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Hodnocení laterality koní
SEDLÁČKOVÁ HANZLÍKOVÁ, Petra
Laterality is the ability of animals to predictably and non-randomly prioritize the right or left side of the body in a variety of activities. The aim of this diploma thesis was to create an overview of existing scientific knowledge concerning the laterality of livestock with a focus on horses. In the next part, the aim was to evaluate the laterality of horses using five tests and then evaluate their results. A total of eight horses of the Czech Warmblood breed were tested by five different laterality tests and 1216 measurements were performed. Testing of horses was performed on a family organic farm, dealing with both animal - horse breeding and plant production. Each horse was tested by three tests evaluating motor laterality (forearm preference test when grazing, galloping and forelimb use preference when getting up from a lying position), one test evaluating sensory laterality (olfactory preference test using one nostril over the other) and foreleg test swirls on the head. Laterality was determined by calculating the laterality index (LI). The results were evaluated using the statistical program Statistics 12 (TIBCO?), chi-square test and correlation analysis. Four horses agreed on most laterality tests. In total, 62,5 % of horses were ambilateral, 25 % left-handed and 12,5 % right-handed. No effect of age (p = 0,549) or sex (p = 0,202) on horse laterality was demonstrated. Motor tests proved to be the most reliable (67 to 100 %). On the contrary, the least reliable was the olfactory test, which showed the highest error rate, specifically 87,5 %. Knowledge of sensory and emotional lateralization can be beneficial in various types of training, training, but also in the normal life of the horse.
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