This thesis focuses on observation and evaluation of factors influencing parameters of broiler's chickens performance. In the first part of the study the effect of parent stock age and weight of one day old chickens in 28 batches was observed. The effect on follows parameters was evaluated: weight of one-day chickens, weight of chickens in age of 14, 21 and 28 days, weight at the end of the fattening and feed conversion ratio. In the second part of this thesis 774 batches was evaluated. The effect of farm, years of fattening, feed mixtures supplier, month of fattening, final hybrid on feed conversion ratio, weight of chickens at the end of the fattening and index of fattening productivity were evaluated.

In this thesis, main objective was to assess the impact to effect season on quantity remains of feeds with helper PENN STATE separation, and effect on milk production cows at first lactation period from May 2014 to March 2015 in company (ŠZP Žabčice). Monitoring was performed once a month. Laboratory tests determined the dry matter of the remains of feeds and subsequently compared in the dry matter based ratio. From these values were calculated total dry matter intakes from feed cow and the possible impact on the nutritional status of the animals. The results show that, on average, was founded 1908.64 kg feeds in the feed trough, yet remaining 172 kg remains of feeds average for the reporting period. The structure of the mixed ration (TMR) correspond to the recommended values, income dry matter intake cows averaged 22.12 kg / day. Condition score cows ranged on average 3.29 point, and the milk yield in average at 29.37 kg of milk. The exception were the observation in September, when remains of feed has risen strongly and was also observed low dry matter content in TMR, a slight decrease of fitness scores and a decrease in milk production. It was shown that the dry matter intake and the air temperature was negative correlative dependence. In contrast, demonstrated a positive correlates between dry matter intake and milk production.

Goatsbreedingisbecomingincreasingly more popular in the Czech Republic. There are factoryfarmswhich are starting to expand. Goats are importantforlandscaping, forliquidationofinvasiveshrubs and tallinvasivegrasses in pastures. Goats are breadedbecauseofhighqualityproducts such as milk and goatmeat. Goatmilk and dairyproducts are importantbecauseofhighnutritionalvalue and digestibility. Goatmeatisoneofthefinestmeats, due to itslow fat content and high protein content. MeatofBoergoatsisthebestforproductionofgoatmeat. Thepurposeofthisworkis to assessthelevelofmeatproduction in selectedfarmsofBoergoats and evaluatethedevelopmentofreproductive performance and increases. Thegained data are compared to thenational data and usedfortheevaluationofthemonitoredfarms. Finally, itissuggestedrecommendationhow to improvetheleveloffarming and theeconomicindicators in theselectedfarms.

A major contributing factor to the maintaining high milk production along with good reproduction of dairy cows is to create an optimal environment of stables. The aim of this study was to assess the effect of changes in microclimate stables on milk production and fertility in the observed herd of dairy cows. Monitoring was conducted from February 2013 to December 2015. The data were obtained from reports of milk production, lactation records of dairy cows and program called AFI FARM. Temperature-humidity index was negatively correlated to milk yield (r = -0,172). There was also negatively correlation between temperature and milk yiel (r= -0.176). Correlation factor between the relative humidity and the milk yield was r = -0.073. There was found strong positively correlation between service period and insemination index, r = 0.886, weak positively correlation between service period and insemination interval r = 0.397 and moderate correlation between service period and embryonic mortality, r = 0.532. When the relative humidity in the stable increased from 32.00 % to 89.90 %, temperature was measured from - 0.6 ° C to 35.1 ° C. The values of temperaturehumidity index were ranged from 39.99 to 83.71. The hypothesis is confirmed one should conclude that the microclimate of stable affects milk production. On the other side, in relation to reproductive indicators, hypothesis was not confirmed.

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

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.

The aim of this study was to determine the effect of breed on the amount, composition and technological properties of milk of dairy cows kept in identical conditions on the selected farm. A total of 18 cows was observed, that is six samples of Ayrshire, Fleckvieh and Holstein cattle. The samples of milk were analyzed in the laboratory. The monitored indicators were: the amount of milk per standard lactation (305 days), fat, protein, non-fat dry matter, dry matter and density content, active and titratable acidity, the process and quality of rennet. The results were compared within those three breeds and milk recording for the year 2014/2015. The highest amount of milk produced the Holstein breed 8802 kg, followed by Fleckvieh 7591 kg and Ayrshire breed 7097 kg. The best parameters for technological use has the Czech Pied cattle milk. The Holstein and Ayrshire milk results were at the similar level. Fleckvieh cows showed the highest content of milk components and Holstein cows the higher protein content 3,21 % com-pared to Ayrshire. The Ayrshire cows produced milk with higher fat content 4,23 %. In kilograms of milk milked cows surpassed Fleckvieh about 451 kg of Ayrshire cattle and about 115 kg the national average. Holstein dairy cows produced about 744 kg of milk less than the national average. All three breed on the farm had higher fat content and lower protein content than the national average.

In this work, the effects of seasons and frequency of grazing on the quality of Holstein cattle´s milk and milk products was monitored. Data from milk reccording of Z. P. Z. farm in Valašská Bystřice were used to obtain the results for year 2015. Dairy cows were categorized in numerical order of lactation into the three numerically equal groups that are dairy cows in 1st, 2nd and 3rd to 6th lactation. Deviations of milk yield were being observed during the year in relation to pasture. We also studied whether there was also change in representation of other milk components, especially in fat and proteins in the particular groups and well as in the whole herd. The results of the analysis showed that the most balanced milk yield during the monitoring of dairy cows was achieved in the winter months. When coming to and leaving from the pasture, we recorded significant declines in all observed values. During period of grazing, our results were highly fluctuating with the lowest values of milk yield (24.65 kg) and content of fat (3.67 %) recorded in August, which we attribute to high average daily temperatures. However, highest values were recorded during January for milk yields (32.25 kg) and during December for contents of fat and proteins (4.47 % and 3.37 % respectively). Effect of seasons on milk products was evaluated according to market demand. Highest demand for cheese and quark was recorded during spring months.