<?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>S2007-11242015000400361</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Loci asociados con enfermedades genéticas y calidad de carne en bovinos Charolais mexicanos]]></article-title>
<article-title xml:lang="en"><![CDATA[Loci associated with genetic disorders and meat quality in Charolais cattle in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sifuentes Rincón]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arellano Vera]]></surname>
<given-names><![CDATA[Williams]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Parra Bracamonte]]></surname>
<given-names><![CDATA[Gaspar Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ambriz Morales]]></surname>
<given-names><![CDATA[Pascuala]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Bustamante]]></surname>
<given-names><![CDATA[Luis Arístides]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro de Biotecnología Genómica Laboratorio de Biotecnología Animal]]></institution>
<addr-line><![CDATA[Cd. Reynosa Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Charolais Herd Book de México A.C. Comité Técnico ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<volume>6</volume>
<numero>4</numero>
<fpage>361</fpage>
<lpage>375</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242015000400361&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242015000400361&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242015000400361&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se determinaron las frecuencias alélicas y genotípicas de ocho marcadores localizados en los genes calpaína (CAPN, 4751 y 316), calpastatina (CASTT1) y tiroglobulina (TG5), asociados a calidad de carne, y en los genes, miostatina (MSTN, Q204X), arginino succinato sintasa (ASS), monofosfato sintasa (UMPS) y miofosforilasa (PYGM), asociados a enfermedades genéticas de ganado bovino. Se muestrearon 493 animales Charolais de registro de dos hatos ubicados en Sonora (n=157) y tres en Nuevo León (n=336). No se encontraron portadores de los alelos T-ASS y T-UMPS, pero sí portadores del alelo Q204X del gen MSTN en frecuencias de &#8804; 1 % en las poblaciones de Sonora y de 8.6 a 14.4 % en las de Nuevo León. Además, se identificaron portadores del marcador del gen PYGM, en frecuencias del 6.5 y de 1.0 % para un hato de Sonora y otro de Nuevo León, respectivamente. El análisis de diferenciación génica pareado entre las poblaciones y con los cuatro loci mostró que hay diferencias altamente significativas dentro de poblaciones del noroeste (P&lt;0.0001) y entre éstas y las del noreste (P&lt;0.001), la cual es explicada principalmente por los loci CAPN-316 y TG5. De acuerdo a los resultados obtenidos se recomienda el monitoreo del marcador del gen PYGM y del alelo Q204X del gen MSTN, así como también implementar estrategias para confirmar la utilidad de los marcadores asociados a calidad y productividad como herramienta para complementar los programas de mejoramiento genético.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Allelic and genotypic frequencies of eight markers previously associated to genetic disorders and meat quality and located in the calpain (CAPN1-4751 and CAPN1-316), calpastatin (CAST-T1), thyroglobulin (TG5), myostatin (MSTN, Q204X), argininosuccinate synthase (ASS), monophosphate synthase (UMPS) and myophosphorylase (PYGM) genes, were determined from 493 registered Charolais animals sampled from two herds located at Sonora (n= 157) and three at Nuevo León (n= 336), Mexico. No carriers of mutated alleles of ASS and UMPS genes were found, but carriers of the MSTN Q204X allele were identified at frequencies of &#8804; 1 % in Sonora populations and 8.6 to 14.4 % in Nuevo Leon. In addition, carriers of PYGM marker were identified at frequencies of 6.49 and 1% in a herd from Sonora and other from Nuevo León, respectively. Analysis of gene differentiation among herds and with four loci showed that there are highly significant differences within Northwest populations (P&lt;0.0001) and between them and the Northeast (P&lt;0.001), differentiation is mainly explained by the loci CAPN-316 and TG5. According to the obtained results, the periodic monitoring of the PYGM marker gene and of the allele Q204X the MSTN gene is propose; also it is important to implement strategies to confirm the usefulness of those markers associated with quality and productivity as a tool to complement breeding programs.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Defectos genéticos]]></kwd>
<kwd lng="es"><![CDATA[Marmoleo]]></kwd>
<kwd lng="es"><![CDATA[Suavidad de la carne]]></kwd>
<kwd lng="es"><![CDATA[ADN]]></kwd>
<kwd lng="en"><![CDATA[Genetic defects]]></kwd>
<kwd lng="en"><![CDATA[Marbling]]></kwd>
<kwd lng="en"><![CDATA[Tenderness]]></kwd>
<kwd lng="en"><![CDATA[DNA]]></kwd>
</kwd-group>
</article-meta>
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