<?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>S2007-11242020000400946</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v11i4.5124</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Frecuencia de M. hyopneumoniae, M. hyorhinis y M. hyosynoviae en muestras nasales y de pulmón de cerdos con síntomas de neumonía enzoótica porcina]]></article-title>
<article-title xml:lang="en"><![CDATA[Frequency of M. hyopneumoniae, M. hyorhinis and M. hyosynoviae in nasal and lung samples from pigs with symptoms of porcine enzootic pneumonia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda Morales]]></surname>
<given-names><![CDATA[Rosa Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Trejo]]></surname>
<given-names><![CDATA[Verónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Cerino]]></surname>
<given-names><![CDATA[Luis Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo Casas]]></surname>
<given-names><![CDATA[Erika Margarita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarmiento Silva]]></surname>
<given-names><![CDATA[Rosa Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trujillo Ortega]]></surname>
<given-names><![CDATA[María Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán Figueroa]]></surname>
<given-names><![CDATA[Rolando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trigo Tavera]]></surname>
<given-names><![CDATA[Francisco José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Veterinaria y Zootecnia Departamento de Microbiología e Inmunología]]></institution>
<addr-line><![CDATA[Ciudad Universitaria CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital General &#8220;Dr. Manuel Gea González&#8221; Departamento de Biología Molecular e Histocompatibilidad ]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Veterinaria y Zootecnia Departamento de Cerdos]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Veterinaria y Zootecnia Departamento de Patología]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>4</numero>
<fpage>946</fpage>
<lpage>960</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242020000400946&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242020000400946&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242020000400946&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen M. hyopneumoniae, M. hyorhinis y M. hyopsynoviae son especies genéticamente relacionadas del género Mycoplasma que afectan la producción porcina. El objetivo de este trabajo fue el aislamiento e identificación por PCR de M. hyopneumoniae, M. hyorhinis y M. hyosynoviae a partir de hisopos nasales y muestras de pulmón de cerdos de diferentes regiones mexicanas para determinar la frecuencia de estas especies y evaluar la PCR como herramienta diagnóstica para NEP. Se incluyeron cerdos de 4 a 8 semanas con diagnóstico clínico de NEP. Se obtuvieron muestras de pulmón e hisopos nasales para el aislamiento de Mycoplasma en medio Friis líquido y se identificaron mediante la PCR especie-específica basada en la subunidad 16S rRNA. El aislamiento se logró en 37.11 % (36/97) muestras. Las tres especies de Mycoplasma se identificaron en muestras de pulmón e hisopos nasales. La co-infección por Mycoplasma se identificó en el 27.77 % (10/36). Los géneros bacterianos asociados a las infecciones por Mycoplasma fueron E. coli, Bordetella, Enterobacter, SCN, Corynebacterium, Pasteurella, Streptococcus, Shigella y Kebsiella. La infección mixta estuvo presente en 26 hisopos nasales (45.61 %) y ausente en pulmones. Se concluyó que la frecuencia de Mycoplasma en las fincas de producción fue mayor a la esperada (40.27 %). También se identificaron otras especies de Mycoplasma involucradas en el desarrollo de la NEP. Por lo tanto, la vigilancia asistida por el aislamiento y las técnicas moleculares pueden ser de gran ayuda para la eliminación de Mycoplasma de las explotaciones porcinas y para los proveedores de pie de cría.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract M. hyopneumoniae, M. hyorhinis and M. hyosynoviae are genetically related species of the genus Mycoplasma that affect pig production. The objective of this work was the isolation and identification by PCR of M. hyopneumoniae, M. hyorhinis and M. hyosynoviae from nasal swabs and lung samples of pigs from different regions of Mexico in order to determine the frequency of these species and to evaluate PCR as a diagnostic tool for PEP. Pigs aged 4 to 8 weeks with clinical diagnosis of PEP were included. Lung samples and nasal swabs were obtained for the isolation of the Mycoplasma in liquid Friis medium and identified by species-specific PCR based on the 16S rRNA subunit. Isolation was achieved in 37.11 % (36/97) of the samples. The three Mycoplasma species were identified in lung and nasal swab samples. Mycoplasma co-infection was identified in 27.77 % (10/36). The bacterial genera associated with Mycoplasma infections were E. coli, Bordetella, Enterobacter, SCN, Corynebacterium, Pasteurella, Streptococcus, Shigella and Klebsiella. Mixed infection was present in 26 nasal swabs (45.61 %) and absent in the lungs. It was concluded that the frequency of Mycoplasma on production farms was higher than expected (40.27 %). It was also identified other Mycoplasma species involved in the development of PEP. Therefore, surveillance through isolation and molecular techniques can be of great help to breeding stock providers, as well as for removing Mycoplasma from pig farms.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Micoplasmosis]]></kwd>
<kwd lng="es"><![CDATA[M. hyopneumoniae]]></kwd>
<kwd lng="es"><![CDATA[M. hyorhinis]]></kwd>
<kwd lng="es"><![CDATA[M. hyosynoviae]]></kwd>
<kwd lng="es"><![CDATA[Neumonía enzoótica porcina]]></kwd>
<kwd lng="en"><![CDATA[Mycoplasmosis]]></kwd>
<kwd lng="en"><![CDATA[M. hyopneumoniae]]></kwd>
<kwd lng="en"><![CDATA[M. hyorhinis]]></kwd>
<kwd lng="en"><![CDATA[M. hyosynoviae]]></kwd>
<kwd lng="en"><![CDATA[Porcine enzootic pneumonia]]></kwd>
</kwd-group>
</article-meta>
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