<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662020000100129</article-id>
<article-id pub-id-type="doi">10.15174/au.2020.2840</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Degradabilidad y producción de metano in vitro del follaje de árboles y arbustos con potencial en la nutrición de rumiantes]]></article-title>
<article-title xml:lang="en"><![CDATA[Degradability and in vitro methane production of tree and shrub foliage with potential in ruminant nutrition]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Can]]></surname>
<given-names><![CDATA[Genesis Ester]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tzec-Gamboa]]></surname>
<given-names><![CDATA[Magnolia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Albores-Moreno]]></surname>
<given-names><![CDATA[Samuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sanginés-García]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-Urquizo]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chay-Canul]]></surname>
<given-names><![CDATA[Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Canul-Solis]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Gonzalez]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Diaz-Echeverria]]></surname>
<given-names><![CDATA[Victor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piñero-Vázquez]]></surname>
<given-names><![CDATA[Angel Trinidad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,I.T. Conkal  ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Yucatán Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,El colegio de la Frontera Sur  ]]></institution>
<addr-line><![CDATA[Campeche ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez Autónoma de Tabasco División Académica de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,I.T. Tizimín División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[ Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Autónoma de Chiapas Facultad Maya de Estudios Agropecuarios ]]></institution>
<addr-line><![CDATA[ Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,I. T. Zona Maya  ]]></institution>
<addr-line><![CDATA[ Quintana Roo]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>30</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662020000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662020000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662020000100129&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del estudio fue determinar el valor nutritivo, la fermentación ruminal y la producción de metano in vitro del follaje de especies arbóreas y arbustivas con potencial forrajero como estrategias de alimentación en época de secas y mitigación de las emisiones de metano. El líquido ruminal fue extraído por medio de una sonda esofágica. Se utilizó un diseño en bloques repetidos en el tiempo. El contenido de proteína cruda (PC) y fibra detergente neutro y acida fluctuaron de 6.14% a 21.78, 44.34% a 77.43% y 16.12% a 49.53% de materia seca (MS). No se encontró diferencia en el volumen máximo de gas (p &gt; 0.05). La degradabilidad fue diferente, observando la mejor en Tithonia diversifolia (760.40 g/kg de MS), Morus alba (800.66 g/kg de MS) y Hibiscus rosa-sinensis (800.16 g/kg de MS), mientras que la más baja fue Megatryrsus maximus (390.40 g/kg de MS y 287.40 g/kg de materia orgánica (MO)) (p &lt; 0.05). No se observó diferencia en la producción de metano (CH4) (p &gt; 0.05). Se concluye que L. leucocephala, P. piscipula, B. alicastrum y G. ulmifolia, T. diversifolia y M. alba tienen un alto potencial para ser incluidos en la dieta de rumiantes como fuentes de proteína en época de secas y estrategias para mitigar las emisiones de metano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of the study was to determine the nutritional value, ruminal fermentation, and in vitro methane production of foliage of tree and shrubs species with forage potential as feeding strategies in dry season and mitigation of methane emissions. The rumen liquor was taken by an esophageal tube. A repeated block design overtime was used. The content of crude protein (CP) and neutral and acid detergent fiber ranged from 6.14% to 21.78%, 44.34% to 77.43% and 16.12% to 49.53% of dry matter (DM). No difference was found in the maximum volume of gas (p &gt; 0.05). The degradability was different among species, and it was higher for Tithonia diversifolia (760.40 g/kg DM), Morus alba (800.66 g/kg DM) and Hibuscus rosa-sinensis (800.16 g/kg DM), whilst the lower was for Megathyrsus maximus (390.40 g/kg DM and 287.40 g/kg organic matter (OM)) (p &lt; 0.05). No difference in methane (CH4) production was observed (p &gt; 0.05). It is concluded that L. leucocephala, P. piscipula, B. alicastrum and G. ulmifolia, T. diversifolia, and M. alba have a high potential to be included in the ruminant diet as sources of protein in the dry season and strategies to mitigate methane emissions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Metano]]></kwd>
<kwd lng="es"><![CDATA[metabolitos secundarios]]></kwd>
<kwd lng="es"><![CDATA[mitigación]]></kwd>
<kwd lng="es"><![CDATA[trópico]]></kwd>
<kwd lng="en"><![CDATA[Methane]]></kwd>
<kwd lng="en"><![CDATA[secondary metabolites]]></kwd>
<kwd lng="en"><![CDATA[mitigation]]></kwd>
<kwd lng="en"><![CDATA[tropics]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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