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Orientation in cattle on new grazing area
BUNDOVÁ, Michaela
This study was focused on cattle body orientation in a new pasture environment. Environmental conditions that could affect orientation were also evaluated. Data were collected by direct observation of three groups of cattle for three days from 7:00 to 19:00 each hour. Photographs of individuals were taken and the direction to north was determined using a compass. Simultaneously, meteorological data (temperature, relative humidity, wind direction and velocity, precipitation) were also recorded each hour.
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Verification of magnetic alignment in mammals
KUNCLOVÁ, Kateřina
This thesis was focused on determining the orientation of the body of domestic sheep while grazing or resting. Attention was also paid to the assessment of environmental conditions that may affect the position of animal behaviour. Data were collected through the direct observation compared to the previous studies, which have been based on satellite images from Google Earth. In this experiment, only selected designated individuals were evaluated. The direct observation detected the individual preferences of animals, not only the direction but also the location. The evaluating of photos of the animals found out, according to the time of day,north and west facing position of the body. The more significant directional preference was documented in resting individuals.
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Stanovení pozičního chování savců se zaměřením na magnetické pole Země
FOLEJTAROVÁ, Lucie
Currently, much attention is paid to magnetoreception, a sense which allows an organism to detect a magnetic field of the earth. Now, this discovery is related to positional behaviour of animals (magnetic alignment) in the magnetic field and the world phenomenon of "magnetic cows". The magnetic alignment is a spontaneous (congenital) behaviour, when the animal puts its body axis into the positions of north - south or east - west. Most studies have demonstrated the north - south direction preference. This work contributes to clarify positional behaviour of cattle during the daily cycle. This study is based on a different data collection and is targeted at individuals in the herd. Individuals were photographed in a given direction, at hourly intervals. The magnetic alignment was determined in 26 individuals from three different cattle herds, mainly east or west. Statistically significant results during daily cycles in individual intervals also confirmed the north - south direction preference. There were also discussed the environmental conditions that may affect the final result. For inconclusive results, the individuals were probably motivated by temporarily more important local incentives.
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Magnetic orientation of chosen dog breeds
Konderla, Lukáš ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
Theoretical part of this thesis deals at first with a dog breed Patterdale Terrier. There is also mentioned the beginning of the history of the breed, it´s characteristic description and formally recognized standard. Part of the bachelor is the economic analysis, which is made subjectively and could serve to possible new Patterdale Terrie breeders. This breed was subsequently used as the object of studying at the practical section. Furthermore, the work deals with the issue of magnetism, namely the phenomenon called magnetoreception. Are outlined here the main hypothesis of mechanisms functioning of magnetoreception.
The practical part of the bachelor is aimed at the body orientation monitoring of chosen dogs at water intake. Statistical analysis supported the hypothesis of North-South direction preference by different animals in various activities. Dogs were turning their bodies in a range of 170°-210°.
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Fluctuation of Earth's magnetic field and its influence on dogs
Beránková, Kateřina ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
Fluctuation of Earth's magnetic field and its influence on dogs
Kateřina Beránková
The aim of the bachelor thesis was monitoring and documenting the orientation selected breeds of dogs when feeding, depending on fluctuation of the Earth's magnetic field.
The theoretical part of this thesis deals with a summary of information about one of the three selected breeds of dogs (deutscher boxer), that was just like the rest of breeds used as a model animal for the practical part. In the next part is introduced magnetoreception, therefore, the ability of animals to perceive the Earth's magnetic field and its hypothetical models of functioning. There is also described magnetic orientation and its other forms which are magnetic map, magnetic compass and magnetic alignment, which is spontaneous orientation of the body axis of the animal in certain direction, for example, in the North-South axis by influence of the Earth's magnetic field. The practical part of the thesis mainly deals with exploring the influence of the Earth's magnetic field on the orientation of the head and of the body axis, when dogs are feeding. Selected breeds of dogs were Deutscher boxer, Bernese mountain dog, Chodsky dog and hybrid of Labrador retriever and Siberian husky. Statistical analysis showed North-South direction preference only in the case of the breed Chodsky dog. For other breeds of dogs, East-West orientation was dominated.
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Influence of magnetic weather on dogs
Junas, Tomáš ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
The bachelor thesis deals with the theme of magnetism, if you like magnetic influence of weather on dogs. The first part is devoted to a literature review on the issue of magnetism and researched breeds. The practical part contains the research on the influence of magnetic field on the orientation of the dog in the water intake. Three dogs were studied using a photo-trap. In all three dogs was statistically found preference of the south-west direction, which does not correspond to previous research. The cause of the deviations could be e.g. high-voltage lines, the fluctuation of the earth's magnetic field, or a local anomaly of the magnetic field. Economic analysis of breeding the dog, it was found that the breeding of these breeds cannot be considered as gainful activity.
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