<?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>S0188-62662019000100187</article-id>
<article-id pub-id-type="doi">10.15174/au.2019.2204</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rendimiento, perfiles nutrimental y de fermentación ruminal in vitro de pasto maralfalfa (Cenchrus purpureus Schumach.) Morrone a diferentes frecuencias de corte en clima cálido]]></article-title>
<article-title xml:lang="en"><![CDATA[Yield, nutrimental and in vitro ruminal fermentation profiles of maralfal fa grass (Cenchrus purpureus Schumach.) Morrone at different cutting frequencies in warm weather]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ventura Ríos]]></surname>
<given-names><![CDATA[Joel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Vazquez]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Salas]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz García]]></surname>
<given-names><![CDATA[Canuto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muro Reyes]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado Peralta]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas García]]></surname>
<given-names><![CDATA[Adelaido Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Hernández]]></surname>
<given-names><![CDATA[Aldenamar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Trouw Nutrition México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Guerrero Facultad de Medicina Veterinaria y Zootecnia No.2 ]]></institution>
<addr-line><![CDATA[Cuajinicuilapa Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Juárez Autónoma de Tabasco División Académica de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>29</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662019000100187&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662019000100187&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662019000100187&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio fue evaluar el rendimiento, los perfiles nutrimental y de fermentación ruminal in vitro del pasto maralfalfa (Cenchrus purpureus Schumach.) Morrone, a cuatro frecuencias de corte. Los tratamientos se distribuyeron en bloques al azar en parcelas divididas con tres repeticiones. Los datos se analizaron en modelo lineal generalizado (GLM, por sus siglas en inglés) con el paquete estadístico de Statistical Analysis Software (SAS) y las medias se compararon con Tukey. El mayor rendimiento de biomasa (20.2 Mg MS ha-1), fibra detergente neutro (FDN) (66.7%), celulosa (CL) (45.4%), energía (16.3 MJ kg-1 MS) y dióxido de carbono (CO2) (89.7%) se obtuvo en la frecuencia de corte a cada 120 días (p &lt; 0.05). El contenido de proteína cruda (PC) (9.3%), hemicelulosa (HC) (17.6%), cenizas (11.7%), humedad (8.4%) y lignina detergente ácido (LDA) (4.7%), ácido acético (77.8%), propiónico (29.4%), butírico (12.6%), CH4 (11.9%) y la Digestibilidad de la materia seca (DivMS) (55.6%), fue más elevado en la frecuencia de corte a 30 días (p &lt; 0.05). El contenido de extracto etéreo (EE) (1.8%, p &lt; 0.05) fue mayor en la frecuencia de corte al día 90. El pasto maralfalfa tiene una mejor composición química y mayor contenido de ácidos grasos volátiles (AGV) en etapas tempranas de corte.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of this experiment was to evaluate the yield, nutrimental and in vitro ruminal fermentation profiles of maralfalfa grass (Cenchrus purpureus Schumach.) Morrone, at four harvest frequencies. Treatments were allocated in a randomized block design in divided plots with three replications. Data were analyzed using the Statistical Analysis Software (SAS) general lineal model (GLM) procedure, and a comparison of means (Tukey, &#945; = 0.05) was made. The maximum biomass yield (20.2 kg-1 DM ha-1), NDF (66.7%), LC (45.4%), energy (16.3 MJ kg-1 DM) and CO2 (89.7%) were found in the cutting frequency at 120 days (p &lt; 0.05). The highest content of CP (9.3%), CH (17.6%), ash (11.7%) moisture (8.4%) and ADL (4.7%), acetic acid (77.8%), propionic acid (29.4%), butyric acid (12.6%), CH4 (11.9%) and IVDMD (55.6%) was found in the frequency at every 30 days (p &lt; 0.05). The content of EE (1.8%; p &lt; 0.05) was higher in the cutoff frequency to day 90. The maralfalfa grass has a better chemical composition, increased production of AGV in early stages of court, allowing it to be a good source in animal feed production.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cenchrus]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="es"><![CDATA[composición química]]></kwd>
<kwd lng="es"><![CDATA[digestibilidad]]></kwd>
<kwd lng="es"><![CDATA[AGV]]></kwd>
<kwd lng="es"><![CDATA[frecuencia]]></kwd>
<kwd lng="en"><![CDATA[Cenchrus]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
<kwd lng="en"><![CDATA[chemical composition]]></kwd>
<kwd lng="en"><![CDATA[digestibility]]></kwd>
<kwd lng="en"><![CDATA[AGV]]></kwd>
<kwd lng="en"><![CDATA[frequency]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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