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Hereditary monogenic health disorders in canine breeds in relation to breeding
ORSÁKOVÁ, Kamila
This thesis deals with problematic of prevalence of single-gene disorders for various dog breeds. The goal was to discover the groups of dog breed with the highest prevalence of single-gene disorders and discover which of these disorders tends to affects most of the dog breeds. We have evaluated 23 closely related groups of dog breeds (Parkerová et al. 2017) with the appearance of some single-gene disorder as we predicted based on our analysis based on OMIA database dated to year 2018-2020. The analysis showed us that the Neuronal Ceroid Lipofuscinosis (NCL) and Progressive Rod-Cone Degeneration (PRCD) affecting most of the dog breeds. We also discovered that the genetically closely related dog breed group 20T, which contains 16 dog breeds, suffers from over 49 types of single-gene disorders. We also discovered that the Border Collie is the dog breed with the highest single-gene disorder prevalence in previously mentioned group 20T. This dog breed is affected by 9 disorders at least. In our analysis the dog breed Labrador Retriever and German Shepherd are suffering from most types of single-gene disorder (more than 15). These dog breeds are one of the most common dog breeds in Czech Republic. This finding supports the hypothesis that the popular dog breeds tends to have better mapped genome and are subjects of testing more often. This thesis provides the characteristic of selected dog breeds. The genetic specifications also contains the recommended breeding method parameters for the minimization of disorders in population.

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