<?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>0123-4226</journal-id>
<journal-title><![CDATA[Revista U.D.C.A Actualidad & Divulgación Científica]]></journal-title>
<abbrev-journal-title><![CDATA[rev.udcaactual.divulg.cient.]]></abbrev-journal-title>
<issn>0123-4226</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Aplicadas y Ambientales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-42262021000200014</article-id>
<article-id pub-id-type="doi">10.31910/rudca.v24.n2.2021.2093</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Indicadores de estabilidad aeróbica en ensilajes de la mezcla Tithonia diversifolia/Pennisetum purpureum enriquecidos con lactobacillus]]></article-title>
<article-title xml:lang="en"><![CDATA[Indicators of aerobic stability in silages of the mixture Tithonia diversifolia/Pennisetum purpureum enriched with lactobacillus]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Holguín]]></surname>
<given-names><![CDATA[Vilma A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuchillo]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Delgado]]></surname>
<given-names><![CDATA[Jairo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Tolima Departamento de Producción Pecuaria Grupo de Investigación Sistemas Agroforestales Pecuarios]]></institution>
<addr-line><![CDATA[Ibagué Tolima]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Ciencias Médicas y Nutrición &#8220;Salvador Zubirán&#8221;  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Tolima Departamento de Producción Pecuaria Grupo de Investigación Sistemas Agroforestales Pecuarios]]></institution>
<addr-line><![CDATA[Ibagué Tolima]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>24</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-42262021000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-42262021000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-42262021000200014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En épocas de escasez, los ganaderos recurren a conservar el alimento mediante procesos de fermentación anaeróbica, conocidos como ensilajes. Una vez que el silo es abierto, el sustrato resulta aeróbicamente estable, cuando, al momento de la apertura, conserva su integridad nutricional. Esto es el resultado de un ambiente ácido que restringe los efectos deletéreos de la acción de microrganismos patógenos, expresado en indicadores de estabilidad a la exposición aeróbica. Uno de los problemas empíricos que enfrenta el productor es resolver la pregunta de cómo evitar el deterioro del ensilaje, una vez es abierto, por lo cual, esta investigación apunta a la resistencia en el periodo de exposición aeróbica (PEA) de un ensilaje de Pennisetum purpureum (PP), con diferentes niveles de sustitución de Tithonia diversifolia (TD). El estudio, se adelantó en el Centro Internacional de Agricultura Tropical en Colombia. Con un ensilaje de 90 días de fermentación, se realizó una prueba de estabilidad aeróbica de siete días, usando ensilajes de un kilogramo, a diferentes proporciones (%) de TD/PP: 100/0, 67/33, 33/67 y 0/100, enriquecidos con dos aditivos basados en Lactobacillus. Se midió el cambio de la materia seca, temperatura y el pH, encontrándose una estabilidad a la exposición aeróbica. El papel de TD es notable, una vez que el ensilado entra en el PEA, debido a la capacidad tampón que amortigua el cambio de pH, una vez que se abre el silo, generando mayor estabilidad aeróbica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In times of scarcity, farmers resort to preserving food through anaerobic fermentation processes, known as silage. Once the silo is opened, the substrate is aerobically stable if it retains its nutritional integrity when opening. This is the result of an acidic environment that restricts the deleterious effects of the action of pathogenic microorganisms, expressed as indicators of stability to aerobic exposure. One of the empirical problems faced by the producer is to solve the question of how to avoid deterioration of the silage once it is opened, for which this research points to the resistance in the period of aerobic exposure (PEA) of a silage of Pennisetum purpureum (PP) with different levels of substitution of Tithonia diversifolia (TD). The study was conducted at the International Center for Tropical Agriculture in Colombia. With a 90-day fermentation silage, a seven-day aerobic stability test was carried out, using a kilogram silage at different proportions (%) of TD/PP: 100/0, 67/33, 33/67 and 0/100 enriched with two Lactobacillus-based additives. The change in dry matter, temperature and pH was measured, finding stability to aerobic exposure. The role of TD is remarkable once the silage enters the PEA due to the buffer capacity that buffers the change in pH once the silo is opened, generating greater aerobic stability.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Acidez]]></kwd>
<kwd lng="es"><![CDATA[Capacidad de búfer]]></kwd>
<kwd lng="es"><![CDATA[Deterioro aeróbico]]></kwd>
<kwd lng="es"><![CDATA[Variación térmica]]></kwd>
<kwd lng="es"><![CDATA[Fermentación]]></kwd>
<kwd lng="en"><![CDATA[Acidity]]></kwd>
<kwd lng="en"><![CDATA[Buffer capacity]]></kwd>
<kwd lng="en"><![CDATA[Aerobic deterioration]]></kwd>
<kwd lng="en"><![CDATA[Thermal variation]]></kwd>
<kwd lng="en"><![CDATA[Fermentation]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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