Genetic variation within and relationships among populations of Asian goats (<i>Capra hircus</i>)

Barker,; Tan, Soon Guan; Moore, S. S.; Mukherjee,; Matheson,; Selvaraj,

doi:10.1046/j.1439-0388.2001.00296.x

Cited by 115 publications

(103 citation statements)

References 58 publications

(62 reference statements)

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“…On the other hand, it is notable that alleles of extreme size in all populations and loci occur at very low frequencies. Similar observations were reported for Asian (Barker et al, 2001) and Swiss (Glowatzki-Mullis et al, 2008) (Visser et al, 2004;Takahashi et al, 2008;Serrano et al, 2009;Garrine et al, 2010). In a previous study of 14 microsatellite markers genotyped in Ardi goats, the expected heterozygozity was 0.675 (Aljumaah et al, 2012).…”

Section: Genetic Variation Within Breedssupporting

confidence: 81%

Genetic relatedness between Ardi, Black Bedouin and Damascus goat breeds

Al-Atiyat¹,

Aljumaah²

2014

Genet. Mol. Res.

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ABSTRACT.The present study aimed to analyze genetic relatedness and differentiation of common native goat populations in some countries of the Middle East. The populations were Ardi, Black Bedouin, and Damascus goats in the Kingdom of Saudi Arabia, Jordan, and Syria, respectively. Domesticated goats of the Middle East are mostly related to common ancestors, but there is limited molecular genetic evidence. Four microsatellite DNA markers were genotyped in 89 individuals of the three populations using an automated genetic analyzer. Ardi, Black Bedouin, and Damascus goats exhibited high average allele number and expected heterozygosity of 8.25, 9, and 7.25, and 0.750, 0.804, and 0.779, respectively. F-statistics for population differentiation showed 6.0% of total genetic variation, whereas 94.0% as differentiation between individuals within all populations. The least varied within populations was Ardi goats, then Damascus goats and finally Black Bedouin goats. Furthermore, the Damascus goat population was more differentiated from Black Bedouin goats than from Ardi goats. On the other hand, there was strong evidence of admixture between the majority of Ardi and Black Bedouin goat individuals but little with those of Damascus Goat genetic relatedness and phylogeny goats. Genetic distance between Ardi and Black Bedouin goats was the shortest, whereas it was the longest between Ardi and Damascus goats. The phylogenetic tree clearly revealed the expected degree of differentiation in the three populations. From a genetic conservation point of view, it is recommended to maintain the biodiversity of these distinct populations in case genetic migration of genetic resources and genetic conservation are absent.

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Section: Genetic Variation Within Breedssupporting

confidence: 81%

Genetic relatedness between Ardi, Black Bedouin and Damascus goat breeds

Al-Atiyat¹,

Aljumaah²

2014

Genet. Mol. Res.

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“…Deviations from HWE at microsatellite loci have been reported in various studies (Barker et al, 2001;Laval et al, 2000;Luikart et al, 1999) and indicate departure from random mating. This deviation might be the result of the presence of null or non-amplified alleles, allele grouping defects, a sampling structure effect, selection against heterozygotes or inbreeding.…”

Section: Discussionmentioning

confidence: 83%

Genetic diversity between herds of Alpine and Saanen dairy goats and the naturalized Brazilian Moxotó breed

et al. 2006

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Brazilian naturalized goat breeds are adapted to the semiarid conditions prevalent in the Northeast region of the country (which has the largest Brazilian goat heard) and represent an as yet uninvestigated source of genetic diversity. Currently, imported goat breeds are crossed with Brazilian naturalized goat breeds, endangering the genetic potential of the naturalized breeds. We used 11 microsatellite markers to determine the genetic diversity among imported (non-naturalized) dairy Alpine and Saanen goats and naturalized Brazilian Moxotó goats. We genotyped 292 goats from three herds (one private, one from the University of Minas Gerais and the Moxotó conservation herd from Embrapa Caprinos) and found that the general heterozygosity was 0.6952 for Alpine, 0.7043 for Saanen and 0.4984 for Moxotó goats. The number of alleles ranged from 5 (INRA005) to 11 (BM3205), with an average of 7 alleles per locus in the imported breeds and 3.5 alleles per locus in the Moxotó breed. Mean differentiation between populations was higher for herds (F ST S = 0.0768) than for breeds (F ST P = 0.0263), indicating similarity between the imported breeds and the existence of crosses between them. Nei's genetic distance was highest between the Moxotó breed and the imported breeds. These indicate that further studies using these molecular markers would be fruitful.

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“…Deviations from HWE at microsatellites loci have been reported in various studies and indicate departure from random mating (Luikart et al;Laval et al, 2000;Barker et al, 2001). This deviation might be the result of inbreeding, but could also have been caused by the presence of null or non-amplified alleles, allele grouping defects, a sampling structure effect or selection against heterozygotes.…”

Section: Discussionmentioning

confidence: 93%

Structure and genetic relationships between Brazilian naturalized and exotic purebred goat domestic goat (Capra hircus) breeds based on microsatellites

et al. 2007

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The genetic relationships and structure of fourteen goat (Capra hircus) populations were estimated based on genotyping data from 14 goat populations (n = 410 goats) at 13 microsatellite loci. We used analysis of molecular variance (AMOVA), principal component analysis (PCA) and F statistics (F IS , F IT and F ST ) to evaluate the genetic diversity (Ho, He and ad) of the goats. Genetic distances between the 14 goat populations were calculated from allelic frequency data for the 13 microsatellite markers. Moderate differentiation was observed for the populations of the undefined breeds (including the Anglo-Nubian-M breed), the naturalized Brazilian breeds (Moxotó, Canindé), the exotic purebred breeds (Alpine, Saanen, Toggenbourg and Anglo-Nubian) and the naturalized Brazilian Graúna group. Our AMOVA showed that a major portion (88.51%) of the total genetic variation resulted from differences between individual goats within populations, while between-populations variation accounted for the remaining 11.49% of genetic variation. We used a Reynolds genetic distance matrix and PCA to produce a phenogram based on the 14 goat populations and found three clusters, or groups, consisting of the goats belonging to the undefined breed, the naturalized breeds and the exotic purebred breeds. The closer proximity of the Canindé breed from the Brazilian state of Paraíba to the Graúna breed from the same state than to the genetically conserved Canindé breed from the Brazilian state of Ceará, as well as the heterozygosity values and significant deviations from Hardy-Weinberg equilibrium suggests that there was a high number of homozygotes in the populations studied, and indicates the importance of the State for the conservation of the local breeds. Cataloguing the genetic profile of Brazilian goat populations provides essential information for conservation and genetic improvements programs.

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Genetic variation within and relationships among populations of Asian goats (Capra hircus)

Cited by 115 publications

References 58 publications

Genetic relatedness between Ardi, Black Bedouin and Damascus goat breeds

Genetic relatedness between Ardi, Black Bedouin and Damascus goat breeds

Genetic diversity between herds of Alpine and Saanen dairy goats and the naturalized Brazilian Moxotó breed

Structure and genetic relationships between Brazilian naturalized and exotic purebred goat domestic goat (Capra hircus) breeds based on microsatellites

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