The aim of this thesis was to evaluate the chosen effects of control of performance on the growth of calves in the most common meat breeds of the South Bohemian region (Aberdeen Angus, Charolais, Limousine, Beef Simmental) involved in the monitoring of performance of beef cattle during the period 2009 - 2014. The aim of this thesis was to evaluate what influences affect the weight of beef calves during their rearing. When comparing the average weight of calves according to breed, the highest weight at birth were (42.37 kg), at 120 days (191.32 kg), at 210 days (307.65 kg) and at 365 days (503.53 kg) with the Charolais breed. When examining the influence of year of calving at the birth weight at 120, 210, and 365 days, it was found that calves of Limousine breed clearly reached the highest weight in 2012 in all age categories. In determining the effect of month of calving for the birth weight at 120 and 210 days of age, the best months are December to March for Aberdeen Angus and April was the best month for calving for Beef Simmental. The period of calving is going from winter until spring months. Aberdeen Angus cows up to the fifth calving make up 73.29 % of the herd. When examining the influence of calving order to calves weighing at 120, 210 and 365 days of age, the worst of all breeds are calves from the first calving. At 120 and 210 days of age, Aberdeen Angus calves were at the highest weight with the 6th calving, Limousine breed were at the highest weight of calves with the 9th calving. At 365 days of age, Aberdeen Angus calves had the highest weight with the third calving. Rearing management breed is clearly the best with breeders who participate in national exhibitions and produce bulls and heifers. Relative breeding values of the Fathers for Direct effect - growth (Peru) and relative breeding values for maternal maternal effect - growth (Meru), have verifiable affect on the weight of calves

Thesis on quality impact and processing silage and silage on milk yield of dairy cows discusses the theoretical part, mainly on the composition of the diet and milk production. In addressing this issue is important to ensure animal welfare. An integral part of the milk production is respecting technological procedures harvesting and preservation of harvested crops. Silage quality and composition of the diet affect the proper function of the rumen, which has an impact on the quality and composition of milk. The quality of milk and its composition affects the purchase price of milk. The practical part deals with methodology and data processing of milk production, the composition of the ration and analysis of silage and their subsequent statistical processing. Further consideration was given to the possible influence of the season. Statistical results were then compared with many experts. The results fell the most in 2015, which increased the average monthly milk yield . In this year , the best fed silage and forage

In my study I was examining the influence of the probiotic Bifidobacterium sp. on the functional status of the cattle´s rumen. Two adult cows Aberdeen-angus were used in this experiment. They were treated with a permanent cannula, which served for daily dosing of probiotics Bifidobacterium sp.. Samples of rumen fluid were analyzed for the amount of volatile fatty acids, protozoans, pH and the quantity of ammonia. When we tested the effect of the probiotics on each variable, the fixed effect of the influence of an individual has not been proved. When we tested the data without the effect of the individual in a linear model, the variables best describing my data were the butyric and acetic acids. The amount of protozoans increased as there levels grew. There is a strong effect of the individual as only two individuals were used. My results indicate that the influence of the probiotics Bifidobacterium sp., on the functional status of the rumen is low. These results could be affected by the low number of experiment-replication as well as by small quantity of tested animals.

The object of the study was to compare the results of insemination of dairy cows by using type of insemination dose, convertional or sexed. The hypothesis is an assumption of higher level of heifers conception rate after insemination by convertional dose than by using a sexed dose. The evaluation was conducted on the farm ZEAS Podorlicko a.s in the period from June 25th, 2013 to November 2nd, 2015 and there were monitored 998 heifers. Data for the evaluation were processed from the farm records and was created a database of heifers conception rate due to the type of insemination doses. For the statistical processing was used software SAS 9.3. In the group of heifers was observed influence month, year, the rank of the insemination and type of insemination dose on the age of first insemination and its result. At the level of significance (P < 0,001) was observed negative effect of insemination on age of first insemination (r = -0,195). It was also proved, that year of insemination has effect on result of conception rate (r = 0,068) and the result insemination had a positive effect on age at first insemination. These two phenomena were detected at the level of significance (P <0.05). Therefore, it was achieved a better level of conception rate in 2015 than in previous years (2013 and 2014) and also was demonstrated higher levels of successful conception rates with increasing age of heifers at first insemination. Based on statistical significance (P <0.001) I found that level of heifers conception rate was higher after convertional insemination dose (65.69%) than sexed dose (37.28%). There was also a statistically significant difference between the month of insemination and its result. On the other side, there was no statistically significant effect of rank of insemination on its result. According to those results the hypothesis, that there si higher level of conception rate by using convertional insemination dose, can be confirmed. The findings show us, that it is necessary to focus on reproduction in various parts of the year, especially in September, October, November and December, where the conception rate was lowest.

The goal of the thesis is to give a comprehensive view into dairy cattle breeding and reconstruction of agricultural buildings, specifically the reconstruction of two existing K-96 type cowsheds. Building are located in Jiřice village, Pelhřimov district. These buildings were a part of an agricultural area and while one of them is still used for its purpose, i.e. breeding of dairy cattle, the other is not. The Master's thesis has two parts, first one being a literary research, and second one being a project documentation for construction approvals for reconstruction of said buldings. The focus of the reconstruction is on the comfort of the stabled dairy cows and requirements on welfare of cattle are implemented in the reconstruction design. Fixed stabling in the building with stables for dairy cows is in the reconstruction design changed to free one bedding. A milking parlor is planned to be in the second building, including space for the cattle to wait in before milking, there will also be a cheese factory making hard cheese and storerooms. The reconstruction design for the agricultural buildings is in accordance with valid legal regulations requested by the EU and regional planning of Jiřice village.

The relationship between linear type traits and productional, longevity traits were analysed for 645 cows first calved between 2000-2016. The aim of study was to evaluate realionships of individual 20 type traits and 4 general conformation characteristics. For analysed herd was evaluated impact of individual type traits to first lactation milk yield in kg, lifetime milk yield in kg and functional longevity in days. Results proved important relations between folowing linear type traits and first lactation milk yield in kg: rump lenght, rump width, body depth, muscularity, pastern, fore udder lenght, rear udder attachment, central ligament, udder depth and front teat placement. Statisticly important relationships were found between all general conformation characteristics and first lactation milk yield. Proved impact between individual linear type traits and lifetime milk yield were found for rump angle, hock and front teat placement. Relationships between general conformation characteristics and lifetime milk yield were not statisticly proved. For analysed herd were also found important relations between rump angle and hock to functional longevity. Important relationships between general conformation characteristics and functional longevity were not found. In overall 192 cows were culled in analysed herd in 2016. The most frequent reason of culling a cow out of breed was caused by fertility disorders which participated in overall culling reasons in 34,9 %.

Thesis is monitoring body orientation during the day cycle, with a special focus on the body orientation during resting and grazing cattle. Environmental conditions including the Earth's magnetic field which affect the animal orientation have been evaluated. Body orientation of the selected individuals was determined by compass, directly every half hour at the site. In total 24 cows in 2 herds were monitored. In every herd were chosen 12 easily recognizable individuals. Monitoring took place 7 days in September 2016. About weather conditions (wind, rain, sun, temperature) and resting of the individuals was kept an account, which would affect the cattle orientation. This study could not confirm the theory of the N-S cattle orientation by magnetic field and therefore can not confirm or disprove the influence of the power line to the cattle orientation. Even at rest or grazing cattle the theory of the N-S orientation could not be confirmed.

The aim of this thesis was the evaluation of selected factors on milking yield and longevity of the selected herd of dairy cows of Holstein cattle in the company Prima Agri a.s. There were monitored the indicators of dairy cows of Holstein cattle such as genotype, milk performance, the order of the lactation, the age of the first calving, the length of interim and of the service period, lifetime performance and reasons for elimination. The data were taken from the dairy cows whose first lactation was finished from January 1st to December 31 st 2016. 385 dairy cows were included to the monitoring. As for the genotype influence on milk performance, statistically significant difference was found out between the first and the fourth and the third and the fourth group on the level of significance (P<0,01). The effect of the age of the first calving on milk performance in kg of milk on first lactation wasn´t statistically provable (P>0,05). Statistically highly significant difference was found out by the effect of the order of the lactation on milk performance on the level of significance (P<0,01) between the groups of the first lactation and of the other groups of lactation. Statistically significant difference was found out between the 2nd lactation and the 4th and higher lactation on the level of significance (P<0,05). The effect of the genotype on the length of interim and the effect of the order of lactation on the length of interim weren´t statistically provable (P>0,05). The effect of genotype on length of the service period was statistically significant on the level of significance (P<0,01) between the group H2 and the group H3. Statistically significant difference (P<0,05) was found out between the groups H1 and H3, H1 and H4 and as well as between the groups H2 and R. The effect of the order of lactation on the length of service period was statistically highly significant on the level of significance (P<0,001) between the groups of the first lactation and of the other groups of lactation and between the groups of the second and fourth and higher lactation. The effect of the genotype of eliminated dairy cows on lifetime performance in kg of milk was statistically highly significant on the level of significance (P<0,001) between the groups H 1 and H2, H1 and H3, H2 and H3, H2 and R, H3 and R. An average number of eliminated dairy cows was 28,62 %. The biggest number of the eliminated dairy cows was on the grounds of fertility disorders and that is 35%. Longevity of the eliminated dairy cows was 2,7 lactation.

The diploma thesis dealt with the analysis, and evaluation of dairy performance and its correlation with reproductive rates of Holstein cattle. Milk cows which were kept in Měcholupy agricultural, Inc., Předslav were analyzed between 2013 - 2015. Th ecompany is located in the foothills of the Bohemian Forest (Šumava). It breeds cattle for milk as well as meat, and pigs. The company management is committed to achieve good levels of milk production. It pays constant attention to this issue, so the average performance has risen since 2013 from 8 726 kilograms of milk to 9 093 kg of milk per cow in 2015. Cows on the 4th and higher lactation reached the highest performance in 2015 9 649 kg of milk. As for the European Union who abolished milk quotas in 2015 and the situation on the milk market is still complicated by banning exports of milk powder to Russia (Russian annexation of the Crimea), the management´s effort has been to produce milk at the lowest possible cost. They keep trying to limit culling as much as possible, so that they solve the problem of mastitis and reproduction at the highest level. Each cow which is treated has an individual approach, as well as the animal husbandry has specific requirements for animal breeding company in terms of quality seed. The results showed that milk cows with other health problems were eliminated the most (38.6% per year from 2013 to 2015) and also the ones with metabolism disorders and problems with hooves. The mastitis issue is dealt with very effectively, so that it is not one of the major problems of the herd (7.24 % for 2013 -2015). Management seeks to eliminate the problem milk cow in the lowest age and conversely on contrary if the animal is healthy, they try to keep it in the herd as long as possible, because such an animal has the greatest economic effect. Reproductive rateis not too satisfactory, but the management has no interest in hormonal control of reproduction. Active search of rutting cows is preferred by nursing staff. They cooperate actively with animal breeders and require a delivery of the insemination doses according to their requirements for each for each cow

In thesis are comparing two cattle farms in area around Svratka, focussed on dairy cows of Czech Fleckvieh cattle. One is conventional farm and other is organic farm. Thesis is focused mainly on analysis of differences in volume of milk and its composition. Quantity of milk was monitored in monthly intervals for period of one year. Apart from milk quantity we observed contents of fat, protein and lactose. Number and day of lactation was also taken into account. Attention was given to composition of daily ration for dairy cows on organic farm, and we also monitored number of somatic cells and solids-non-fat in milk. It was found that dairy cows in organic farm breeding showed permanently lower performance of the animals, which was often statistically provable. Other factors differed depending on composition of daily ration and season. Content of fat and proteins had upward tendency in organic farm breeding. Amount of lactose differ only slightly between conventional and organic farms.