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SSR and ISSR markers in assessing genetic diversity in Gallus gallus domesticus: a quantitative analysis of scientific production

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EnglishPoultry meat is a major source of animal protein in the world. Research indicates a high inbreeding rate derived from a relative absence of heterozygous subpopulations of chicken from different… Click to show full abstract

EnglishPoultry meat is a major source of animal protein in the world. Research indicates a high inbreeding rate derived from a relative absence of heterozygous subpopulations of chicken from different suppliers. Molecular markers can provide information for the genetic basis of chicken consumed in rural areas and help establishing a chicken database for product quality and warranty. The bibliometric research, comprises between 1994 and 2018, from five previously selected databases: Google Scholar, PubMed, ScienceDirect, Scopus and Web of Science, using the following descriptors: ‘microsatellites’, ‘SSR’, ‘ISSR’, ‘genetic variability’ and ‘genetic diversity’, all of them coupled to ‘chicken’ and/or ‘birds’ results in 66 scientific publications. The publications were then categorized according to their titles to the use of ISSR or SSR markers. They were also addressed by countries according first author cited. The publications data appointed that countries with the height production of poultry meat and hens are the most interested in the genetic diversity study of these species. The SSR markers, due to its more specific characteristic, are more frequently applied to genetic diversity assignment, compared to ISSR. portuguesA carne de frango e uma das principais fontes de proteina animal do mundo. Pesquisas indicam uma alta taxa de endogamia derivada de uma relativa ausencia de subpopulacoes heterozigotas de frango de diferentes fornecedores. Marcadores moleculares podem fornecer informacoes para a base genetica de frango consumido em areas rurais, e ajudar a estabelecer um banco de dados de frango para qualidade e garantia do produto. A pesquisa bibliometrica compreende entre 1994 e 2018, a partir de cinco bancos de dados selecionados anteriormente: Google Scholar, PubMed, ScienceDirect, Scopus e Web of Science, usando os seguintes descritores: ‘microssatelites’, ‘SSR’, ‘ISSR’, ‘variabilidade genetica’ e ‘diversidade genetica’, todos eles associados a resultados de ‘galinha’ e / ou ‘aves’ o que resultou em 66 publicacoes cientificas. As publicacoes foram entao categorizadas de acordo com seus titulos para o uso de marcadores ISSR ou SSR. Eles tambem foram abordados pelos paises, segundo o primeiro autor citado. Os dados das publicacoes obtidas apontam que os paises com grande producao de carnes de frangos sao os mais interessados no estudo da diversidade genetica dessas especies. Os marcadores SSR, devido a sua caracteristica mais especifica, sao frequentemente aplicados a atribuicao de diversidade genetica, em comparacao com o ISSR.

Keywords: ssr issr; production; genetica; diversity; genetic diversity

Journal Title: Ciencia Rural
Year Published: 2020

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