Beurteilende(r)Name: | Dr. Priv.-Doz. Roswitha Baumung |
Herkunftsbetrieb: | |
Arbeit |
Typ der Arbeit: | Masterarbeit |
Sprache der Arbeit: | Englisch |
Titel der Arbeit in Originalsprache: | Analysis of the Genetic Diversity in Divergent Sheep Populations |
Titel der Arbeit in deutsch: | Analyse der genetischen Diversität unterschiedlicher Schafpopulationen |
Titel der Arbeit in englisch: | Analysis of the genetic diversity in divergent sheep populations |
Publikationsmonat: | 06.2009 |
Seitenanzahl: | 29 |
Online-Katalog der Universitätsbibliothek Bodenkultur |
AC-Nummer: | AC07957964 |
Abstract |
Abstract in Deutsch: | That study aimed to characterise the genetic variability of three French sheep populations with pedigree and/or molecular data and, when possible, to compare the results provided by both sources of information. These three populations were the Rambouillet Merino flock and the Arles Merino, known to originate from the same Spanish Merino population, and a highly inbred experimental flock from the Préalpes breed recently derived from this breed. In the Préalpes flock, the average inbreeding coefficient of animals born from 2003 to 2006 with both parents known was 0.67. In the Rambouillet flock, combining the analysis of the current pedigree data file with a restricted completeness level and the results of a former study led to an estimation of 0.56 for the average inbreeding coefficient of animals born in 2007. Molecular analyses were conducted using samples of 107 animals from the Rambouillet flock and the Arles Merino breed and a panel of 25 microsatellite markers. The analyses of individual distance based on allele sharing distance showed a complete differentiation between the two populations. The value of heterozygosity was 0.49 in the Rambouillet flock and 0.75 in the Arles breed. GST and FST were both equal to (0.19). At the breed level, few correlations were found between genealogical and molecular parameters. Kinships and individual similarity estimators were significantly correlated. |
Abstract in Englisch: | That study aimed to characterise the genetic variability of three French sheep populations with pedigree and/or molecular data and, when possible, to compare the results provided by both sources of information. These three populations were the Rambouillet Merino flock and the Arles Merino, known to originate from the same Spanish Merino population, and a highly inbred experimental flock from the Préalpes breed recently derived from this breed. In the Préalpes flock, the average inbreeding coefficient of animals born from 2003 to 2006 with both parents known was 0.67. In the Rambouillet flock, combining the analysis of the current pedigree data file with a restricted completeness level and the results of a former study led to an estimation of 0.56 for the average inbreeding coefficient of animals born in 2007. Molecular analyses were conducted using samples of 107 animals from the Rambouillet flock and the Arles Merino breed and a panel of 25 microsatellite markers. The analyses of individual distance based on allele sharing distance showed a complete differentiation between the two populations. The value of heterozygosity was 0.49 in the Rambouillet flock and 0.75 in the Arles breed. GST and FST were both equal to (0.19). At the breed level, few correlations were found between genealogical and molecular parameters. Kinships and individual similarity estimators were significantly correlated. |
Schlagworte |
Schlagwörter Deutsch: | genetische Variabilität Schaf Inzucht Mikrosatelliten Heterozygotie |
Schlagwörter Englisch: | Genetic variability sheep inbreeding microsatellite heterozygosity |
Sonstiges |
Signatur: | D-14198 |
Organisationseinheit, auf der die Arbeit eingereicht wird: | H93200 Institut für Nutztierwissenschaften (NUWI) |