<?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>2304-0106</journal-id>
<journal-title><![CDATA[Anales de la Academia de Ciencias de Cuba]]></journal-title>
<abbrev-journal-title><![CDATA[Anales de la ACC]]></abbrev-journal-title>
<issn>2304-0106</issn>
<publisher>
<publisher-name><![CDATA[Academia de Ciencias de Cuba]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2304-01062021000100008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estrategias de selección para la mejora genética de las razas Siboney de Cuba y Mambí de Cuba]]></article-title>
<article-title xml:lang="en"><![CDATA[Selection strategies for the genetic improvement of the Siboney de Cuba and Mambí de Cuba breeds]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Rodríguez]]></surname>
<given-names><![CDATA[Arelis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ponce de León Sentí]]></surname>
<given-names><![CDATA[Raquel Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Prieto]]></surname>
<given-names><![CDATA[Simón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández Naranjo]]></surname>
<given-names><![CDATA[Alma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prada Gutiérrez]]></surname>
<given-names><![CDATA[Niurka]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Vázquez]]></surname>
<given-names><![CDATA[Ramiro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ciencia Animal (ICA)  ]]></institution>
<addr-line><![CDATA[ Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Empresa Pecuaria Genética Camilo Cienfuegos  ]]></institution>
<addr-line><![CDATA[Consolación del Sur Pinar del Río]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Dirección de Genética (DG)  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2304-01062021000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2304-01062021000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2304-01062021000100008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La evaluación genética de las razas bovinas Siboney de Cuba (5/8 Holstein 3/8 Cebú) y Mambí de Cuba (3/4 Holstein 1/4 Cebú) se realiza considerando la producción lechera mediante un modelo animal unicarácter, para cada raza independientemente. Objetivo: caracterizar los rebaños Siboney de Cuba y Mambí de Cuba, evaluar alternativas de selección combinando varios rasgos, y metodologías para realizar las evaluaciones genéticas con mayor precisión.  Métodos:  Mediante un modelo unicarácter se realizó la evaluación multirracial y en otro la existencia de interacción genotipo ambiente (IGA). Se estimaron las heredabilidades, repetibilidades y valores genéticos (VG) mediante un modelo unicarácter para producción de leche acumulada hasta 305 días (L305), leche total acumulada por vida (LTV), duración de la lactancia (DL), edad al primer parto (EP1), intervalo parto primer servicio (IPS), intervalo parto gestación (IPG), intervalo entre partos (IPP), vida productiva (VP) y el número de partos por vida (NP). Se estimaron las correlaciones genéticas mediante un modelo multicarácter para estos rasgos y se construyeron índices de selección a partir de los VG en 6425 vacas Siboney de Cuba y 5445 Mambí de Cuba, mediante el análisis de componentes principales.  Resultados:  Las heredabilidades y exactitud de los VG fueron superiores en la evaluación multirracial. En conclusión, en el Mambí de Cuba es más eficiente utilizar un índice que considere como criterios de selección L305, DL y LTV; mientras que en el Siboney de Cuba debe incluir LTV, EP1 e IPG.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The genetic evaluation of the Siboney de Cuba (5/8 Holstein 3/8 Zebu) and Mambí de Cuba (3/4 Holstein 1/4 Zebu) bovine breeds is performed considering milk production using a single-character animal model for each breed independently. Objective. It was proposed to characterize the Siboney de Cuba and Mambí de Cuba herds, evaluate selection alternatives combining various traits, and methodologies to carry out genetic evaluations with greater precision.  Methods:  The multiracial evaluation was carried out using a single-character model and the existence of environment genotype interaction (IGA) in another. Heritability, repeatability and genetic values (GV) were estimated using a single-character model for milk production accumulated up to 305 days (L305), total milk accumulated for life (LTV), duration of lactation (DL), age at first calving (EP1), first service calving interval (IPS), gestation calving interval (IPG), calving interval (IPP), productive life (VP) and the number of births per life (NP). Genetic correlations were estimated using a multi-character model for these traits and selection indices were constructed from the GV in 6,425 Siboney cows from Cuba and 5,445 Mambí from Cuba, by means of the analysis of principal components.  Results:  The heritability and accuracy of the VG were higher in the multiracial evaluation. Conclusions: In the case of the Mambí de Cuba, it is more efficient to use an index that considers L305, DL and LTV as selection criteria; while in the Siboney de Cuba it must include LTV, EP1 and IPG.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bovinos lecheros]]></kwd>
<kwd lng="es"><![CDATA[evaluación genética]]></kwd>
<kwd lng="es"><![CDATA[índices de selección]]></kwd>
<kwd lng="es"><![CDATA[análisis de componentes principales]]></kwd>
<kwd lng="en"><![CDATA[dairy cattle]]></kwd>
<kwd lng="en"><![CDATA[genetic evaluation]]></kwd>
<kwd lng="en"><![CDATA[selection index]]></kwd>
<kwd lng="en"><![CDATA[principal component analysis]]></kwd>
</kwd-group>
</article-meta>
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