<?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>S0188-62662022000100165</article-id>
<article-id pub-id-type="doi">10.15174/au.2022.3559</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Calidad nutritiva y densidad microbiana de nopal duraznillo (Opuntia leucotricha) fermentado en estado sólido]]></article-title>
<article-title xml:lang="en"><![CDATA[Nutritional quality and microbial density of nopal duraznillo (Opuntia leucotricha) fermented in solid state]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado-Quiñones]]></surname>
<given-names><![CDATA[Heriberto de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barraza-Govea]]></surname>
<given-names><![CDATA[Jesús Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrete-Carreón]]></surname>
<given-names><![CDATA[Francisco Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murillo Ortiz]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Häubi-Segura]]></surname>
<given-names><![CDATA[Carlos Urban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores-Hernández]]></surname>
<given-names><![CDATA[Arnoldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pámanes-Carrasco]]></surname>
<given-names><![CDATA[Gerardo Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Araiza-Rosales]]></surname>
<given-names><![CDATA[Elia Esther]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Tecnológica de Rodeo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Aguascalientes Centro de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma Chapingo Unidad Regional Universitaria de Zonas Áridas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Instituto de Silvicultura e Industria de la Madera ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>32</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662022000100165&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662022000100165&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662022000100165&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El nopal duraznillo (Opuntia leucotricha) es utilizado para complementar la alimentación del ganado bovino en pastoreo. El objetivo de esta investigación fue evaluar el valor nutricional del nopal duraznillo fermentado aeróbicamente. Se evaluó el efecto de aditivo (A), chamuscado (CH) y tiempo de fermentación (TF) sobre la densidad celular microbiana total (DCMT) y la calidad nutritiva del nopal fermentado en estado sólido. La mayor DCMT (660.0 millones de células ml-1) se observó en el tratamiento 16 (con A, sin CH y con 24 h de TF). La proteína cruda descendió a partir de las 24 h de TF. Con base en la composición química (PC = 22.7%, FDA = 18.3%, LDA = 3.3%), se considera que el nopal sometido al tratamiento 16 presenta buena calidad nutricional para el ganado. Con respecto a la digestibilidad in vitro, el mayor valor observado (93.8%) se obtuvo con el tratamiento 13 (con A, sin CH y con 0 h de TF).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Nopal duraznillo (Opuntia leucotricha) is used to supplement the feeding of grazing cattle. The objective of this research was to evaluate the nutritional value of aerobically fermented nopal duraznillo. The effect of additive (A), singed (S), and fermentation time (FT) on total microbial cell density (TMCD) and nutritional quality of solid-state fermented nopal was evaluated. The highest TMCD (660.0 million cells ml-1) was observed in treatment 16 (with A, without S, and with 24 h of FT). Crude protein decreased after 24 h of FT. Based on the chemical composition (CP = 22.7%, ADF = 18.3%, ADL = 3.3%), it is considered that the nopal subjected to treatment 16 presents good nutritional quality for cattle. Regarding in vitro digestibility, the highest value observed (93.8%) was obtained with treatment 13 (with A, without S, and 0 h of FT).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Nopal silvestre]]></kwd>
<kwd lng="es"><![CDATA[proteína]]></kwd>
<kwd lng="es"><![CDATA[forraje]]></kwd>
<kwd lng="es"><![CDATA[levaduras]]></kwd>
<kwd lng="es"><![CDATA[rumiantes]]></kwd>
<kwd lng="en"><![CDATA[Wild cacti]]></kwd>
<kwd lng="en"><![CDATA[protein]]></kwd>
<kwd lng="en"><![CDATA[forage]]></kwd>
<kwd lng="en"><![CDATA[yeasts]]></kwd>
<kwd lng="en"><![CDATA[ruminants]]></kwd>
</kwd-group>
</article-meta>
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