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Mol Biol Rep. 2012 Aug;39(8):8217-23. doi: 10.1007/s11033-012-1669-x. Epub 2012 May 4.

Power of exclusion of 19 microsatellite markers for parentage testing in river buffalo (Bubalus bubalis).

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1
National Bureau of Animal Genetic Resources, P. O. Box 129, GT Road Bypass, Karnal, 132001 Haryana, India. kathirvet@yahoo.co.in

Abstract

In the present study, 19 microsatellite markers were assessed for their power of exclusion to test parentage in river buffalo. Microsatellite genotypes of 216 unrelated buffaloes belonging to five different breeds were utilized for the study. The probabilities of exclusion were calculated for three hypothetical situations viz. paternity testing (PE1), one parental genotype unavailable (PE2) and exclusion of both parents i.e. substituted offspring (PE3). The mean probability of exclusion across 19 investigated markers in buffalo was 0.578 (PE1), 0.405 (PE2) and 0.764 (PE3) respectively. The probability of exclusion for paternity (PE1) ranged between 0.297 and 0.814 across different markers. The exclusion probability for the cases one parent unavailable (PE2) and substituted offspring (PE3) varied from 0.143 to 0.688 and 0.465 to 0.946 respectively. Polymorphism information content and expected heterozygosity were found to have significantly high correlation with probability of exclusion of microsatellite markers. The cumulative PE1 of nine marker loci was estimated to be 0.9999 while in case of absence of one of the parental genotypes, a minimum of 11 markers were required to achieve a cumulative PE2 of 0.999. In conclusion, the present study proposes two multiplex sets with four and five markers respectively for routine parentage testing in buffalo and an additional set of four markers for doubtful cases of paternity.

PMID:
22555978
DOI:
10.1007/s11033-012-1669-x
[Indexed for MEDLINE]
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