Genetic characterization of Colombian indigenous sheep

Background: indigenous breeds are important for poor farmers because of their natural selection against harsh environments and adaptation to regional conditions. However, inbreeding of indigenous sheep populations has increased in Colombia due to indiscriminate cross-breeding with foreign animals an...

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Autores principales:	Ricardo J. Ocampo, Rodrigo A. Martínez, Juan F. Rocha, Henry Cardona
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2017
Materias:	conservation dna genetic diversity ovine cattle population structure Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/64340545707c4a45a2f9f2601892f5eb
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spelling	oai:doaj.org-article:64340545707c4a45a2f9f2601892f5eb2021-11-26T19:19:23ZGenetic characterization of Colombian indigenous sheep2256-295810.17533/udea.rccp.v30n2a03https://doaj.org/article/64340545707c4a45a2f9f2601892f5eb2017-04-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/325659https://doaj.org/toc/2256-2958Background: indigenous breeds are important for poor farmers because of their natural selection against harsh environments and adaptation to regional conditions. However, inbreeding of indigenous sheep populations has increased in Colombia due to indiscriminate cross-breeding with foreign animals and lack of reproductive controls, with subsequent loss in productivity, which poses a great risk for the conservation of valuable genes. Objective: to determine the genetic diversity in Colombian indigenous sheep by using a panel of 10 microsatellite molecular markers. Methods: blood samples from 362 individuals from 43 farms in 11 Colombian provinces were genotyped and analyzed for a panel of 10 microsatellite markers. Results: a total of 134 alleles were found (13.4 alleles/locus on average) with a range of observed and expected heterozygosity of 0.428 to 0.831 and 0.615 to 0.855, respectively, and 0.742 polymorphic information content (PIC). The average Wright F-statistics (FIS) of the breeds was 0.107, suggesting moderate levels of inbreeding. Colombian sheep showed a low level of genetic differentiation among breeds (FST = 0.054) and STRUCTURE analysis showed complex patterns of admixture in the breeds. Conclusion: overall, Colombian sheep have high genetic variability, which is very important for future conservation programs and genetic improvement.Ricardo J. OcampoRodrigo A. MartínezJuan F. RochaHenry CardonaUniversidad de Antioquiaarticleconservationdnagenetic diversityovine cattlepopulation structureAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 30, Iss 2, Pp 116-125 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	conservation dna genetic diversity ovine cattle population structure Animal culture SF1-1100
spellingShingle	conservation dna genetic diversity ovine cattle population structure Animal culture SF1-1100 Ricardo J. Ocampo Rodrigo A. Martínez Juan F. Rocha Henry Cardona Genetic characterization of Colombian indigenous sheep
description	Background: indigenous breeds are important for poor farmers because of their natural selection against harsh environments and adaptation to regional conditions. However, inbreeding of indigenous sheep populations has increased in Colombia due to indiscriminate cross-breeding with foreign animals and lack of reproductive controls, with subsequent loss in productivity, which poses a great risk for the conservation of valuable genes. Objective: to determine the genetic diversity in Colombian indigenous sheep by using a panel of 10 microsatellite molecular markers. Methods: blood samples from 362 individuals from 43 farms in 11 Colombian provinces were genotyped and analyzed for a panel of 10 microsatellite markers. Results: a total of 134 alleles were found (13.4 alleles/locus on average) with a range of observed and expected heterozygosity of 0.428 to 0.831 and 0.615 to 0.855, respectively, and 0.742 polymorphic information content (PIC). The average Wright F-statistics (FIS) of the breeds was 0.107, suggesting moderate levels of inbreeding. Colombian sheep showed a low level of genetic differentiation among breeds (FST = 0.054) and STRUCTURE analysis showed complex patterns of admixture in the breeds. Conclusion: overall, Colombian sheep have high genetic variability, which is very important for future conservation programs and genetic improvement.
format	article
author	Ricardo J. Ocampo Rodrigo A. Martínez Juan F. Rocha Henry Cardona
author_facet	Ricardo J. Ocampo Rodrigo A. Martínez Juan F. Rocha Henry Cardona
author_sort	Ricardo J. Ocampo
title	Genetic characterization of Colombian indigenous sheep
title_short	Genetic characterization of Colombian indigenous sheep
title_full	Genetic characterization of Colombian indigenous sheep
title_fullStr	Genetic characterization of Colombian indigenous sheep
title_full_unstemmed	Genetic characterization of Colombian indigenous sheep
title_sort	genetic characterization of colombian indigenous sheep
publisher	Universidad de Antioquia
publishDate	2017
url	https://doaj.org/article/64340545707c4a45a2f9f2601892f5eb
work_keys_str_mv	AT ricardojocampo geneticcharacterizationofcolombianindigenoussheep AT rodrigoamartinez geneticcharacterizationofcolombianindigenoussheep AT juanfrocha geneticcharacterizationofcolombianindigenoussheep AT henrycardona geneticcharacterizationofcolombianindigenoussheep
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Genetic characterization of Colombian indigenous sheep

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