Sheep diversity of five Egyptian breeds: Genetic proximity revealed between desert breeds

Othman, Othman El Mahdy; Payet-Duprat, Nathalie; Harkat, Sahraoui; Laoun, Abbas; Maftah, Abderrahman; Lafri, Mohamed; Silva, Anne Da

doi:10.1016/j.smallrumres.2016.10.020

Cited by 17 publications

(16 citation statements)

References 39 publications

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“…Mean number of alleles, observed (Ho) and expected (He) heterozygosity values obtained in the present study were higher than those of earlier studies (Ben Sassi-Zaidy et al 2014;Gaouar et al 2014Gaouar et al , 2015bGaouar et al , 2016aGaouar et al , 2016bKdidi et al 2015;Guang-Xin et al 2016;Loukovitis et al 2016;Othman et al 2016). On the other hand, Algerian sheep breeds generally showed a high genetic diversity in comparison with the results obtained by Gaouar et al (2014Gaouar et al ( , 2015b on the same breeds.…”

Section: Discussioncontrasting

confidence: 79%

“…Obtained molecular genetic parameters (Na, Ne, PIC and Hª) obtained from this study were higher than previous research (Farid et al 2000;Arranz et al 2001;Santos-Silva et al 2008;Jyotsana et al 2010;Al-Barzinji et al 2011;Hoda & Marsan 2012;Gaouar et al 2014Gaouar et al , 2015bGaouar et al , 2016aGaouar et al , 2016bYilmaz et al 2014;Kdidi et al 2015;Othman et al 2016). These results indicated that microsatellites used in the present study have a high confidence to reveal genetic diversity for these breeds.…”

Section: Discussioncontrasting

confidence: 74%

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New genetic identification and characterisation of 12 Algerian sheep breeds by microsatellite markers

Ameur

Ata

Benyoucef

et al. 2017

Italian Journal of Animal Science

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Exposition of variations between breeds is very important for genetic diversity. Determination of this variation is needed to reveal population structure and relationship between populations and planning national breeding and conservation programmes. This study was carried out in 296 animals from 12 different local sheep breeds (Barbarine, Ouled Djellal, Ifilene, Srandi, Darâa, Rembi, Berbere, Taâdmit, Hamra, Sidaou, Tazegzawt and D'men) reared in different regions of Algeria. Fifteen microsatellite markers were used to determine between breed genetic diversity. The population of 12 sheep breeds studied from Algeria exhibited a high number of alleles (24.67) and polymorphic information content (0.90). Observed heterozygosity values were lower than expected for all molecular markers except INRA0123 locus. Obtained G ST value from the present study indicated that 1.9% of total genetic variation resulted from the differences between the breeds. The present study supplied important information to understand between breed genetic differences. Moreover, it has provided the opportunity to discuss with previously reported results. In light of these findings, it can be said that studied microsatellite markers can be successfully used to determine genetic diversity and population structure in Algerian sheep breeds. ARTICLE HISTORY

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Section: Discussioncontrasting

confidence: 79%

Section: Discussioncontrasting

confidence: 74%

New genetic identification and characterisation of 12 Algerian sheep breeds by microsatellite markers

Ameur

Ata

Benyoucef

et al. 2017

Italian Journal of Animal Science

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“…All dromedaries camels reared in Egypt, Iran, Germany and the UK are closely related to each other especially the Egyptian and Iranian camels which showed the complete similarity in PRP sequences. This finding supports the fact that the domestication of livestock including sheep, goat and camel began since around 8000 years in the Fertile Crescent and enter Egypt via Isthmus Suez and Sinai (Othman et al 2016). The hypothesis of PRP sequence conservation between closely related species was declared from this Neighbour joining tree where for example the PRP sequences of sheep (Ovis aries) and goat (Capra hircus) are highly conserved.…”

Section: Resultssupporting

confidence: 77%

Nucleotide structure of prion protein gene in Egyptian camels

Abdel-Aziem

El-Kader

Alam

et al. 2019

Journal of Applied Animal Research

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The prion protein is coded by the PRP gene which is active in the brain and several other tissues. The functions of normal PrPs are related to energy production, protein degradation and DNA replication. Prions are the essential factor for the transmissible spongiform encephalopathies (TSEs) in different mammalian species. The present study aimed to identify the nucleotide characterization of the PRP gene in six camel breeds reared in Egypt. Genomic DNA which was extracted from 80 camels belonging to six breeds reared in Egypt was used to amplify fragments at 725-bp using a specific primer for PRP gene. Alignment of Egyptian camel PRP nucleotide sequences with those of other mammalian species declared the similarity 100% between PRP sequences of Egyptian and Iranian camels and 99.7% similarity with English, German and Chinese camel populations. The nucleotide sequence of Egyptian camel was submitted to GenBank under the accession no.: MF685344. The comparison between PRP amino acids of Camelus species with other mammalian species showed two missing amino acids in Camelus and Lama glama species; Glycine at position 83 and Leucine at position 229 whereas there is a unique amino acid addition-Glycine at position 89in Camelus species.

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“…All the details concerning conditions of PCR amplification are available in Othman et al. (). The amplified PCR products were loaded on an ABI 3730 Genetic Analyzer using LIZ‐600 as internal size standard (Applied Biosystems).…”

Section: Methodsmentioning

confidence: 99%

Assessing patterns of genetic admixture between sheep breeds: Case study in Algeria

Harkat

Laoun

Belabdi

et al. 2017

Ecology and Evolution

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In developing countries, cross‐breeding between local breeds and indigene or exotic breeds represents one of the main threats to the livestock diversity, leading to genetic dilution and loss of unique allelic combination underlying essential local adaptive traits. In this study, two Algerian sheep breeds, known to be highly admixed, were considered as a case study, to demonstrate how combination of different methodologies coupled with the use of specific softwares can be efficient to assess the spatial structuration of a hybrid zone, even in a case of extreme admixture. A fine sampling covering distribution areas of both breeds was implemented in order to study the admixture area and adjacent zones from a phenotypic (i.e., 19 quantitative traits were considered) and a genetic point of view (i.e., 21 microsatellites markers were used). Both approaches gave concordant patterns, highlighting areas with sheep most differentiated (or less admixed) for each breed. In detail, the region of Biskra appeared as the most preserved for the Ouled‐Djellal breed and the northwest of Laghouat was identified as the most preserved area for the Rembi breed. The approach proposed in the study offers a low‐cost solution to identify the most representative flocks of a breed, allowing the implementation of efficient conservation plans.

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Sheep diversity of five Egyptian breeds: Genetic proximity revealed between desert breeds

Cited by 17 publications

References 39 publications

New genetic identification and characterisation of 12 Algerian sheep breeds by microsatellite markers

New genetic identification and characterisation of 12 Algerian sheep breeds by microsatellite markers

Nucleotide structure of prion protein gene in Egyptian camels

Assessing patterns of genetic admixture between sheep breeds: Case study in Algeria

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