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Genetic diversity among four short stature cattle populations of India

Published online by Cambridge University Press:  01 August 2011

M.S. Tantia ,
R.K. Vijh ,
B. Mishra  and
S.T. Bharani Kumar
M.S. Tantia
Affiliation:
National Bureau of Animal Genetic Resources, P.O. Box 129, Karnál 132001, India
R.K. Vijh
Affiliation:
National Bureau of Animal Genetic Resources, P.O. Box 129, Karnál 132001, India
B. Mishra
Affiliation:
National Bureau of Animal Genetic Resources, P.O. Box 129, Karnál 132001, India
S.T. Bharani Kumar
Affiliation:
National Bureau of Animal Genetic Resources, P.O. Box 129, Karnál 132001, India
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Summary

The genetic diversity, genetic differentiation and relationship between four short stature cattle populations of south India - Punganur, Iduki, Kasargod and Vatakara - was studied, using 24 microsatellite loci. A total of 164 alleles were observed. The mean number of alleles per locus was 6.58 with mean observed and expected heterozygosity values of 0.70 and 0.75 respectively. The relative magnitude of gene differentiation (FST) was 6% and was significant except between the Iduki and Kasargod populations. The negative FIS values obtained for the majority of loci indicated a lack of population structure in the four populations. Both phylogenetic and correspondence analysis exhibited a closeness between Iduki and Kasargod animals. The results indicated that all four populations were outbred and Kasargod and Iduki animals should be considered as one even though these are reared for different purposes.

Résumé

La diversité génétique, la différence génétique et les relations entre 4 populations bovines de petite taille du Sud des Indes, Punganur, Iduki, Kasargod et Vatakara, ont été étudiés en utilisant 24 loci microsatellites. Un total de 164 allèles ont été observés. Le nombre moyen d'allèles par locus était de 6,58 avec une valeur d'hétérozigosité moyenne observée et espérée de 0,70 et 0,75, respectivement. La grandeur relative du gène de différentiation (FST) était de 6% et était significative sauf entre la population Iduki et la Kasargod. Les valeurs négatives de FIS obtenues pour la majorité des loci indiquent un manque de structure dans les 4 populations. Les analyses de correspondances et phylogénétiques montrent un lien plus étroit entre les animaux Iduki et Kasargod. Les résultats indiquent que les 4 populations étaient hors croisement et les animaux Kasargod et Iduki devraient être considérés comme une seule population, même s'ils sont élevés pour des buts différents.

Resumen

La diversidad genética, la diferencia genética y las relaciones entre 4 poblaciones bovinas de pequeño tamaño des sur de la India, Punganur, Iduki, Kasargod y Vatakara, han sido estudiadas utilizando 24 loci de microsatélites. Un total de 164 alelos han sido observados. El número medio de alelos por locus era de 6,58 con un valor de heterocigosidad media observada y esperada de 0,70 y 0,75, respectivamente. El tamaño relativo del gen de diferenciación (FST) era de 6% y resultaba significativo salvo entre la población Iduki y Kasargod. Los valores negativos de FIS obtenidos para la mayoría de los loci indican una falta de relación estrecha entre los animales Iduki y Kasargod. Los resultados indican que las 4 poblaciones estaban fuera de cruce y que los animales Kasargod y Iduki deberían considerarse como una sola población, a pesar de ser criados con objetivos distintos.

Keywords

Microsatellite genotypingStatistical analysisGenetic diversityPopulationsDendrogram.
Type
Research Articles
Information
Animal Genetic Resources/Resources génétiques animales/Recursos genéticos animales , Volume 43 , April 2008 , pp. 15 - 23
Copyright
Copyright © Food and Agriculture Organization of the United Nations 2008

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