Bouhali Abdelbaki, Homrani Abdelkader, Ferrand Nuno, Lopes Susana, Emam Ahmed Mostafa
Laboratory of Sciences and Technics for Animal Production (LSTAP), Department of Agronomic Sciences, Faculty of Nature Sciences and Life, Abdelhamid Ibn Badis Mostaganem University, Mostaganem, Algeria.
École Normale Supérieur Taleb abderrahmane Laghouat, Laghouat, 4033, Algeria.
Arch Anim Breed. 2023 Jul 27;66(3):207-215. doi: 10.5194/aab-66-207-2023. eCollection 2023.
Having higher adaptability against abiotic stress, which is characterized in rural areas in developing countries, local farm animal genetic resources (FAGRs) are increasingly precarious for random and unsystematic crossing with exotic breeds. In this study, 85 microsatellite loci were utilized to assess genetic diversity among native Algerian rabbits (NARs) sampled from an area of 753 km (from north to south) and 919 km (from east to west). Those distances covered 25 significant geographical points in seven rural areas (El Taref, Mostaganem, Sidi Bel Abbès, M'Sila, Dar Chioukh, Faidh El Botma, and Laghouat). A total of 558 alleles were observed in this study. The highest genetic diversity was registered in the southern direction among NAR populations. The mean number of alleles per locus (MNa) and the inbreeding coefficient () were highest in Laghouat (4.482 and 0.232), while they were lowest in El Taref (4.000 and 0.149). In the current study, the number of private alleles (Pa) ranged from 9 to 23. In addition, the average of observed heterozygosity (0.427) was lower than the expected value (0.524) due to high levels of inbreeding. The discriminant analysis of principal components (DAPC), the neighbor-joining tree (NJ), and the analysis of STRUCTURE software confirmed the classification of populations according to geographical zones into four main groups (east, west, south, and middle). The results of the current study are useful for breeding improvement and conservation plan research in relation to local animal genetic resources in Algeria.
由于具有较高的抗非生物胁迫能力，这是发展中国家农村地区的特点，当地农场动物遗传资源（FAGRs）因与外来品种进行随机和无系统的杂交而日益岌岌可危。在本研究中，利用85个微卫星位点评估了从一个面积为753公里（从北到南）和919公里（从东到西）的区域采集的阿尔及利亚本土兔（NARs）的遗传多样性。这些距离覆盖了七个农村地区（埃尔塔里夫、莫斯塔加内姆、西迪贝勒阿巴斯、姆西拉、达尔乔克、法伊德埃尔博特马和拉格瓦特）的25个重要地理点。本研究共观察到558个等位基因。NAR种群在南部方向的遗传多样性最高。每个位点的平均等位基因数（MNa）和近交系数（）在拉格瓦特最高（4.482和0.232），而在埃尔塔里夫最低（4.000和0.149）。在本研究中，私有等位基因（Pa）的数量在9到23之间。此外，由于近亲繁殖水平较高，观察到的杂合度平均值（0.427）低于预期值（0.524）。主成分判别分析（DAPC）、邻接树（NJ）和STRUCTURE软件分析证实，根据地理区域，种群可分为四个主要组（东部、西部、南部和中部）。本研究结果有助于阿尔及利亚当地动物遗传资源的育种改良和保护计划研究。
