<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342016001203173</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Composición química y mineral de leucaena asociada con pasto estrella durante la estación de lluvias]]></article-title>
<article-title xml:lang="en"><![CDATA[Chemical and mineral composition of leucaena associated with star grass during the rainy season]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago Figueroa]]></surname>
<given-names><![CDATA[Itzel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara Bueno]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda Romero]]></surname>
<given-names><![CDATA[Luis Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huerta Bravo]]></surname>
<given-names><![CDATA[Maximino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Krishnamurthy]]></surname>
<given-names><![CDATA[Laksmi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-González]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo Ciencias en Innovación Ganadera ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo Departamento de Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>spe16</numero>
<fpage>3173</fpage>
<lpage>3183</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016001203173&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016001203173&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016001203173&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del presente estudio fue determinar la composición química y mineral de la leucaena (Leucaena leucocephala Lam. de Wit) y el pasto estrella (Cynodon nlemfuensis Vanderyst) asociados en un sistema silvopastoril intensivo a 35, 42, 49, 56, 63 y 70 días de edad de los rebrotes, durante la época de lluvias, en la región Huasteca potosina de México. Las variables a evaluar fueron los porcentajes de EE, PC, FDA, FDN, Ca, Mg, Na, K y P, relación Ca:P y ppm de Cu, Zn y Fe. Los resultados mostraron diferencias significativas (p&lt; 0.05) por efecto de la edad de los rebrotes para el contenido de FDN y Ca los cuales fueron mayores al día 49 mientras Na y P disminuyeron al incrementarse la edad de los rebrotes. Contrariamente, la concentración de FDA, Cu y Fe se incrementaron a mayor edad de los rebrotes (p&lt; 0.05). Hubo diferencias entre las especie forrajera (p&lt; 0.05) para la mayoría de las variables estudiadas, excepto para los minerales Na, K y Zn. Leucaena tuvo mayor contenido de EE, PC, Ca, Mg, Cu y Fe; pero el pasto estrella tuvo mayor contenido de FDN, FDA y relación Ca:P. La edad de los rebrotes interaccionó con las especies forrajeras para el contenido de FDN, Na, K y Zn. Se encontraron deficiencias de Cu, Zn y P en los forrajes estudiados. Se concluye que la asociación leucaena con el pasto estrella mejoró la composición química y mineral del follaje comestible.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The aim of this study was to determine the chemical and mineral composition of the leucaena (Leucaena leucocephala Lam. de Wit) and star grass (Cynodon nlemfuensis Vanderyst) associated in an intensive silvopastoral system 35, 42, 49, 56, 63 and 70 day old sprouts during the rainy season, in the Huasteca potosina region of Mexico. The variables evaluated were the percentage of EE, PC, FDA, FDN, Ca, Mg, Na, K and P, ratio Ca:P and ppm Cu, Zn and Fe. The results showed significant differences (p&lt; 0.05) by effect of age of suckers for the FDN and Ca which were higher at day 49 while Na and P decreased with increasing age of suckers. In contrast, the concentration of FDA, Cu and Fe increased with increasing age of the volunteers (p&lt; 0.05). There were differences between the forage species (p&lt; 0.05) for most of the variables studied, except for Na, K and Zn minerals. Leucaena had higher content of EE, PC, Ca, Mg, Cu and Fe; but the star grass had higher content of FDN, FDA and Ca:P ratio. The age of the volunteers interacted with forage species for content FDN, Na, K and Zn. The deficiencies Cu, Zn and P in forages studied were found. It is concluded that leucaena star grass association with improved chemical and mineral composition of edible foliage.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[especies forrajeras]]></kwd>
<kwd lng="es"><![CDATA[edad de los rebrotes]]></kwd>
<kwd lng="es"><![CDATA[forrajes tropicales]]></kwd>
<kwd lng="es"><![CDATA[sistema silvopastoril intensivo]]></kwd>
<kwd lng="en"><![CDATA[age of suckers]]></kwd>
<kwd lng="en"><![CDATA[forage species]]></kwd>
<kwd lng="en"><![CDATA[intensive silvopastoral system]]></kwd>
<kwd lng="en"><![CDATA[tropical forages]]></kwd>
</kwd-group>
</article-meta>
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