scholarly journals How to better conserve with genetic data: origin and population structure of Brazilian locally adapted hair sheep (Ovis aries) breeds

2019 ◽  
Author(s):  
Tiago do Prado Paim ◽  
Samuel Rezende Paiva ◽  
Natália Martins de Toledo ◽  
Michel Beleza Yamaghishi ◽  
Paulo Luiz Souza Carneiro ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Genetic Resources ◽  
Strong Relationship ◽  
Ovis Aries ◽  
East African ◽  
Hair Sheep ◽  
Sheep Breeds ◽  
Fat Tail ◽  
Santa Inês

AbstractBrazilian hair sheep constitute a genetic diversity hotspot of sheep breeds. These locally adapted genetic resources developed in harsh environments of the Brazilian Northwest (semi-arid) and maintained important traits for this region, such as parasite resistance, heat tolerance and high pelt quality. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (5 hair and 2 coarse wool types) and 87 worldwide breeds were used to verify population structure, admixture and genetic diversity, using PCA and ADMIXTURE analyses. We constructed a phylogenetic tree and evaluated migration events between genetic groups using TREEMIX software. Brazilian Somali, a fat-tailed breed, was the unique breed with high relationship with East African breeds and formed a distinct cluster from other Brazilian breeds. This breed seems to contribute to formation of Santa Inês, Morada Nova and Brazilian Fat-tail breeds. Brazilian Blackbelly had a clear relationship with Barbados Blackbelly, which appeared as another group. Other Brazilian breeds seem to form a further genetic group with some recent admixtures. Morada Nova remained as a separate group, not showing a strong relationship with European or African breeds, only revealing a migration event from Sidaoun, an Algerian hair breed. Brazilian Fat-tail and Morada Nova share a common ancestor, but the first received introgressions from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. Santa Inês received strong contribution from Bergamasca and had an admixed origin with recent introgressions from other breeds, mainly from Suffolk animals. In conclusion, Brazilian Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil.

scholarly journals Genomic Diversity, Population Structure, and Signature of Selection in Five Chinese Native Sheep Breeds Adapted to Extreme Environments

Genes ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 494
Author(s):  
Adam Abied ◽  
Alnoor Bagadi ◽  
Farhad Bordbar ◽  
Yabin Pu ◽  
Serafino M.A. Augustino ◽  
...  
Keyword(s):  
Population Structure ◽  
Genetic Resources ◽  
Coat Color ◽  
Ovis Aries ◽  
Genomic Diversity ◽  
Phenotypic Traits ◽  
Domestic Sheep ◽  
Diverse Range ◽  
Sheep Breeds ◽  
Native Sheep

Through long term natural and artificial selection, domestic sheep (Ovis aries) have become adapted to a diverse range of agro-ecological environments and display multiple phenotypic traits. Characterization of diversity and selection signature is essential for genetic improvement, understanding of environmental adaptation, as well as utilization and conservation of sheep genetic resources. Here, we aimed to assess genomic diversity, population structure, and genomic selection among five Chinese native sheep breeds using 600K high density SNP genotypes. A total of 96 animals of the five breeds were selected from different geographical locations with extremely dry or humid conditions. We found a high proportion of informative SNPs, ranging from 93.3% in Yabuyi to 95.5% in Wadi, Hu, and Hetian sheep. The average pairwise population differentiation (FST) between the breeds was 0.048%, ranging from 0.022% to 0.054%, indicating their low to moderate differentiation. PCA, ADMIXTURE, and phylogenetic tree analyses revealed a clustering pattern of the five Chinese sheep breeds according to their geographical distribution, tail type, coat color, body size, and breeding history. The genomic regions under putative selection identified by FST and XP-EHH approaches frequently overlapped across the breeds, and spanned genes associated with adaptation to extremely dry or humid environments, innate and adaptive immune responses, and growth, wool, milk, and reproduction traits. The present study offers novel insight into genomic adaptation to dry and humid climates in sheep among other domestic animals and provides a valuable resource for further investigation. Moreover, it contributes useful information to sustainable utilization and conservation of sheep genetic resources.

scholarly journals Genetic diversity and assessment of 23 microsatellite markers for parentage testing of Santa Inês hair sheep in Brazil

2012 ◽  
Vol 11 (2) ◽  
pp. 1217-1229 ◽  
Author(s):  
C.A. Souza ◽  
S.R. Paiva ◽  
C.M. McManus ◽  
H.C. Azevedo ◽  
A.S. Mariante ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Microsatellite Markers ◽  
Hair Sheep ◽  
Parentage Testing ◽  
Santa Inês

scholarly journals Genetic diversity and population structure of local and exotic sheep breeds in Jordan using microsatellites markers

2018 ◽  
Vol 11 (6) ◽  
pp. 778-781 ◽  
Author(s):  
Khaleel I. Jawasreh ◽  
Mustafa M. Ababneh ◽  
Zuhair Bani Ismail ◽  
Abdel Mon'em Bani Younes ◽  
Ibrahem Al Sukhni
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Sheep Breeds ◽  
Microsatellites Markers

scholarly journals Population Structure and Genetic Diversity of Sheep Breeds in the Kyrgyzstan

2019 ◽  
Vol 10 ◽  
Author(s):  
Tatiana Deniskova ◽  
Arsen Dotsev ◽  
Eugenia Lushihina ◽  
Alexey Shakhin ◽  
Elisabeth Kunz ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Sheep Breeds

Short communication: milk production and lamb development in Saint Croix and Katahdin hair sheep breeds (Ovis aries)

2017 ◽  
Vol 50 (3) ◽  
pp. 683-687 ◽  
Author(s):  
Carlos Burgos-González ◽  
Maricela Huerta-Aparicio ◽  
Virginio Aguirre ◽  
Reyes Vázquez ◽  
Agustín Orihuela ◽  
...  
Keyword(s):  
Milk Production ◽  
Short Communication ◽  
Ovis Aries ◽  
Hair Sheep ◽  
Sheep Breeds ◽  
Saint Croix

scholarly journals Genetic diversity and population structure of sheep (Ovis aries) in Sichuan, China

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257974
Author(s):  
Mingliang Zhou ◽  
Gaofu Wang ◽  
Minghua Chen ◽  
Qian Pang ◽  
Shihai Jiang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Ovis Aries ◽  
Fixation Index ◽  
Nucleotide Polymorphisms ◽  
High Quality ◽  
Genome Wide ◽  
High Quality Snps ◽  
Exotic Breed ◽  
Population Structures

Sichuan, China, has abundant genetic resources of sheep (Ovis aries). However, their genetic diversity and population structure have been less studied, especially at the genome-wide level. In the present study, we employed the specific-locus amplified fragment sequencing for identifying genome-wide single nucleotide polymorphisms (SNPs) among five breeds of sheep distributed in Sichuan, including three local pure breeds, one composite breed, and one exotic breed of White Suffolk. From 494 million clean paired-end reads, we obtained a total of 327,845 high-quality SNPs that were evenly distributed among all 27 chromosomes, with a transition/transversion ratio of 2.56. Based on this SNP panel, we found that the overall nucleotide diversity was 0.2284 for all five breeds, with the highest and lowest diversity observed in Mage sheep (0.2125) and Butuo Black (0.1963) sheep, respectively. Both Wright’s fixation index and Identity-by-State distance revealed that all individuals of Liangshan Semifine-wool, White Suffolk, and Butuo Black sheep were respectively clustered together, and the breeds could be separated from each other, whereas Jialuo and Mage sheep had the closest genetic relationship and could not be distinguished from each other. In conclusion, we provide a reference panel of genome-wide and high-quality SNPs in five sheep breeds in Sichuan, by which their genetic diversity and population structures were investigated.

scholarly journals Polymorphism of CAST gene in five sheep breeds in Bulgaria

2021 ◽  
Vol 262 ◽  
pp. 02026
Author(s):  
Ivona Dimitrova ◽  
Milena Bozhilova-Sakova ◽  
Atanaska Teneva ◽  
Tanya Ivanova ◽  
Ina Stoycheva
Keyword(s):  
Genetic Diversity ◽  
Genotypic Variation ◽  
Ovis Aries ◽  
Heterozygous Genotype ◽  
Breeding Programs ◽  
Candidate Marker ◽  
Sheep Breeds ◽  
Homozygous Genotype ◽  
Pcr Rflp ◽  
Cast Gene

CAST gene is a candidate marker that influences the intensity of growth and meat quality. The aim of this study was to investigate the genetic variability of CAST gene in five Bulgarian sheep breeds – two merino, two local and one for milk. A total of 150 ewes, belonging to these breeds were investigated for polymorphisms of CAST gene by using PCR-RFLP method. A 622 bp fragment of Ovis aries CAST gene was amplified using PCR. After restriction with endonuclease MspI two alleles were observed in Ascanian, Caucasian, Breznik and Pleven Blackhead breeds. One allele (M) and one genotype (MM) were detected in Cooper-Red Shumen breed. The highest frequency of the allele N was established in the Ascanian merino breed (0.27) followed by Caucasian merino (0.13), Breznik (0.12) and Pleven Blackhead (0.07). Two genotypes - MM and MN, were observed in Caucasian, Breznik and Pleven Blackhead breeds. The three possible genotypes were found only in Ascanian merino ewes - MM, MN and NN. The lowest frequency of the homozygous genotype MM (0.50) and the highest frequency of the heterozygous genotype MN was established in the Ascanian merino breed (0.47). The obtained results confirm that the PCR-RFLP method can be used to identify different genotypic variation of CAST gene in Bulgarian sheep breeds. The established genetic diversity in the calpastatin gene indicates that, after further associative studies, this gene may be included in the breeding programs of certain sheep breeds.

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