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Evaluation of reproductive parameters in a herd of cattle
Blatský, Jaroslav ; Čítek, Jaroslav (advisor) ; Daniel, Daniel (referee)
The aim was to evaluate the reproductive performance of the dairy herd. Data were obtained on the farm ZZN Strakonice center Sousedovice from cows culled during 2015. The center treats an average of 250 cows that are kept free of manure and farm milked at four milking robots Lely - Astronaut. The most important reproduction traits were summarized and subsequently statistically processed.
Monitored were fertility parameters, milk yield and lifetime production, which were derived from a zootechnical records and monthly reports from milk recording system on 100 dairy cows. With increasing milk yields were deteriorating reproduction parameters such as artificial insemination index, insemination interval and number of days open. For the entire group of cows was monitored milk productivity and reproduction parameters related to parity. The average milk yield in the selected cows was 8579 kg of milk per lactation. With parity increased milk yield per lactation. As well as the average daily milk production and average milk production per day of calving interval. Insemination index and days open length were significantly longer for 2nd lactation where a large increase in milk yield negatively affected these parameters. Furthermore, we evaluated the lifetime milk production. The highest average yield per lactation reached cows cullet later than on 4th lactation. In these cows was detected milk production per lactation for 1000 kg higher than in cows that finished only 2 or 3 lactations. The lowest average yield per lactation was in cows that finished only two lactation. Furthermore, cows were evaluated according to the lactation curve. It was found that with increasing lactation persistence increases milk production but deteriorate the reproduction traits as a days open, insemination interval and insemination index. It was also found that with increasing lactation persistence decreases the longevity. Furthermore, we observed the level of milk productivity according to insemination index and found, that with increasing milk production increase insemination index.
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Time going to the work and work injuries
ŘEŽÁBKOVÁ, Jana
Commuting is regular travelling between one?s place of residence and the place of work. A lot of us surely remember our grandmothers and grandfathers talking keenly how they used to go to work to a farm, weaving factory, distillery and further facilities. It used to be usual that people had jobs at distances they could walk. On the other hand nowadays it is quite normal that some people have their places of work tens of kilometres from their homes and they have to commute by various means of transport, get up early in the morning and return late in the evening. Technical evolution has made transport faster but it also brought longer distances to travel to work. Commuting is particularly necessary at places with imbalance between supply of and demand for jobs. About one third of inhabitants commute in the Czech Republic and the travel costs represent approximately ten per cent of family budgets. People that spend more time travelling to work are wrong tempered, they are tired and stressed by commuting and occupational accidents occur as a subsequence of these factors. The aim of the Thesis ??Commuting time and workplace accidents?q was to discover what the average commuting time was and whether commuting affected the health condition of a human. Another aim was to find out how frequent workplace accidents were and how consistent employees were in reporting workplace accidents. 5 hypotheses were set to reach the aim. A quantitative method of questionnaire survey was applied on the research; the data were collected from commuting employees of a health facility, a school and a manufacturing company and compared. The data analyses did not prove that commuting caused health problems, so the hypothesis No. 1 was refuted. The second hypothesis suggesting that people from villages spend more time commuting than those living in towns was confirmed. Another hypothesis that each employee has suffered from a workplace accident was on the other hand refuted. The fourth hypothesis suggesting that fatigue, bad concentration, insomnia as a subsequence of commutation cause workplace accidents was also refuted. The last hypothesis suggesting that employees often do not inform their employers on their workplace accidents was also refuted. The Bachelor Thesis may improve knowledge of the time spent by commuting to work and subsequent occurrence of workplace accidents. The manual designed proposes preventive measures against workplace accidents and brings information in this field.
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Transfer of juvenile pikeperch (Sander lucioperca L.) from the pond keeping to the controlled conditions of intensive farming
HAJÍČEK, Jiří
Zander (Sander lucioperca) is a species whose importance is growing in European aquaculture. At present there are a number of studies underway to examine the feasibility of removing zander from their natural environment and breeding them intensively in aquacultures. Our study involved placing juvenile zander into aquacultures. Our objective was to determine whether the quantity and density of fingerlings placed in the aquaculture has a bearing on their survival rate.We placed 810,000 follicular fingerlings into a 2.75ha pond. We then dredged 83,000 rapid fingerlings. The survival rate of the dredged fingerlings was 10.25%. The foster period was 48 days. We then divided the juvenile fish into two groups: Group A: larger fish with an average length of 70.47mm ? 6.04mm and average weight of 3.36g ? 0.65g Group B: smaller fish with an average length of 47.03mm ? 3.75mm and average weight 0.66g ? 0.81g. The fish were fed using the "co-feeding" method (Chyromosus plumosus) with the addition of granular fodder. The influence of quantity and density of the fingerlings on their survival rate and likelihood of cannibalism. In each annual season we examined the effectiveness of raising juvenile zander in a recirculating system using a FROV-JU device. We monitored the survival rate of bred fish and their growth and feeding ratio during fostering.
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Analysis of the selected economic time series
BEDNÁŘOVÁ, Michaela
The goal of this bachelors work was to analyse the selected time series by using the methods of evaluating data. These time series describe the average wage in the finance and insurance industry. With the help of regression analysis to determine and adjust the trend, identify and set seasonality (you can also say make trend and seasonal decomposition). Another task was to make an appropriate model, which will describe the analysed data the most accurately. Than in the end to verify all of these calculations and facts by special statistical tests, to be able to make a prediction about the future development of the average wages. However at first, the readers of this work were familiarized with the issues of the time series. I described their use and the ways in which can the timely collected data be analysed, and I gave some examples of the time series. I also mentioned the characteristic of the analysed data, which were found on CSU. In the end of this work I summarized all the results and answers, based on the discussion in this bachelors work. By executing all of my tasks I can say that I fulfilled my bachelor work.
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Simulation of Impacts of Labor Laws on Labor Market
Dlouhá, Ilona ; Vacek, Pavel (advisor) ; Fialová, Kamila (referee)
This master thesis analyzes the differences in the labor laws and their impacts on the development of the labor markets in large selection of OECD countries, including the Czech Republic. The thesis covers both historical and current data including the late-2000s recession. The labor market performance is measured by hours worked per person, which combines the extensive margin (employment rate) and the intensive margin (hours worked by employed individuals). Labor laws are represented by the average and marginal tax wedges, employment protection legislation, labor market policies and trade union density. The thesis contains an empirical model of the relationship between the labor market performance and labor laws for 24 OECD countries for the period 2000-2008. The thesis shows that the lower hours worked are associated with more strict employment protection legislation and lower trade union density. The effect of taxation (in terms of tax wedges) varies substantially among different subgroups of the population, but it is generally quite weak (elasticity around -0.15) and it cannot explain the overall differences in the development of the labor market performance among countries.
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Could we blame our friends for all the bad habits? What affects the excessive consumption of alcohol, smoking, drugs and risky sex
Urbánek, Jakub ; Misic, Viktorija (advisor) ; Ševčíková, Michaela (referee)
The aim is to answer a few hypotheses related to the consumption of risky goods - alcohol, smoking, drugs - and risky sex by students of 1st and 3rd grades of three different secondary schools. The theoretical part of the text is a description of earlier contributions to this theme. It creates the basis on which the hypotheses are constructed, describing all aspects with directly or indirectly impacts decisions making process of the rate of risky consumption. In practical part I'm testing hypothesis using data from a questionnaire survey. I will try to identify the effects of the "influence of others" on individual consumption in the class. I'll find out that in classrooms where there is a so called "villain" the average consumption of risky goods greatly increase and vice versa, in classes with so called "goody-goody", average consumption of those goods decreases.
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The Comparison of Websites of Selected Worldwide Cties
Novák, David ; Toman, Prokop (advisor) ; Pavlíček, Antonín (referee)
The main goal of this thesis is to create a methodology for comparison of web pages of worldwide cities and to apply it on the selected websites. Introductory theoretical part describes the history and the present of web pages and shows their categorization, technologies, key statistics and reasons of rising significance of city websites with emphasis on e-Government. The official web pages of London, New York and Sydney are compared. These are modern world-known cities comparable in population, used languages and the overall attractiveness. Methodology of comparison tries to be objective, universal and reusable. It evaluates the websites with a set of criteria divided into 4 domains: graphical design, usability, accessibility and information content. In the end the final ratings are determined as weighted averages of criteria and domains.
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The assessment of the presence of the intracranial hypertension by means of the compression Doppler-ultrasound in posthaemorhagic newborns' hydrocephalu
Rejtar, Pavel ; Eliáš, Pavel (advisor) ; Šprindrich, Jan (referee) ; Skotáková, Jarmila (referee)
Aim. In our study we focused on the ultrasound diagnostics of intracranial hypertension in neonates with diagnosis of posthemorrhagic hydrocephalus (PHH). We wanted to try and verify the method of "pressure provocation test". When performing this test, the great fonticulus is compressed by ultrasound probe and simultaneously systolic and diastolic velocities are being measured in the internal genu of the anterior cerebral artery with resisistive index calculation. Pressure on fonticulus during examination shows us the reserve capacity of liquor spaces and the response in cerebral arteries blood flow. The primary objective was to verify, if the basic and compressive resistive index correlates with the presence and eventually with the severity of intracranial hypertension. The secondary objective was to find relationship between the degree of intracranial hypertension and the diameter of cerebral ventricles, to asses the rapidity of PHH developement and to find out, in which period is PHH the most common. Method. In years 1999 - 2008, 52 children with diagnosis of posthemorrhagic hydrocephalus were examined in our department. The average birth weight in children with PHH was 1436 g (550 - 4090 g, median 1150 g). The average age was 29,6 weeks (24 - 41 weeks, median 28 weeks). Totally, 73 % of children...
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Causes of discomfort perceived by laptop users
Kárníková, Libuše ; Véle, František (referee) ; Pavlů, Dagmar (advisor)
Work title: Causes of discomfort perceived by laptop users Work objectives: The objective of this thesis is to analyze which form factors of computers are being used by today's university students, the postures and habbits exerted during the use and their effect on a perceived discomfort. Determining the factors affecting the intensity of discomfort during the work with laptop will enable us to suggest suitable precautions that could improve user's discomfort. Methods: Research method of this thesis was a survey conducted with 100 Czech university students. Questionnaire monitored the factors, that were suspected, according to studied literature, to affect the intensity of perceived discomfort. Dependency of reported discomfort on recorded data sets was analysed by regression analysis. Results: Today's university students are using mostly laptops. With increasing percentage of time spent using notebook (as opposed to time spent with desktop computer) average intensity of discomfort is slightly increasing. During the work, laptop users were experiencing the greatest intensity of discomfort in the neck and head. There was no singnificant reported dependence between intensity of discomfort and the time spent using the laptop. Also, no statistically significant influence on intensity of discomfort was...
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Silver fir growth depending on altitude and slope exposition in National park Krkonoše
Zapadlo, Jan ; Kupka, Ivo (advisor) ; Baláš, Martin (referee)
This Master thesis deals with a dynamic of planting development of silver fir (Abies Alba Mill.) depending on an altitude and exposure in the mountain conditions of the western part of the Krkonose (Giant Mountain) National Park. Further it examines the influence of a tree age, average temperature and precipitation amounts on such a development.
Annual silver fir height increments have been compared on the four selected sites which differ from each other, in particular, by their altitude but other characteristics have been considered as well. Analyses proved that there were significant statistical differences between an average height increments on these sites. Through the methods of correlation and regression analyses impacts of other factors on the said differences along with the intensity of such impacts have been identified. In addition to the altitude a factor of an average temperature, precipitation amount during a given period and a tree age have been determined. Whilst examining the dependency of fir development using more factors simultaneously a linear regression model of dependency between the fir height increments and joint effects of the aforementioned factors has been created.
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