<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282019000200253</article-id>
<article-id pub-id-type="doi">10.19136/era.a6n17.1613</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reemplazo de grano de sorgo con fruto de Guazuma ulmifolia en dietas de corderos con diferente forraje]]></article-title>
<article-title xml:lang="en"><![CDATA[Replacement of sorghum grain with Guazuma ulmifolia fruit in lambs&#8217; diets with different forage]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Partida-Hernández]]></surname>
<given-names><![CDATA[Mizael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loya-Olguin]]></surname>
<given-names><![CDATA[José Lenin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Gurrola]]></surname>
<given-names><![CDATA[Agapito]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Ramírez]]></surname>
<given-names><![CDATA[José Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Ballesteros]]></surname>
<given-names><![CDATA[Juan Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amezcua-Jaeger]]></surname>
<given-names><![CDATA[Teresita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escalera Valente]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sanginés-García]]></surname>
<given-names><![CDATA[Leonor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nayarit Posgrado en Ciencias Biológico Agropecuarias ]]></institution>
<addr-line><![CDATA[Compostela Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nayarit Unidad Académica de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Compostela Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Departamento de Nutrición Animal ]]></institution>
<addr-line><![CDATA[Delegación Tlalpan Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>6</volume>
<numero>17</numero>
<fpage>253</fpage>
<lpage>262</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282019000200253&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282019000200253&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282019000200253&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El objetivo del estudio fue evaluar el efecto de sustituir el grano de sorgo (SG) con fruto de Guazuma ulmifolia (GU) en dietas para corderos a base de alfalfa (AA) o maralfalfa (MA) sobre la digestibilidad y el comportamiento productivo. Se utilizaron cuatro ovinos machos Blackbelly de 35 kg de peso promedio, con cánula ruminal para determinar la digestibilidad in vivo, in vitro e in situ de la materia seca. En la prueba de comportamiento productivo se utilizaron 20 corderos Pelibuey de 15 ± 1.5 kg de peso bajo un diseño completamente al azar. La composición porcentual de las dietas experimentales fue: dieta 1: 55 de MA, 20 de GU y 8 de SG; dieta 2: 55 de MA, 8 de GU y 20 de SG; dieta 3: 55 de AA, 20 de GU y 8 de SG y dieta 4: 55 de AA, 8 de GU y 20 de SG. Todas las dietas contenían melaza de caña de azúcar (5%), pasta de canola (9%) y mezcla de minerales (3%). La sustitución de SG por GU en la dieta no afectó la digestibilidad de la materia seca ni el comportamiento productivo de los ovinos (p &gt; 0.05). Pero los valores de digestibilidad y comportamiento productivo fueron inferiores (p &lt; 0.05) con la inclusión de MA en las dietas. El grano de sorgo puede ser sustituido hasta en un 20% por el fruto de Guazuma ulmifolia en dietas de corderos, con niveles altos y bajos de fibra, sin afectar la digestibilidad de la materia seca ni el comportamiento productivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The objective of this study was to evaluate the effect of replacement of sorghum grain (SG) with Guazuma ulmifolia fruit (GU) in lambs&#8217; diets with alfalfa (AA) or maralfalfa (MA) on productive performance and digestibility. Four male Blackbelly sheep with a mean body weight (BW) of 35 kg, with ruminal cannula, were used for the determination of in vivo, in vitro and in situ digestibility. Twenty Pelibuey male lambs with a mean initial BW of 15 ± 1.5 kg were used under a completely randomized design in the productive performance trial. The percentage composition of experimental diets were as follow: Diet 1: 55 of MA, 20 of GU and 8 of SG; Diet 2: 55 of MA, 8 of GU and 20 of SG; Diet 3: 55 of AA, 20 of GU and 8 of SG and Diet 4: 55 of AA, 8 of GU and 20 of SG. Moreover, all diets contain sugar cane molasses (5%), canola meal (9%) and mineral mix (3%). There were no effect (p &gt; 0.05) of sorghum grain replacement on digestibility and productive performance. Nevertheless, these value were lower (p &lt; 0.05) with MA inclusion in diets. In conclusion, the sorghum grain can be replaced by Guazuma ulmifolia fruit up to 20% of the diets with low and high levels of fiber without effect on dry matter digestibility and productive performance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Alimentos energéticos]]></kwd>
<kwd lng="es"><![CDATA[árboles tropicales]]></kwd>
<kwd lng="es"><![CDATA[borregos de pelo]]></kwd>
<kwd lng="es"><![CDATA[digestibilidad]]></kwd>
<kwd lng="es"><![CDATA[FDN]]></kwd>
<kwd lng="en"><![CDATA[Energetic feeds]]></kwd>
<kwd lng="en"><![CDATA[digestibility]]></kwd>
<kwd lng="en"><![CDATA[NDF]]></kwd>
<kwd lng="en"><![CDATA[hair sheep]]></kwd>
<kwd lng="en"><![CDATA[tropical trees]]></kwd>
</kwd-group>
</article-meta>
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