Search results for " signatures of selection"

showing 2 items of 2 documents

Runs of homozygosity in the Italian goat breeds: impact of management practices in low-input systems

2021

Abstract Background Climate and farming systems, several of which are considered as low-input agricultural systems, vary between goat populations from Northern and Southern Italy and have led to different management practices. These processes have impacted genome shaping in terms of inbreeding and regions under selection and resulted in differences between the northern and southern populations. Both inbreeding and signatures of selection can be pinpointed by the analysis of runs of homozygosity (ROH), which provides useful information to assist the management of this species in different rural areas. Results We analyzed the ROH distribution and inbreeding (FROH) in 902 goats from the Italia…

adaptation; body size; climate change; ecological impact; farming system; goat; inbreeding; management practiceClimateecological impactadaptationQH426-470Runs of homozygosityPolymorphism Single NucleotideSF1-1100GeneticsAnimalsfarming systemsInbreedingPolymorphismEcology Evolution Behavior and SystematicsbiodiversityGenomeSettore AGR/17 - ZOOTECNICA GENERALE E MIGLIORAMENTO GENETICOlocal breedsAnimalGoatsROHHomozygoteGeneral MedicineSingle NucleotideAnimal cultureclimate changeAnimals; Genome; Homozygote; Inbreeding; Goats; Polymorphism Single Nucleotidelocal breeds biodiversity SNPs inbreedingGoatfarming systemRuns of homozygosity ROH Goat signatures of selection low-input system Climate farming systemsAnimal Science and Zoologybody sizeGoat signatures of selectionlow-input systemmanagement practiceResearch ArticleSNPs
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Genome-wide mapping of signatures of selection using a high-density array identified candidate genes for growth traits and local adaptation in chicke…

2023

Abstract Background Availability of single nucleotide polymorphism (SNP) genotyping arrays and progress in statistical analyses have allowed the identification of genomic regions and genes under selection in chicken. In this study, SNP data from the 600 K Affymetrix chicken array were used to detect signatures of selection in 23 local Italian chicken populations. The populations were categorized into four groups for comparative analysis based on live weight (heavy vs light) and geographical area (Northern vs Southern Italy). Putative signatures of selection were investigated by combining three extended haplotype homozygosity (EHH) statistical approaches to quantify excess of haplotype homoz…

local breedschickenpoultryadaptabilityadaptationGeneral MedicineSNP array signatures of selection local chickens candidate genesSettore AGR/17 - Zootecnica Generale E Miglioramento GeneticoAnimal Science and Zoologyenvironment genetics poultry adaptabilitygeneticslocal breeds chicken SNPs adaptationenvironmentEcology Evolution Behavior and SystematicsSNPs
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