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Chovatelský přínos lineárního popisu exteriéru teplokrevných hříbat
BLÁHOVÁ, Aneta
The bachelor thesis deals with the linear description of warmblood foals' exterior and its breeding value. The aim of this thesis was to provide an overview of the current knowledge regarding linear description and the latest information on the evaluation of warmblood horses. Another aim was to create a summary of the evaluation of warmblood foals using the linear description method, evaluate the correlation between selected traits of the linear description of the observed foals and their sires, and relate the linear descriptions of stallions and their offspring. A total of 11 traits of 1139 foals born between 2020 and 2023 were included in the evaluation, as well as the linear description of 22 traits of their fathers, which included 177 stallions of the Czech warmblood breed. For closer examination, only stallions with more than 23 offspring were selected. This criterion was met by 12 stallions. The average score for all traits of the linear description of the observed foal population was around 3. The score of 3 was also the most frequently given score for most traits. An exception was the evaluation of the head, where the mode was a score of 4. The score of 3 dominated in the evaluation of the hoof (89%), the stan-ce of the forelimbs (88%), the back (84%), the hind suspensory ligaments (79%), the croup (71%), and the stance of the hind limbs (69%). For other traits, the frequency of assigned scores was closer to a normal distribution. Correlation analysis showed that there is a low degree of dependency between a foal's head and the nobility of its father (r = 0.15), and that foals with a betterrated and more noble head have fathers with a higher score in the nobility trait. The results of the thesis compare the total foal population with the offspring of individual stallions. The outputs showed, for example, that foals from the stallion Cannon Reuvekamp's Z have a smaller and more noble head with an average score of 3.91 compared to the rest of the population. Foals from the stallion Heartbreak, who have a more open stance of the hind limbs with an average score of 2.76 compared to other foals. This data should be beneficial for breeders and provide useful information when selecting a suitable stallion for their mares.
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Variability of the linear description of the cold-blooded horses in the Czech Republic
RYBNÍČKOVÁ, Karolína
The aim of the study was to compare the cold-blooded breeds of horses bred in the Czech Republic in terms of variability of shaping the exterior and observe differences among the monitored breeds. It was a breed: Czech-Moravian Belgian horse (CMB), Norick (N)and Silesian Norick horse (SN). Whereas these breeds are originated on a different genetic basis and under different conditions, it is assumed that there is difference between them in the formation of physical characteristics. The results showed that the cold-blooded breeds varies highly statistically in these characters: the withers height measured by tape (WHT), circumference of tibia (CT), type, scope, length of neck, deployment of neck, withers length, length of back, loins length, crop length, the slope of the croup, the width of the body scoop , position of the hind limbs, spaciousness of step. For example, a significant difference among breeds was found in WHT, which has the smallest SN and distinguished it from the other two breeds. Furthermore differs CMB, which has the smallest CT, and thus differs it from N and SN. SN has the longest frame of body and the smallest chest circumference of the studied breeds. The highest deploymentof of neck and the shortest neck was detected in CMB in comparison with N and SN. At an average the longest spine was evaluated in SN and the shortest spine was in the CMB. The best spaciousness of step is evaluation in SN. The correlations among selected characters were monitored too. Strong dependence was found between WHT and WHS (withers height measured by stick) in all three breeds.
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Evaluation number and quality of offspring stallions Silesian noriker
BARTOKOVÁ, Markéta
The Silesian noriker is an original Czech breed of a coldblooded horse whose stud book was approved by the Ministry of Agriculture in 1995.The Silesian noricker is a strong coldblooded horse with a relatively less harmonious body structure used at present not only in agriculture and forestry but also for rehabilitation and recreation purposes. The aim of the diploma work was to work out a list of information about stud horses being in the contemporary stud as noted down in the stud book. Besides, the work focuses at proving a possible existence of the differences between the outcome of the evaluation of the exterior, performance tests and the characteristic features inherited by the descendants of the stallions. Moreover, the main aim of the work was to find out if there are individuals among stud stallions which have sufficient number of descendants being able to provide an objective evaluation of heredity control. Studbook Silesian noriker recorded 44 sires, of which only 23 subjects had descendants in breeding; the number was 266 individuals. The stud book of the SN kept files of 44 stud stallions out which only 23 individuals had descendants in stud, whose number was 266. The data for the purpose of the analysis have been based on the records in the stud books of the association of the unions of horse breeders: body measurements, evaluation of the exterior and the results of the performance tests. All the data have been presented and evaluated both in charts and graphs. In conclusion, stallions having 10 and more descendants have been evaluated in detail and the results of the latter have been compared with the average ones of SN in stud. The analysis has proved that only 68% of the whole number of descendants is represented by those written in the stud book of SN. The average body measurements were: stick withers 159,07 cm; tape withers 170,88 cm, chest perimeter 204,85 cm, shin perimeter 23,20 cm. The evaluation of the exterior showed the average result 7,47 points. The final result of the performance tests was 7, 47 points. According to the detailed analysis, out of 75 descendants only 44% belonged to SN. The Top rated offspring (exterior 7,76 and results performance tests 8,03) had of stallion Steiman 2885
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