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              Research 
              
              
(Published online: 
              12-07-2015) 
              
              6.  
              
              Microsatellite DNA typing for assessment of 
              genetic variability in Marwari breed of Indian goat - 
              Anoop Singh Yadav, Kritika Gahlot, Gyan Chand Gahlot, Mohd Asraf 
              and Mohan Lal Yadav 
              
              Veterinary World, 8(7): 848-854   
              
   
                
                
doi: 
              10.14202/vetworld.2015.848-854   Anoop 
              Singh Yadav: 
              Department of Animal Breeding & Genetics, College of Veterinary & 
              Animal Science, Rajasthan University of Veterinary & Animal 
              Science, Bikaner - 334 003, Rajasthan, India; itsdr.anoopvet@gmail.com Kritika 
              Gahlot: 
              Department of Animal Breeding & Genetics, College of Veterinary & 
              Animal Science, Rajasthan University of Veterinary & Animal 
              Science, Bikaner - 334 003, Rajasthan, India; kritikagahlot86@gmail.com Gyan 
              Chand Gahlot: 
              Department of Animal Breeding & Genetics, College of Veterinary & 
              Animal Science, Rajasthan University of Veterinary & Animal 
              Science, Bikaner - 334 003, Rajasthan, India; gahlotgcbkn@rediffmail.com Mohd 
              Asraf: 
              Department of Animal Breeding & Genetics, College of Veterinary & 
              Animal Science, Rajasthan University of Veterinary & Animal 
              Science, Bikaner - 334 003, Rajasthan, India; aicrp@rediffmail.com Mohan 
              Lal Yadav: Department of Animal Breeding & Genetics, College 
              of Veterinary & Animal Science, Rajasthan University of Veterinary 
              & Animal 
              Science, Bikaner - 334 003, Rajasthan, India;
              
              drymohan@gmail.com   Received: 
              13-01-2015, Revised: 06-06-2015, Accepted: 12-06-2015, Published 
              online: 12-07-2015   
              
              
              Corresponding author: 
              
              Gyan Chand Gahlot, e-mail: gahlotgcbkn@rediffmail.com 
 
              Citation:Yadav AS, Gahlot K, 
              Gahlot GC, Asraf M, Yadav ML (2015) Microsatellite DNA typing for 
              assessment of genetic variability in Marwari breed of Indian goat,
              Veterinary World 8(7): 848-854. 
 
              Abstract 
 Aim:
              To estimate existing 
              within-breed genetic variability in Marwari goats under field 
              conditions and the generated data that can be used to determine 
              genetic relationships with other breed of goats. 
              Materials and Methods: A total 
              of 146 blood samples of goats of Marwari breed were randomly 
              collected from genetically unrelated animals from different 
              villages of Bikaner Districts of Rajasthan, India. Genomic DNA was 
              extracted from whole blood using proteinase K-digestion followed 
              by standard phenol–chloroform extraction procedure at room 
              temperature and confirmed through horizontal electrophoresis on 
              0.8% agarose gel containing ethidium bromide. Fifteen caprine 
              microsatellite markers were used to estimate genetic variability 
              among the goats of Marwari breed in terms of allelic and genotype 
              frequencies, heterozygosities and polymorphism information content 
              (PIC) value. 
              Results: A 
              total of 74 alleles were contributed by Marwari goat across all 15 
              microsatellite loci. The number of alleles per locus varied from 
              two (ILSTS-087) to 9 (ILSTS-058) alleles, with a mean of 4.93 
              whereas the effective number of allele varied from 1.35 
              (ILSTS-005) to 3.129 (ILSTS011) with a mean of 2.36. The effective 
              number of allele is lesser than observed number at all the loci. 
              Allelic sizes ranged from 125 bp (ILSTS-028 and ILSTS-033) to 650 
              bp (ILSTS-011 and ILSTS-019). The expected heterozygosity ranged 
              from 0.240 (locus ILSTS-005) to 0.681 (locus ILSTS-011), with an 
              average value of 0.544. The observed heterozygosity (Ho) ranged 
              from 0.1428 (locus ILSTS-087) to 0.9285 (locus ILSTS-034), with an 
              average value of 0.5485 indicates substantial and very good number 
              of heterozygotes, in the population. The highest PIC value 
              (1.1886) was observed at ILSTS-044 locus and least (0.0768) at 
              ILSTS-065 locus for Marwari goat. 
              Conclusion: Microsatellite 
              analysis revealed a high level of polymorphism across studied 
              microsatellite markers and informativeness of the markers for 
              genetic diversity analysis studies in Marwari goats. This high 
              level of polymorphism can be utilized to plan future biodiversity 
              studies to exploit the uniqueness and adaptability of this breed 
              to Western Rajasthan. Most studied microsatellite markers proving 
              to be good candidates for genetic characterization and diversity 
              analysis of this breed of goat. 
              Keywords: 
              allelic frequency, heterozygosity, Marwari goats, microsatellite 
              marker, polymorphism information content. 
 
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