<?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>S0188-62662020000100118</article-id>
<article-id pub-id-type="doi">10.15174/au.2020.2712</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comportamiento productivo y perfil metabólico de becerros suplementados con glicerina cruda]]></article-title>
<article-title xml:lang="en"><![CDATA[Productive behavior and metabolic profile in steers supplemented with crude glycerin]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinzón-Díaz]]></surname>
<given-names><![CDATA[Carmen E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Ocampo]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez-Martínez]]></surname>
<given-names><![CDATA[Pablo A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallegos-De la Hoya]]></surname>
<given-names><![CDATA[Mayela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Torres]]></surname>
<given-names><![CDATA[Esperanza]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pámanes-Carrasco]]></surname>
<given-names><![CDATA[Gerardo A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Durango Dgo.]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[Durango Dgo.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Tecnológico Nacional de México Instituto Tecnológico del Valle del Guadiana ]]></institution>
<addr-line><![CDATA[Durango Dgo.]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Instituto de Silvicultura e Industria de la Madera ]]></institution>
<addr-line><![CDATA[Durango Dgo.]]></addr-line>
<country>México</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=S0188-62662020000100118&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662020000100118&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662020000100118&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio es evaluar el comportamiento productivo y perfil metabólico de 64 becerros (peso inicial 364 kg ± 5.9 kg) alimentados con cuatro dietas experimentales (16 animales por tratamiento) con la inclusión de glicerina cruda (GC) como reemplazo de grano de maíz. Las dietas contenían 0%, 5%, 15% y 25% de GC y fueron suministradas durante 90 días en un diseño completamente al azar. Los animales se pesaron cada 90 días. Se tomaron muestras de sangre antes del alimento de la mañana para el análisis de metabolitos séricos. La adición de GC no afectó las variables de comportamiento productivo (p &gt; 0.05). La interacción nivel de GC por mes de muestreo fue significativa para la glucosa (p &lt; 0.05). Sin embargo, la inclusión de GC no afectó las concentraciones de urea y triglicéridos (p &gt; 0.05). La inclusión de glicerina en la dieta de rumiantes representa una alternativa energética cuando hay baja disponibilidad de maíz.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This study aimed to evaluate the productive behavior and metabolic profile of 64 steers (initial weight 364 kg ± 5.9 kg) fed with four experimental diets (16 animals per treatment) with the inclusion of crude glycerin (CG) as a replacement of corn grain. Diets contained 0%, 5%, 15%, and 25% of CG, and steers were fed during 90 days in a completely randomized design. Steers were weighed every 30 days. Blood samples from each steer were taken before the morning feed by puncturing in the coccygeal vein to evaluate serum metabolites. The addition of CG did not affect the variables of productive behavior (p &gt; 0.05). The interaction level of CG per sampling month was significant for glucose (p &lt; 0.05); however, the inclusion of CG did not affect the urea and triglycerides concentrations (p &gt; 0.05). The inclusion of crude glycerin to ruminants&#8217; diets is an energetic alternative when there is low corn grains availability.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Metabolitos sanguíneos]]></kwd>
<kwd lng="es"><![CDATA[ganancia diaria de peso]]></kwd>
<kwd lng="es"><![CDATA[conversión alimenticia]]></kwd>
<kwd lng="es"><![CDATA[maíz]]></kwd>
<kwd lng="es"><![CDATA[gluconeogénesis]]></kwd>
<kwd lng="en"><![CDATA[Blood metabolites]]></kwd>
<kwd lng="en"><![CDATA[daily weight gain]]></kwd>
<kwd lng="en"><![CDATA[feed conversion]]></kwd>
<kwd lng="en"><![CDATA[corn]]></kwd>
<kwd lng="en"><![CDATA[gluconeogenesis]]></kwd>
</kwd-group>
</article-meta>
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