<?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>S2007-11242018000400615</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v9i4.4654</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de pedigrí en la determinación de la diversidad genética de poblaciones bovinas para carne mexicanas]]></article-title>
<article-title xml:lang="en"><![CDATA[Pedigree analysis for determination of genetic diversity in mexican beef cattle populations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Valverde]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgadillo-Zapata]]></surname>
<given-names><![CDATA[Antonio R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez-Viveros]]></surname>
<given-names><![CDATA[Joel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hidalgo-Moreno]]></surname>
<given-names><![CDATA[Jorge A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez-Domínguez]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Almeida]]></surname>
<given-names><![CDATA[Felipe A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Quiroz]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Muñiz]]></surname>
<given-names><![CDATA[José G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Chihuahua  ]]></institution>
<addr-line><![CDATA[ Chihuahua]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>4</numero>
<fpage>615</fpage>
<lpage>635</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242018000400615&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242018000400615&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242018000400615&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El objetivo de este estudio fue evaluar la diversidad genética de siete poblaciones de bovinos para carne en México, mediante análisis de sus pedigríes. Los análisis se realizaron con el programa Endog, utilizando información de los animales inscritos en el libro genealógico nacional de cada raza. Los tamaños de los pedigríes estudiados fueron: Angus (AN)= 73,271; Brangus Negro (BN)= 68,474; Brangus Rojo (BR)= 12,925; Hereford (HE)= 13,248; Limousin (LI)= 53,221; Salers (SA)= 14,065; y Suizo Europeo (SE)= 184,788. En general, las poblaciones mostraron mejoras importantes en la integridad de sus pedigríes en los 10 años más recientes, con parámetros comparables a los publicados en otras poblaciones de bovinos. El intervalo generacional varió de 5.1 a 7.2 años entre razas. Los coeficientes de consanguinidad y de relación genética aditiva promedio fueron relativamente bajos en las diferentes poblaciones (0.9-4.2 y 0.3-6.5 %, respectivamente); aunque en algunas razas (BN, BR y HE) se detectaron incrementos de estos indicadores en los 10 años más recientes. El tamaño efectivo de población fluctuó entre 24 y 192, con valores menores que 50 en BR y SA. Los parámetros relacionados con la probabilidad de origen de los genes indican que las contribuciones desbalanceadas de los animales fundadores, los cuellos de botella y la deriva genética, han tenido un efecto importante en las poblaciones actuales, con la consecuente pérdida de diversidad genética. Se recomienda continuar o adoptar estrategias de apareamiento que minimicen la consanguinidad, y el uso intensivo de pocos animales para mantener la variabilidad genética de futuras generaciones, así como ampliar la diversidad genética mediante el uso estratégico de genes provenientes de otros países.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The objective of this study was to evaluate genetic diversity of seven Mexican beef cattle populations, using pedigree analyses. The analyses were carried out with the Endog software, using information of the registered animals on national herd-book of each breed. The size of the populations studied were: Angus (AN)= 73,271; Black Brangus (BN)= 68,474; Red Brangus (BR)= 12,925; Hereford (HE)= 13,248; Limousin (LI)= 53,221; Salers (SA)= 14,065; and Braunvieh (SE)= 184,788. In general, the populations showed important improvements in pedigree integrities for the more recent 10 yr, with comparative parameters to other published in cattle populations. The generation interval varied among breeds from 5.1 to 7.2 yr. The average inbreeding and relatedness coefficients were relatively low in the different populations (0.9-4.2 and 0.3-6.5 %, respectively); although increases of these indicators during the 10 more recent years were detected in some breeds (BN, BR and HE). The effective population size of studied populations fluctuated between 24 and 192, with values lower than 50 in BR and SA. The parameters related with probability of gene origin indicated that the unbalanced contribution of founders, the bottlenecks and genetic drift have had an important effect on the current populations with the consequent losses in genetic diversity. It is recommended to continue or adopt mating strategies that minimize inbreeding and the intensive use of few animals to maintain genetic variability in future generations, and to increase the genetic diversity through the strategical use of genes from other countries.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tamaño población]]></kwd>
<kwd lng="es"><![CDATA[Consanguinidad]]></kwd>
<kwd lng="es"><![CDATA[Número ancestros]]></kwd>
<kwd lng="es"><![CDATA[Intervalo generacional]]></kwd>
<kwd lng="en"><![CDATA[Population size]]></kwd>
<kwd lng="en"><![CDATA[Inbreeding]]></kwd>
<kwd lng="en"><![CDATA[Number ancestors]]></kwd>
<kwd lng="en"><![CDATA[Generation interval]]></kwd>
</kwd-group>
</article-meta>
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