<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-1124</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. pecuarias]]></abbrev-journal-title>
<issn>2007-1124</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11242021000401008</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v12i4.5690</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contribución de los datos genómicos en la definición de la composición racial de bovinos doble propósito]]></article-title>
<article-title xml:lang="en"><![CDATA[Contribution of genomic data in defining the breed composition of dual-purpose cattle]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosero Alpala]]></surname>
<given-names><![CDATA[Jaime Anibal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rangel Garcia]]></surname>
<given-names><![CDATA[Wilson David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Barreto]]></surname>
<given-names><![CDATA[Adonai]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orlando Burgos-Paz]]></surname>
<given-names><![CDATA[William]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria  ]]></institution>
<addr-line><![CDATA[Villavicencio ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria  ]]></institution>
<addr-line><![CDATA[Cundinamarca ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>4</numero>
<fpage>1008</fpage>
<lpage>1024</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242021000401008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242021000401008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242021000401008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La heterosis animal es clave en la obtención de animales más productivos y mejor adaptados al trópico. Sin embargo, el inadecuado manejo genético conlleva a la obtención de mosaicos de razas que incluye la pérdida del potencial productivo del hato. El objetivo de este estudio fue definir la composición racial de bovinos mestizos doble propósito en el piedemonte Llanero departamento del Meta-Colombia. Un total de 126 individuos mestizos (MEZ) de seis hatos fueron evaluados por una aproximación fenotípica (APF) y una genotípica (ARG). Para ARG se incluyeron las razas control asociadas a Bos taurus taurus y Bos taurus indicus, para ello se genotiparon con un chip de GeneSeek GGP-LD de 26K de SNP y se analizaron mediante análisis de componentes principales (PCA) y asignación probabilística bayesiana de ADMIXTURE. Las agrupaciones raciales generadas por APF variaron respecto de ARG. El análisis molecular detectó siete (k= 7) grupos genéticos en la composición racial de los animales de estudio. Las tres razas con mayor participación en la composición racial de los individuos mestizos fueron: Holstein, Gyr, Brahman con 23.4, 21.4, y 21 % respectivamente, mientras que las restantes Blanco Orejinegro, Pardo Suizo, Normando y Jersey no superaron el 13 %. A diferencia de APF, la aproximación ARG permitió de forma efectiva la identificación de la composición racial de bovinos mestizos y suministró información clave en miras de desarrollo de programas de apareamiento que buscan mejorar indicadores productivos, y a su vez propendan por la adaptación de los animales requisito indispensable para los sistemas bovino doble propósito.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Animal heterosis is key in obtaining more productive animals and better adapted to the tropics. However, inadequate genetic management leads to the obtaining of mosaics of breeds that includes the loss of the productive potential of the herd. The objective of this study was to define the breed composition of dual-purpose crossbred cattle in the piedmont plains, department of Meta-Colombia. A total of 126 crossbred (CRO) individuals from six herds were evaluated by a phenotypic (APP) and a genotypic (GBA) approach. For GBA, the control breeds associated with Bos taurus taurus and Bos taurus indicus were included, for this they were genotyped with a GeneSeek GGP-LD chip of 26K of SNP and analyzed by principal component analysis (PCA) and Bayesian probabilistic assignment of ADMIXTURE. The breed groups generated by APP varied with respect to GBA. Molecular analysis detected seven (k=7) genetic groups in the breed composition of the study animals. The three breeds with the highest participation in the breed composition of crossbred individuals were: Holstein, Gyr, Brahman with 23.4, 21.4, and 21 % respectively, while the remaining, Blanco Orejinegro, Brown Swiss, Normande and Jersey did not exceed 13 %. Unlike APP, the GBA approach effectively allowed the identification of the breed composition of crossbred cattle and provided key information for the development of mating programs that seek to improve productive indicators, and in turn tend to the adaptation of animals, an essential requirement for dual-purpose bovine systems.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Genotipado]]></kwd>
<kwd lng="es"><![CDATA[Mestizos]]></kwd>
<kwd lng="es"><![CDATA[Variabilidad]]></kwd>
<kwd lng="es"><![CDATA[Genética]]></kwd>
<kwd lng="en"><![CDATA[Genotyping]]></kwd>
<kwd lng="en"><![CDATA[Crossbred]]></kwd>
<kwd lng="en"><![CDATA[Variability]]></kwd>
<kwd lng="en"><![CDATA[Genetics]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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