Search results for "local cattle breeds"

showing 3 items of 3 documents

Genomic inbreeding estimation in small populations: evaluation of runs of homozygosity in three local dairy cattle breeds

2016

In the local breeds with small population size, one of the most important problems is the increase of inbreeding coefficient (F). High levels of inbreeding lead to reduced genetic diversity and inbreeding depression. The availability of high-density single nucleotide polymorphism (SNP) arrays has facilitated the quantification of F by genomic markers in farm animals. Runs of homozygosity (ROH) are contiguous lengths of homozygous genotypes and represent an estimate of the degree of autozygosity at genome-wide level. The current study aims to quantify the genomic F derived from ROH (F-ROH) in three local dairy cattle breeds. F-ROH values were compared with F estimated from the genomic relati…

0301 basic medicineSingle-nucleotide polymorphismRuns of HomozygosityBiologyPolymorphism Single NucleotideSF1-1100local cattle breedSettore AGR/17 - Zootecnica Generale E Miglioramento Genetico03 medical and health sciencesAnimal sciencegenomic inbreeding; local cattle breeds; runs of homozygosity; Animal Science and ZoologyGenetic variationInbreeding depressionAnimalsInbreedinglocal cattle breedsDairy cattleGeneticsGenetic diversityruns of homozygositygenomic inbreedingHomozygote0402 animal and dairy scienceGenetic Variation04 agricultural and veterinary sciences040201 dairy & animal scienceBreedAnimal culture030104 developmental biologyItalyCattleFemaleAnimal Science and ZoologyInbreedingAnimal
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Genome-Wide Analysis Reveals Selection Signatures Involved in Meat Traits and Local Adaptation in Semi-Feral Maremmana Cattle

2021

The Maremmana cattle is an ancient Podolian-derived Italian breed raised in semi-wild conditions with distinctive morphological and adaptive traits. The aim of this study was to detect potential selection signatures in Maremmana using medium-density single nucleotide polymorphism array. Putative selection signatures were investigated combining three statistical approaches designed to quantify the excess of haplotype homozygosity either within (integrated haplotype score, iHS) or among pairs of populations (Rsb and XP-EHH), and contrasting the Maremmana with a single reference population composed of a pool of seven Podolian-derived Italian breeds. Overall, the three haplotype-based analyses …

0301 basic medicineCandidate geneMaremmanaQH426-470selection signaturesdiversitySettore AGR/17 - Zootecnica Generale E Miglioramento Genetico03 medical and health sciencesGeneticslocal cattle breedsenvironmental adaptationGeneGenetics (clinical)Selection (genetic algorithm)Original ResearchLocal adaptation2. Zero hungerbiology[SDV.BA]Life Sciences [q-bio]/Animal biologyHaplotype0402 animal and dairy science04 agricultural and veterinary sciencescandidate genes; diversity; environmental adaptation; local cattle breeds; selection signaturesbiology.organism_classification040201 dairy & animal science3. Good healthlocal cattle breeds selection signatures diversity candidate genes environmental adaptation030104 developmental biologyEvolutionary biologyMolecular MedicineAdaptationcandidate genes diversity environmental adaptation local cattle breeds selection signaturescandidate genesFunction (biology)
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BOVITA: a first overview on genome-wide genetic diversity of Italian autochthonous cattle breeds

2017

Analysis of genomic data is increasingly becoming part of the livestock industry and is an invaluable resource for effective management of breeding programs in small populations. The recent availability of genome-wide SNP panels allows providing background information concerning genome structure in domestic animals, opening new perspectives to livestock genetics. BOVITA was established to join local efforts and resources for the genomic characterization of Italian local cattle breeds. Despite the growing diffusion of some cosmopolite specialized breeds, several autochthonous breeds are still bred in Italy. The main aim of the BOVITA is to investigate the genomic structure of Italian local c…

Settore AGR/17 - Zootecnica Generale E Miglioramento GeneticoSNPs genetic diversity local cattle breeds
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