of milk when the farm gate milk prices tracked farms long staying well below the national average. The highest purchase prices reached tracked farm in 2014, when the average price per kilogram of milk amounted to CZK 9.13. After the abolition of milk quotas in 2015, we have, however, noted a sharp decline in prices, up to CZK 6.75 per 1 kg of milk.

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