<?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>S2007-11242017000200157</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v8i2.4432</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Presencia de plaguicidas organoclorados en forraje para ganado en unidades de producción de leche orgánica en Tecpatán, Chiapas]]></article-title>
<article-title xml:lang="en"><![CDATA[Presence of organochlorine pesticides in forage for cattle in organic milk production units in Tecpatan, Chiapas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murga Juárez]]></surname>
<given-names><![CDATA[María N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Tolentino]]></surname>
<given-names><![CDATA[Rey]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega y León]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez González]]></surname>
<given-names><![CDATA[José J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schettino Bermúdez]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruíz Rojas]]></surname>
<given-names><![CDATA[Jorge L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yamazaki Maza]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[Xochimilco ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Producción Agrícola y Animal ]]></institution>
<addr-line><![CDATA[CDMX ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Chiapas Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>2</numero>
<fpage>157</fpage>
<lpage>166</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242017000200157&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242017000200157&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242017000200157&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La presencia de plaguicidas organoclorados en el ambiente es preocupante por su persistencia, potencial de transporte a larga distancia y grado de toxicidad para la fauna y los seres humanos. En México, Chiapas ocupa el primer lugar en la producción de alimentos orgánicos, y Tecpatán es el principal municipio productor de leche orgánica. El objetivo de este trabajo fue determinar la presencia de plaguicidas organoclorados en forraje para ganado lechero en unidades de producción de leche orgánica. Se eligieron tres unidades de producción de leche orgánica y se colectaron muestras de forraje y leche en cada unidad. Los plaguicidas se extrajeron y purificaron con base en lo establecido por la USEPA (United States Environmental Protection Agency) y se analizaron por cromatografía de gases con detector de captura de electrones. Los compuestos que rebasaron el límite máximo permisible según el Codex Alimentarius fueron lindano, heptacloro + epóxido de heptacloro y aldrín + dieldrín (37.5 ± 84, 62 ± 125 y 20 ± 50 ng.g-1 base grasa, respectivamente). En las muestras de forraje los valores más altos fueron alfa + beta-HCH, lindano y heptacloro + epóxido de heptacloro (76.3 ± 140, 43 ± 105 ng.g-1 y 40 ± 76 ng.g-1 peso seco). Es probable que la destacada presencia de estos compuestos se deba a su utilización en el control de vectores en campañas de salud o de ectoparásitos del ganado de la región por parte de productores convencionales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The presence of organochlorine pesticides in the environment is a current topic due to the persistence, potential for long-range transport and toxicity to wildlife and humans. In Mexico, Chiapas has the first place in the production of organic food, where Tecpatan municipality is the first place of organic milk. Twenty-five years ago the farmers did not use organochlorine pesticides, but some conventional farmers employ this compounds for controlling pests and disease vectors with knowledge of the health authorities. The aim of this study was to determine the presence of organochlorine pesticides in feed for dairy cattle production of organic milk. Three production units of organic milk samples were chosen to collect fodder and milk for one year, considering wet and dry season. Pesticides were extracted and purified based on the provisions of the USEPA (United States Environmental Protection Agency) and analyzed by gas chromatography with electron capture detector (ECD 63Ni). The compounds that exceeded the maximum permissible limit by the Codex Alimentarius were lindane, heptachlor and heptachlor epoxide + aldrin + dieldrin (37.5 ± 84, 125 ± 62 and 20 ± 50 basis ng.g-1 fatty base, respectively). In the forage samples the higher values were alpha + beta-HCH, lindane and heptachlor + heptachlor epoxide (76.3 ± 140, 105 ± 43 ng.g-1 and 40 ± 76 ng.g-1 dry weight). It is likely that the strong presence of these compounds is due to their use in vector control in health campaigns or ectoparasites of livestock in the region by conventional producers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Plaguicidas organoclorados]]></kwd>
<kwd lng="es"><![CDATA[Forraje]]></kwd>
<kwd lng="es"><![CDATA[Producción orgánica]]></kwd>
<kwd lng="es"><![CDATA[Chiapas]]></kwd>
<kwd lng="en"><![CDATA[Organochlorine pesticides]]></kwd>
<kwd lng="en"><![CDATA[Forage]]></kwd>
<kwd lng="en"><![CDATA[Organic production]]></kwd>
<kwd lng="en"><![CDATA[Chiapas]]></kwd>
</kwd-group>
</article-meta>
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