Comparison of genetic diversity of Turkish and Italian local chicken breeds for further conservation strategies

2016 ◽  
Author(s):  
D. Özdemir ◽  
F. Maretto ◽  
M. Cassandro
Keyword(s):  
Genetic Diversity ◽  
Conservation Strategies ◽  
Chicken Breeds ◽  
Local Chicken

scholarly journals Genome-Wide SNP Analysis Reveals the Population Structure and the Conservation Status of 23 Italian Chicken Breeds

Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1441
Author(s):  
Filippo Cendron ◽  
Francesco Perini ◽  
Salvatore Mastrangelo ◽  
Marco Tolone ◽  
Andrea Criscione ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Conservation Status ◽  
Geographical Area ◽  
Snp Array ◽  
Local Economy ◽  
Conservation Strategies ◽  
Snp Analysis ◽  
Runs Of Homozygosity ◽  
Chicken Breeds

The genomic variability of local Italian chicken breeds, which were monitored under a conservation plan, was studied using single nucleotide polymorphisms (SNPs) to understand their genetic diversity and population structure. A total of 582 samples from 23 local breeds and four commercial stocks were genotyped using the Affymetrix 600 K Chicken SNP Array. In general, the levels of genetic diversity, investigated through different approaches, were lowest in the local chicken breeds compared to those in the commercial stocks. The level of genomic inbreeding, based on runs of homozygosity (FROH), was markedly different among the breeds and ranged from 0.121 (Valdarnese) to 0.607 (Siciliana). In all breeds, short runs of homozygosity (ROH) (<4 Mb in length) were more frequent than long segments. The patterns of genetic differentiation, model-based clustering, and neighbor networks showed that most breeds formed non-overlapping clusters and were clearly separate populations, which indicated the presence of gene flow, especially among breeds that originated from the same geographical area. Four genomic regions were identified as hotspots of autozygosity (islands) among the breeds, where the candidate genes are involved in morphological traits, such as body weight and feed conversion ratio. We conclude that the investigated breeds have conserved authentic genetic patterns, and these results can improve conservation strategies; moreover, the conservation of local breeds may play an important role in the local economy as a source of high-quality products for consumers.

scholarly journals Genetic diversity in some local chicken breeds using microsatellite markers

2007 ◽  
Vol 6 (sup1) ◽  
pp. 225-227 ◽  
Author(s):  
E. Zanetti ◽  
M. Gervaso ◽  
C. Dalvit ◽  
M. Cassandro
Keyword(s):  
Genetic Diversity ◽  
Microsatellite Markers ◽  
Chicken Breeds ◽  
Local Chicken

Assessing genetic diversity of Vietnamese local chicken breeds using microsatellites

2010 ◽  
Vol 41 (5) ◽  
pp. 545-547 ◽  
Author(s):  
N. T. K. Cuc ◽  
H. Simianer ◽  
H. Eding ◽  
H. V. Tieu ◽  
V. C. Cuong ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Chicken Breeds ◽  
Local Chicken

scholarly journals Genetic diversity of local chicken breeds in East China based on mitochondrial DNA D-loop region

2017 ◽  
Vol 25 (5) ◽  
pp. 540-548
Author(s):  
Xiaoxu Jia ◽  
◽  
Xiujun Tang ◽  
Yanfeng Fan ◽  
Junxian Lu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mitochondrial Dna ◽  
East China ◽  
Loop Region ◽  
D Loop ◽  
Chicken Breeds ◽  
Local Chicken

scholarly journals Estimating genetic diversity and population structure of 22 chicken breeds in Asia using microsatellite markers

2020 ◽  
Vol 33 (12) ◽  
pp. 1896-1904
Author(s):  
Hee-Jong Roh ◽  
Seung-Chang Kim ◽  
Chang-Yeon Cho ◽  
Jinwook Lee ◽  
Dayeon Jeon ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Phylogenetic Analysis ◽  
Rhode Island ◽  
Genomic Dna ◽  
Principal Coordinate Analysis ◽  
Conservation Strategies ◽  
White Leghorn ◽  
Asian Countries ◽  
Expected Heterozygosity ◽  
Chicken Breeds

Objective: Estimating the genetic diversity and structures, both within and among chicken breeds, is critical for the identification and conservation of valuable genetic resources. In chickens, microsatellite (MS) marker polymorphisms have previously been widely used to evaluate these distinctions. Our objective was to analyze the genetic diversity and relationships among 22 chicken breeds in Asia based on allelic frequencies.Methods: We used 469 genomic DNA samples from 22 chicken breeds from eight Asian countries (South Korea, KNG, KNB, KNR, KNW, KNY, KNO; Laos, LYO, LCH, LBB, LOU; Indonesia, INK, INS, ING; Vietnam, VTN, VNH; Mongolia, MGN; Kyrgyzstan, KGPS; Nepal, NPS; Sri Lanka, SBC) and three imported breeds (RIR, Rhode Island Red; WLG, White Leghorn; CON, Cornish). Their genetic diversity and phylogenetic relationships were analyzed using 20 MS markers.Results: In total, 193 alleles were observed across all 20 MS markers, and the number of alleles ranged from 3 (MCW0103) to 20 (LEI0192) with a mean of 9.7 overall. The NPS breed had the highest expected heterozygosity (H<sub>exp</sub>, 0.718±0.027) and polymorphism information content (PIC, 0.663±0.030). Additionally, the observed heterozygosity (H<sub>obs</sub>) was highest in LCH (0.690±0.039), whereas WLG showed the lowest H<sub>exp</sub> (0.372±0.055), H<sub>obs</sub> (0.384±0.019), and PIC (0.325±0.049). Nei’s DA genetic distance was the closest between VTN and VNH (0.086), and farthest between KNG and MGN (0.503). Principal coordinate analysis showed similar results to the phylogenetic analysis, and three axes explained 56.2% of the variance (axis 1, 19.17%; 2, 18.92%; 3, 18.11%). STRUCTURE analysis revealed that the 22 chicken breeds should be divided into 20 clusters, based on the highest ΔK value (46.92).Conclusion: This study provides a basis for future genetic variation studies and the development of conservation strategies for 22 chicken breeds in Asia.

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