Microsatellite analysis of genetic diversity in Indian chicken populations

Characterization of genetic diversity by employing molecular tools is a prerequisite in developing strategies for conservation and utilization of poultry genetic resources. We assessed genetic variation within and between six Indian chicken populations (Naked Neck, White Silkies, Commercial Layer an...

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Published inThe Journal of Poultry Science Vol. 44; no. 1; pp. 19 - 28
Main Authors Pirany, N.(University of Tabriz, East Azarbayejan (Iran)), Romanov, M.N, Ganpule, S.P, Devegowda, G, Prasad, D.T
Format Journal Article
LanguageEnglish
Published Ibaraki Japan Poultry Science Association 01.01.2007
Japan Science and Technology Agency
Subjects
BIODIVERSIDAD
BIODIVERSITE
BIODIVERSITY
chicken
CHICKENS
DISTANCE GENETIQUE
DISTANCIA GENETICA
GENETIC DISTANCE
genetic diversity
GENETIC MARKERS
GENETIC RESOURCES
INDE
INDIA
MARCADORES GENETICOS
MARQUEUR GENETIQUE
MICROSATELITES
MICROSATELLITE
microsatellite markers
MICROSATELLITES
POLLO
POULET
RECURSOS GENETICOS
RESSOURCE GENETIQUE
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Summary:Characterization of genetic diversity by employing molecular tools is a prerequisite in developing strategies for conservation and utilization of poultry genetic resources. We assessed genetic variation within and between six Indian chicken populations (Naked Neck, White Silkies, Commercial Layer and Broiler, Giriraja and Desi) using nine microsatellite markers. Seven loci were polymorphic in all populations, with the number of alleles varying from 3 to 27 per locus and 4.1 to 8.6 per population. Average heterozygosity and gene diversity in the populations were 0.68 and 0.66, respectively. Some populations and loci deviated from Hardy-Weinberg equilibrium. Except Naked Neck, none of other populations was in genotypic disequilibrium for a single pairwise locus combination. F-statistics indicated that populations are genetically structured, -85% of the total genetic variation being due to genetic differentiation within the populations. Estimates of Latter's Fsub(ST) and Nei's Dsub(S) genetic distances revealed relatively close genetic similarity between Naked Neck and Giriraja, while White Silkies was the most distant. An estimated divergence time between Naked Neck and Giriraja was over100 years, with a comparatively longer (over 450 years) period of separation between Giriraja and White Silkies. We suggest that there is an essential room left for genetic improvement of Indian native breeds and commercial stocks.
Bibliography:2008001906
L10
ISSN:1346-7395
1349-0486
DOI:10.2141/jpsa.44.19