Browsing by Subject "jämtlanninpystykorva"

The aim of this study was to estimate the genetic parameters of elk hunting traits in Jämthunds. There were nineteen traits under consideration. Heritabilities, repeatabilities, and genetic and phenotypic correlations were estimated for the traits. Also, coefficient of inbreeding and genetic trends were estimated. The data consisted of results from official elk hunting trials collected by Suomen Harmaahirvikoirajärjestö ry in 2012-2016. There were 46 221 results, from which 23 335 of Jämthunds. The pedigree data was provided by The Finnish Kennel Club and it included 31 544 Jämthunds. Significance of the fixed effects was estimated using F-test in analysis of variance with RStudio 1.0.136. The pedigree was pruned with RelaX2 1.54-pedigree analysis programme. Variance components were estimated with DMU-package using AI-REML-approach. The estimated heritabilities were low and varied between 0.00 and 0.047. The highest heritability was obtained for search and the lowest for obedience during work. Genetic correlations varied from -0.25 to 0.98, and the strongest were estimated for most of the bark related traits. The genetic trend has been positive in all traits, except for obedience traits. The coefficient of inbreeding for dogs born in 2016 was approximately 7.03 %, and the coefficient of inbreeding has decreased 0.26 % in the last decade. There are multiple non-genetic factors that affect the traits, and the data is based on subjectively evaluated variables. It is possible to improve genetic evaluation by collecting more information on trial conditions, by using the whole scale of points during the evaluation, and by making more objective evaluations of the traits. The estimated breeding values of the important traits can be used in selection of the parent of the next generation.