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Analýza využitelnosti jednoduchých indikátorů pastevního tlaku zvěře na les pro plánování lovu v honitbách
Rachůnek, Karel
This work deals with the analysis and evaluation of the usability of simple indicators of grazing pressure of game on the forest. The territory in the Zlín region was selected for the elaboration of this bachelor's thesis, specifically the hunting of MS Kyčera. The field survey was performed by the patrol method. Data from control and comparison areas (CCA), transects and artificial cultures were used to assess damage. Eight stands were selected for evaluation. Three main tree species in the area were evaluated, namely beech (Fagus sylvatica), Norway spruce (Picea abies) and white fir (Abies alba). Based on the damage by grazing pressure, the number of ungulates in the given area was evaluated.
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Vliv ročního období a četnosti pastvy na produkci mléka a mléčných výrobků od krav holštýnského skotu ve vybraném podniku
Kulišťáková, Michaela
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.
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Hodnocení managementu pastvy ovcí v chráněných oblastech
Trojanová, Eva
The diploma thesis Evaluation of Sheep Grazing Management in Protected Areas deals with the use of grazing for sheep nutrition, sheep ethology, especially the influences that affect grazing behavior, and the use of grazing in the maintenance of vegetation in the National Nature Reserve of Mohelno Serpentinite Steppe. The 2018 grazing season in the National Nature Reserve of Mohelno Serpentinite Steppe took place from 23rd April to 25th May 2018 and three ethological observations were taken during this grazing season. On 9th, 17th and 21st May, the activities of the herd were recorded – namely lying, standing, walking and grazing. On the first observed day (May 9), the activities were represented in the ratio: grazing 37.50%, walking 12.35%, standing 5.81% and lying 44.34%. On the second day of observation (May 17), grazing took up 39.15% of the total observation time, walking 12.27%, standing 18.95% and lying 29.62%. On the last day of observation (May 21), the ratios of daily activities were: grazing 34.07%, walking 10.25%, standing 9.37% and lying 46.31%. Activities were also recorded depending on the grazing area, and the effect of air temperature on sheep behavior was investigated. The results are processed in charts and graphs in the appendix.
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Možnosti využití travních porostů v rámci agrolesnictví
Macek, Libor
The bachelor's thesis deals with the use of grasslands with a focus on grasses and clover in agroforestry systems. The first part describes the agroforestry itself – its characteristics and significance. Furthermore, emphasis is placed on woody plants suitable for agroforestry systems, especially in the conditions of Central Europ, as well as on their production and non-production functions. The most suitable representatives are for example, walnut (Juglans), poplar (Populus), but also less economically used representatives, such as cherry (Prunus) or rowan (Sorbus). At the same time, agroforestry is divided into certain units, which are characterized by their functions, both in the tropics and in Europe. The most typical systems in Europe are mainly silvopastoral systems, but also increasingly used alley cropping on arable land. The second part describes various agroforestry systems using grasslands as well as practical examples of functioning systems in different climate zones. Attention is also paid to individual members of the family Poaceae and Fabaceae suitable for their characteristic properties in these systems. The most important for shading appear to be tolerant representatives such as Agrostis stolonifera L. or Festuca arundinacea Schreb. from the Poaceae family or Meadow clover (Trifolium pratense L.) from the Fabaceae family. Possible interactions related to the coexistence of woody plants, grasses and clover, such as competition and allelopathy, are also not neglected.
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Methodological tasks of livestock density in pastures and etological observation of cattle in pasture
PETRÁŠ, Marek
The aim of the bachelor's thesis is to design suitable ways of expressing the load of grazing areas and monitoring cattle during grazing with regard to the condition of pastures. These goals were achieved on the basis of one-year monitoring and analysis of pasture on the monitored pastures. At the same time, when monitoring the botanical composition of pastures, the behavior of cattle on pasture and its influence on pasture and soil compaction were monitored.
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Populace hnědásků (Melitaeini) na nelesních stanovištích NP Podyjí refaunovaných pastvou koní
HÁJKOVÁ, Klára
This thesis evaluates the impact of refaunation by the Exmoor pony on populations of five Melitaea butterfly species - Melitaea athalia, M. cinxia, M. didyma, M. britomartis and M. aurelia inhabiting xeric grasslands of the Podyjí National Park - Havranické Vřesoviště and Mašovická Střelnice. Both grassland sites are grazed since 2018. I compared adult butterflies' demography structure, mobility, spatial distribution, and habitat requirements with an earlier study carried out before the impact of horses (Vodičková et al., 2019). I detected multiple changes, some of them attributable to the horses (e.g., butterfly spatial distribution) and some not (e.g., population sizes), but also a remarkable stability, e.g., in dispersal parameters.
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Vliv managementu na složení rostlinných společenstev a na ohrožené zájmové druhy NPR Vyšenské kopce
VACEK, Michal
The study assessed the impact of grazing on the composition of plant communities and endangered plant species. We studied the effect of grazing using (grazed and ungrazed control) permanent plots established 20 years ago in a semi-natural calcareous grassland in the National Nature Reserve Vyšenké kopce, and established new permanent experimental treatment plots for mowing. We compared the species composition and the numbers of species between managements and compared the results based on monitoring in different seasons of the year.
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Vliv refaunace velkými herbivory na vybrané skupiny hmyzu
VODIČKOVÁ, Veronika
This thesis studies the impact of refaunation by wild large ungulates on the butterflies, aculeate Hymenoptera, and Orthoptera assemblages. The data collection in field were undertaken in 2019 and 2020 within nine localities refaunated by large ungulates across the Czech Republic. Plots within the grazing enclosures were compared with controls, life history traits ordinations and comparisons of function traits diversities were used to interpret the patterns. Responses of the insect groups to refaunation are taxon specific, but generally, large ungulates contribute to creation and maintenance of functionally more diverse insect communities.
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Influence of dairy cow pasture on microbial contamination of raw cow milk
KOŠTELOVÁ, Lucie
The goal of the graduation theses was a comparsion of the hygienic quality of raw cow΄s milk, it was expressed by the value of total bacterial count (TBC) in breeds of milking cows using summer pasture (3 breeds) in comparsion with breeds without using the summer pasture. The breeds differed in technology of stabling and milking procedures, using predipping and size of the herd. During monitoring (from January till December 2007) it was discovered that the breeds using the summer pasture had lower average values of TBC (11,04.103.ml-1) in comparsion with the breeds without using the summer pasture (12,76.103.ml-1), the difference wasn´t statistically significant on the level of significance P < 0,05. Within the frame of breeds with pasture system was detected the lower microbiological contamination of milk in pasture period (TBC = 7,92.103.ml-1) in comparsion to non {--} pasture period (TBC = 13,38.103.ml-1). It´s possible to state that the pasture has positive effect on lowering of milk´s microbial contamination.
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Dairy cow pasture in relation to somatic cell count in raw cow milk
HNISOVÁ, Jana
The aim of this study was to observe the PSB (somatic cell counts) of raw milk. For this purpose we used dairy cows from different dairy cattle farms, i.e. there were compared three dairy herds using summer pasture and five dairy herds without using summer pasture. The estimated dairy farms (herds) used different technology of stables and milking process, diverged in predipping and postdipping of lacteal gland, and managed with different number of cows in herd. There were found significant differences (P = 0,03; the statistical significance was declared at P < 0,05) between PSB values (in average 260,99.103.ml-1) of summer pastured herds and PSB values (in average 282,44.103.ml-1) of non summer pastured herds, both (pastured and non pastured herds) estimated during the year 2007. The increasing amount of PSB was measured at the beginning of pasture season, and then followed the decreasing of PSB in two of observed herds. One of the observed herds (herd with higher presence of subclinical mastitis) had the same level of PSB during the whole pasture season.
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