National Repository of Grey Literature 85 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Analýza parametrov mliečnej úžitkovosti u dojníc pred a po inštalácii ventilátorov v stajni
Kancír, Ján
The aim of the study is to analyse milk performance parameters in dairy cows before and after the installation of fans in the barn. For this purpose, observation was carried out in a particular farm. The observation was carried out during the period from 2016 to the end of 2022. The whole observation was divided into two periods namely the period before and the period after the installation of the ventilators. The milk performance parameters will mainly include milk yield (kg milk), lactation order (n) and lactation stage (days). From the results obtained, the following can be stated. The installation of fans had an effect on milk yield over the whole follow-up period where before installation the mean milk yield was lower (P > 0.05) and after installation the milk yield was higher (P < 0.01). The effect of fans was also observed on milk constituent content. Considering only the summer months (June, July, August), it was found that there was a demonstrable increase (P < 0.01) in milk yield in cows after installation of fans. Regarding milk constituents, the installation had no demonstrable effect (P > 0.05). Nevertheless, a similar trend of reduction in fat and protein percentage can be seen as in the whole follow-up.
Vliv stájového mikroklimatu a intenzity osvětlení na mléčnou užitkovost a reprodukci holštýnských dojnic ve vybraném chovu
Fábry, Ivan
This bachelor thesis focuses on stable microclimate and lighting intensity and their effect on milk yield and reproduction parameters of cattle. The literature review was focused on the parameters of the stable microclimate, milk yield and reproduction of cattle and the factors that influence them. In the practical part was evaluated the correlation between temperature, lighting intensity and parameters of milk yield (milk quantity and composition) and reproduction (length of service period, percentage of pregnancy). The data presented in the practical part of the bachelor thesis come from a specific farm in the Zlín region. Temperature and light intensity were measured by Minikin RTi/QTi sensor, which was placed in the selected stable. The data were continuously downloaded and analysed by mathematical and statistical methods to evaluate the correlation between the measured data and the parameters of milk yield and reproduction.
Vliv teploty vzduchu ve stáji na parametry mléčné užitkovosti dojnic českého strakatého skotu v konkrétním chovu
Hanáková, Šárka
The aim of this thesis is to analyse the effect of air temperature on milk yield parameters of dairy cattle in a specific breeding system. The milk yield parameters included milk yield (kg milk), lactation order (n), lactation phase (days) and milk components content (% fat and % protein). The observations were carried out between January and December 2022. Data on milk yield parameters were obtained from the results of the Performance Check (PC). A total of 7 863 individual cases (dairy cows) were evaluated. During the monitoring period, air tem-perature in the stable (°C), relative humidity (%) were collected using a temperature-humidity sensor (HOBO). The results showed that temperature had no statistically significant effect on milk yield, lactation stage and lactation sequence. On the other hand, there were significant differences in the content of milk components, which were fat and protein (P < 0.01). In the case of relative humidity, there was a statistically significant effect on milk yield, where milk yield decreased with increasing values of relative humidity in the cows studied (P < 0.01). Relative humidity also influenced fat and protein content (P < 0.01). In the case of THI, there were no statistically significant differences in milk yield, lactation order and lactation phase (P > 0.05), but statistically significant differences were found for milk components (P < 0.01).
Inventarizace veřejné zeleně ve vybraném území a návrh dosadby
The diploma thesis deals with the inventory of greenery and the proposal of replanting in the spa park Aurora in Třeboň. The goal is to evaluate the existing greenery and to propose replanting and modifications of the area. The first part of this thesis focuses on the historical development, function and importance of greenery in cities. The thesis describes the forms of public greenery, its planting and subsequent care as steps to improve the urban microclimate. In the practical part, a dendrological survey and inventory of meadow communities is elaborated. The area is divided into 9 separate blocks for better clarity and the greenery in these blocks is mapped in detail. The conclusion describes specific proposals that will improve the local microclimate, increase biodiversity and aesthetic value while maintaining the overall character of the park.
Summary Research Report
Man, Matěj ; Kačmarová, Lucie ; Prošek, Jiří ; Vébrová, Dana ; Růžičková, Anna ; Müllerová, Jana
The summary report provides a detailed description of the project activities, the project methodology, the project results and a commentary/discussion of the individual results including a passage on the possibilities of sustainability of the project activities after the end of the project and suggestions for future application of the project results.
Green and blue infrastructure: means of reducing surface temperatures in the urban environment
Climate change may accelerate the Urban Heat Island (UHI) effect with many consequences for the well-being of human populations in cities. Green and blue infrastructures (GBI) are presented as a way to mitigate the UHI effect. In our study, the influence of GBI (primarily less studied types) on surface temperature (ST) was tested using a thermal camera. Various types of GBI (e. g. tree shade and lawn) and their combination were compared.
Vyhodnocení vztahu stájového mikroklimatu, užitkovosti a úhynu z vybraného chovu prasat
KOPIC, Pavel
The diploma thesis consists of a literature review specializing in pig breeding from a legislative, but also a physical view of the stable microclimate with its effects on the performance and health status of pigs for fattening. In the company Mavela Dynín a.s. with the operation in Mazelov, these data were gradually ascertained in the hall divided into two parts (by the pond, by the road). Ammonia concentrations, relative humidity, temperature and their effect on pig death. From the measured data, arithmetic averages of ammonia concentration and air flow were calculated, which determined the mass flows of the pollutant in mg.s-1 in and out of the stable. Neither side exceeded the emission limit, which is 3.6 kg NH3 ks-1 rok-1. In the first stop at the pond, the average temperature was 19.2 ° C, the average humidity was 58.5 % and the average ammonia concentration was 3.9337 mg.m-3. The total mortality under these conditions was 122 pieces. On the side of the road, the average temperature was 19.8 ° C, the average relative humidity was 61.3 % and the average ammonia concentration was 3.4398 mg.m-3. Under these conditions, the death of 148 pigs was found. In the second stop, the average temperature on the side of the pond was 20.3 ° C, the average relative humidity was 66.88 % and the average ammonia concentration was 3.8057 mg.m-3. The total death on the side of the pond was 64 pigs. On the road side, the average temperature was 20.9 ° C, the average relative humidity was 67.62 % and the average ammonia concentration was 3.3196 mg.m-3. The total death on the side of the road was 94 pigs. The results show that pigs in breeding thrive more in the summer months (second stop) in the part of the pond. This is most likely due to the higher temperature around 20.5 ° C and the relative humidity around 67 %. In the second stop, the mortality is 59 % lower than in conditions with lower temperature and relative humidity. The company should take from these data that a wetter and warmer environment is more favorable for pig farming. With respect to this knowledge, he will have more than half as efficient breeding. The specific production of ammonia and the concentration of ammonia in the air are very burdensome for the environment, and therefore limit values are issued, according to which every company should follow. In the case of the Mazelov plant, these values were not exceeded.
Summary Research Report
Brůna, Josef ; Wild, Jan ; Hederová, Lucia ; Klinerová, Tereza ; Macek, Martin ; Urbanová, Renáta
The result has mainly a documentary and supporting role for further use of the main result - the microclimatic map. It documents the conditions of its creation and contains other valuable data. The research report will serve as a basis for evaluating the impact of microclimate on forest regeneration, protected species and forest habitats.
Microclimate as a driver of species distribution and community composition of bryophytes compared with lichens
Růžičková, Anna ; Man, Matěj (advisor) ; Starosta, Jakub (referee)
This bachelor thesis deals with the influence of microclimate on species distribution and composition of bryophyte and lichen communities. It defines the term microclimate, characterizes the specific properties of bryophytes responsible for their sensitivity to microclimatic conditions and includes a comparison of the role of individual microclimatic factors in controlling the distribution of bryophytes and lichens. The key microclimatic factors for bryophytes are humidity and air temperature, but the significance of each varies between functional groups of species and depending on the type of biome. With the available portable measuring devices with large battery capacity and memory storage, it is now possible to measure in-situ microclimate for the long-term and also with high spatial and temporal resolution. Despite that, there are currently only 12 bryological studies that provide continuously measured field microclimatic data on small spatial scales. The main part of the thesis summarizes these studies and compares the methodologies used. The paper can serve as a starting material for designing bryological microclimatic studies.

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