<?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>2224-7920</journal-id>
<journal-title><![CDATA[Revista de Producción Animal]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. prod. anim.]]></abbrev-journal-title>
<issn>2224-7920</issn>
<publisher>
<publisher-name><![CDATA[Ediciones Universidad de Camagüey]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-79202019000200034</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Principales indicadores reproductivos y factores ambientales que afectan a vacas de los genotipos Siboney y Mambí de Cuba]]></article-title>
<article-title xml:lang="en"><![CDATA[Main Reproductive Indicators and Environmental Factors Affecting Cow Genotypes Cuban Siboney and Cuban Mambí]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Díaz]]></surname>
<given-names><![CDATA[Juan Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Noval-Artiles]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiñones-Ramos]]></surname>
<given-names><![CDATA[Reinaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Bello]]></surname>
<given-names><![CDATA[Alcides]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Barreto]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas (UCLV) Facultad de Ciencias Agropecuarias Departamento de Medicina Veterinaria y Zootecnia]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas (UCLV) Centro de Investigaciones Agropecuarias (CIAP) ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>31</volume>
<numero>2</numero>
<fpage>34</fpage>
<lpage>43</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-79202019000200034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-79202019000200034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-79202019000200034&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  La heredabilidad de los rasgos relacionados con la producción lechera, reproducción y longevidad fue estudiada ampliamente en la década pasada; sin embargo, los factores ambientales y el manejo inadecuado determinan la eficiencia del comportamiento reproductivo y productivo. Por ello, se evaluaron los principales indicadores reproductivos y factores ambientales que afectan a vacas de los genotipos Siboney y Mambí de Cuba en una empresa genética de la región central de Cuba.  Métodos:  Se procesaron 618 registros individuales, 358 de hembras del genotipo racial Mambí, de seis rebaños y 260 del Siboney de Cuba, de cuatro unidades; entre los años 2007 y 2010. Se determinaron los intervalos parto-primer servicio de inseminación (IPPS), intervalo parto-gestación (IPG) e intervalo parto-parto (IPP). Fueron estimados los efectos de los diferentes factores sobre los indicadores reproductivos utilizando un modelo lineal general.  Resultados:  El factor unidad influyó significativamente (P &lt; 0,05) sobre el IPPS, IPG e IPP para ambos genotipos. El año de parto tuvo un efecto significativo (P &lt; 0,05) sobre el IPPS, IPP e IPG, comportándose con mejores resultados los años 2009 y 2010. El trimestre de parto que mejor se comportó para los indicadores reproductivos evaluados, fue el de julio-agosto-septiembre, influyendo significativamente (P &lt; 0,05) sobre el IPP e IPG, en el Mambí de Cuba; mientras que en el Siboney de Cuba lo hacía sobre el IPPS.  Conclusiones:  Se concluye que los dos genotipos tienen marcado deterioro de los indicadores reproductivos evaluados, influenciados significativamente por la unidad y el año y trimestre de parto.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  The association of trait heritability with milk production, breeding, and longevity, was thoroughly studied in the past decade. However, the efficiency of productive and reproductive performance is determined by the action of environmental factors and inappropriate husbandry. Therefore, the main reproductive indicators and environmental factors affecting cow genotypes Cuban Siboney and Cuban Mambí were evaluated at a genetic breeding company in central Cuba.  Methods:  The individual records of 618 females were processed between 2007 and 2010 (358 Cuban Mambí from six different herds, and 260 Cuban Siboney from four farms). The calving-first insemination service (CFIS) intervals, the calving-gestation (CG) interval, and the calving interval (CI) were determined. The effects of various factors on the reproductive indicators were estimated using a general linear model.  Results:  The farm factor had a significant influence (P&lt;0.05) on CFIS, CG, and CI in both genotypes. Calving years had a significant effect (P &lt; 0.05) on CFIS, CG, and CI, with the best results in 2009 and 2010. The best calving quarter for reproductive indicators was the July-August-September period, with a significant influence (P &lt; 0.05) on CFIS, CG, and CI, in Cuban Mambí, whereas Cuban Siboney influenced CFIS.  Conclusions:  The two genotypes showed a remarkable deterioration of the reproductive indicators evaluated, particularly influenced by farm, and calving year and quarter.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bovinos lecheros]]></kwd>
<kwd lng="es"><![CDATA[comportamiento reproductivo]]></kwd>
<kwd lng="es"><![CDATA[anestro]]></kwd>
<kwd lng="es"><![CDATA[repetición de servicios eficiencia reproductiva]]></kwd>
<kwd lng="en"><![CDATA[dairy bovines]]></kwd>
<kwd lng="en"><![CDATA[reproductive performance]]></kwd>
<kwd lng="en"><![CDATA[anestrus]]></kwd>
<kwd lng="en"><![CDATA[service repetition]]></kwd>
<kwd lng="en"><![CDATA[reproductive efficiency]]></kwd>
</kwd-group>
</article-meta>
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