Abstracts
Suchen | Eingabe | Hilfe | 0.02s

Arbeit :: Detailansicht


AutorIn
Name: Mahmoud Abd El Ati
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)


Zurück zur Auswahl der Arbeiten
Zurück zur Auswahl der Organisationseinheiten