Genetic characterization of the autochthonous sheep populations from Chiapas, Mexico

Quiróz, J.; Martínez-Martínez, A.; Zaragoza, Lourdes; Pérezgrovas, R.; Vega-Pla, J.L.; Delgado, Juan Vicente

doi:10.1016/j.livsci.2007.09.022

Cited by 16 publications

(20 citation statements)

References 24 publications

(19 reference statements)

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“…However, in these reports the analysis was done on 6% denaturing PAGE followed by silver staining, hence direct comparisons cannot be made. The overall level of microsatellite loci variation observed in this study is within the range observed for other exotic sheep breeds (Baumung et al, 2006;Peter et al, 2007;Legaz et al, 2008;Quiroz et al, 2008;Santos-Silva et al, 2008;Alvarez et al, 2009). Sonadi sheep showed the least allele as well as gene diversity.…”

Section: Discussionsupporting

confidence: 86%

Current genetic profile of sheep breeds/populations from Northwestern semi arid zone of India

et al. 2011

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Section: Discussionsupporting

confidence: 86%

Current genetic profile of sheep breeds/populations from Northwestern semi arid zone of India

et al. 2011

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“…However, in these reports, the analysis was done on 6% denaturing PAGE followed by silver staining, hence direct comparisons cannot be made. The overall level of microsatellite loci variation observed in this study is within the range observed for other exotic sheep breeds (Baumung et al 2006;Peter et al 2007;Legaz et al 2008;Quiroz et al 2008;Santos-Silva et al 2008;Alvarez et al 2009). The highest and lowest allele as well as gene diversity was exhibited by Nellore and Garole sheep, respectively.…”

Section: Discussionsupporting

confidence: 83%

Diversity analysis of sheep breeds from Southern peninsular and Eastern regions of India

Arora

Bhatia

Mishra

et al. 2010

Trop Anim Health Prod

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Information is presented on the genetic diversity and relationship among six Indian sheep breeds/populations belonging to the Southern peninsular and Eastern agroecological zones, based on microsatellite markers. Parameters of genetic variation, viz., allele diversity, observed heterozygosity, gene diversity and population inbreeding estimates, were calculated for the six breeds. The allele diversity ranged from 6.40 to 7.92, whereas the gene diversity varied from 0.617 to 0.727. The highest allele and gene diversity was observed for Nellore sheep, while the lowest was exhibited by Garole breed. Within population inbreeding estimate (F(IS)) revealed a significant deficit of heterozygotes in Deccani, Madgyal, Nellore and Garole, whereas Ganjam and Chhotanagpuri sheep showed an excess of heterozygotes. The contribution of each breed to the total diversity of the breeds was quantified by the Weitzman approach. The marginal loss of diversity incurred with removal of Nellore and Garole breeds was higher (>27%), whereas removal of Deccani breed resulted in lowest loss of diversity (3.84%) from the set. Estimation of the genetic differentiation (F(ST)) and genetic distance (D(A)) between the pairs of breeds revealed a close relationship between Deccani and Madgyal sheep (F(ST) = 0.017; D(A) = 0.080) and greatest demarcation between Madgyal and Garole breeds (F(ST) = 0.110; D(A) = 0.622). The information generated would help in shaping genetic management and conservation programs for the sheep breeds under consideration.

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“…The present study has 19, 11, and 20 microsatellite markers common to those used by Sodhi et al (2006), Mukesh et al (2006) and Arora and Bhatia (2006), respectively. The intrabreed genetic variability observed here is comparable to that reported previously for exotic sheep (Baumung et al 2006;Peter et al 2007;Legaz et al 2008;Santos-Silva et al 2008;Quiroz et al 2008;Alvarez et al 2009).…”

Section: Discussionsupporting

confidence: 91%

“…The global F ST estimate revealed a 6.1% genetic differentiation prevailing between sheep breeds of the arid region. The observed results are comparable to the genetic differentiation among Spanish (Alvarez et al 2004), European and Middle Eastern (Peter et al 2007), Alpine (Dalvit et al 2008), and West Balkan Pramenka (Cinkulov et al 2008) sheep but lower than that of Baltic (Tapio et al 2005), Austrian (Baumung et al 2006) and Chiapas (Quiroz et al 2008) sheep. This low level of differentiation among the sheep of the arid region could be due to continuous intermixing and crossbreeding during migration, to improve production traits.…”

Section: Discussionsupporting

confidence: 74%

Genetic Variation and Relationship of Six Indian Sheep Breeds Adapted to the Northwestern Arid Zone of Rajasthan

2011

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This study illustrates the genetic diversity and relationships within and among six Indian sheep breeds of the northwestern arid region of Rajasthan, based on microsatellite markers. The range of allele diversity was 7.72-9.56, and gene diversity was 0.686-0.766, revealing that these breeds possessed substantial amounts of genetic diversity. Positive F (IS) values suggested a deficit of heterozygotes in all six breeds. Despite the declining status of the Marwari, Chokla, Jaisalmeri, Magra and Pugal breeds, an absence of a recent genetic bottleneck was evident from the data. The genetic differentiation estimate (F (ST) = 6.1%) suggested low levels of differentiation between the breeds. Genetic distance estimates revealed a close relationship between the Magra-Pugal and Nali-Jaisalmeri breed pairs. This information forms a framework for designing genetic management and conservation programs for these valuable ovine breeds.

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Genetic characterization of the autochthonous sheep populations from Chiapas, Mexico

Cited by 16 publications

References 24 publications

Current genetic profile of sheep breeds/populations from Northwestern semi arid zone of India

Current genetic profile of sheep breeds/populations from Northwestern semi arid zone of India

Diversity analysis of sheep breeds from Southern peninsular and Eastern regions of India

Genetic Variation and Relationship of Six Indian Sheep Breeds Adapted to the Northwestern Arid Zone of Rajasthan

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