My documentary account
| Title: | International Sport Horse Data for Genetic Evaluation |
| Authors: | E. Thoren Hellsten |
| Material Type: | tessis and dissertation |
| Publication Date: | 2008 |
| ISBN (or other code): | 978-91-85913-65-7 |
| Size: | 48p |
| Languages: | English |
| Descriptors: |
Mots-clés cheval CORRELATION GENETIQUE ; ELEVAGE ; EVALUATION ; HERITABILITE ; JEUNE ; TESTEquivoc Autre Sport ; Compétition ; International ; Performance ; Suède |
| Abstract: | The aim of this thesis was to evaluate international sport horse data for use in genetic evaluations both within populations and between populations. An initial review showed that most sport horse producing breed organisations have created young horse testing schemes. Due to moderate to high heritabilities and highly positvie genetic correlations with competition results later in life these tests are good tools for selection could be improved by including both sexes in young horse tests where this is not yet done, and by shortening tests, where logn test periods are practised. Genetic connectedness among populations is an essential prerequisite for any kind of assessments of data between them. Genetic connectedness among the five investigated sport horse populations in this thesis is at such a level that it would be feasible to use their national breeding valuses based on young horse data in international genetic evaluations for estimation of genetic correlations among similar phenotypic tratis. This is possible if correct and internationally unique IDs of horses can be established.Genetic correlations were estimated between phenotypically similar traits tested in Danish Warmblood (DWB) and Swedish Warmblood (SWB). They were highly positive for performance traits and reliabilities for the corresponding breeding values generally became higher when using information from both countries. Thus, mutual use of nationally calculated EBVs was considered possible when stallions are evaluated for use across countries. Moreover a joint genetic evaluation using MACE would be feasible and beneficial for both DWB and SWB. |
| Provenance : | Doctoral thesis - Swedish University of Agricultural Sciences -Faculty of veterinary medicine and animal science- Department of animal breeding and genetics - Uppsala |
| Classement cheval : | D03 |
Copies (2)
| Barcode | Call number | Media type | Location | Section | Status |
|---|---|---|---|---|---|
| 100360 | §D03002 | Thèse / Mémoire | Haras national du Pin | Génétique - Amélioration génétique | Not for loan |
| 108144 | D03006 | Thèse / Mémoire | Haras national du Pin | Génétique - Amélioration génétique | Not for loan |