<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952016000400429</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Concentración de compuestos fenólicos en fabáceas forrajeras tropicales en edad diferente del rebrote]]></article-title>
<article-title xml:lang="en"><![CDATA[Concentration of phenolic compounds in tropical forage fabaceae at different regrowth time]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Ferrer]]></surname>
<given-names><![CDATA[Lidia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolaños-Aguilar]]></surname>
<given-names><![CDATA[E. Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lagunes-Espinoza]]></surname>
<given-names><![CDATA[L. Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Juárez]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio-Arce]]></surname>
<given-names><![CDATA[M. Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Posgraduados Áreas de Ciencia Vegetal y Ciencia Animal Campus Tabasco]]></institution>
<addr-line><![CDATA[Cárdenas Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INIFAP Campo Experimental Huimanguillo ]]></institution>
<addr-line><![CDATA[ Tabasco]]></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>50</volume>
<numero>4</numero>
<fpage>429</fpage>
<lpage>440</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952016000400429&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952016000400429&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952016000400429&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las fabáceas son una opción para incrementar la disponibilidad de proteína en las praderas pero especies de la familia Fabaceae contienen compuestos fenólicos que, según su cantidad y tipo, benefician o perjudican la producción pecuaria. El objetivo del estudio fue determinar la concentración de compuestos fenólicos del rebrote de diferentes edades de Arachis pintoi, Stylosanthes guianensis, Clitoria ternatea y Pueraria phaseoloides. El estudio se realizó en un campo experimental del INIFAP-Tabasco, México, de marzo a agosto del año 2013, abarcando las épocas seca y lluviosa, y en cuatro edades del rebrote después del corte de uniformidad: 21, 42, 63 y 84 d. Las variables evaluadas fueron las concentraciones de cinco tipos de compuestos fenólicos: polifenoles totales (PFT), no taninos (FNT), taninos condensados (TC) hidrolizables (TH) y totales (TT). Dieciséis tratamientos se evaluaron en un diseño de parcelas divididas completamente al azar con tres repeticiones, la especie como parcela mayor, y la edad del rebrote como parcela menor. Las comparaciones entre medias se realizaron con la prueba de Tukey (p&#8804;0.05). La interacción especie x edad del rebrote se observó en los cinco tipos de compuestos. Las concentraciones mayores de compuestos fenólicos (CF) se obtuvieron en todas las especies a los 42 d del rebrote. Clitoria ternatea presentó las concentraciones mayores en los meses sin lluvias (155.4, 40.1, 16.9, 98.4 y 115.3 g kg-1 MS de PFT, FNT, TC y TH) y en los lluviosos (121.7, 39.6, 20.1, 61.9 y 82.0 g kg-1 MS de PFT, FNT, TC y TH). En contraste, S. guianensis presentó las concentraciones menores de CF. La concentración de TC varío entre especies, en los meses sin lluvias de 4.62 (Sytlo) a 20.21 (Kudzú) g kg-1 MS y en meses lluviosos de 3.66 (Stylo) a 20.10 (Clitoria) g kg-1 MS. Ninguna especie alcanzó el nivel tóxico de 60 g kg-1 MS de TC. Los resultados mostraron que la concentración de CT varió entre las especie y con la edad de rebrote. Entre especies, las concentraciones mayores se observaron en C. ternatea y las menores en S. guianensis. La interacción especie por edad del rebrote determina la concentración de compuestos fenólicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Fabaceae are an option to increase the availability of protein in the prairies, but species of the Fabaceae family contain phenolic compounds, which depending on their number and type, benefit or harm livestock production. The aim of the study was to determine the concentration of phenolic regrowvth compounds of different ages of Arachis pintoi, Stylosanthes guianensis, Clitoria ternatea and Pueraria phaseoloides. The study was carried out in an experimental field, INIFAP-Tabasco, Mexico, from March to August 2013, covering the dry and rainy seasons, and in four ages of regrowth after uniformity cutting: 21, 42, 63 and 84 d. The variables evaluated were the concentrations of five types of phenolic compounds: total polyphenols (PFT), no tannins (FNT), condensed tannins (TC) hydrolysable (TH) and total tannins (TT). Sixteen treatments were evaluated in a design of completely randomly divided plots with three replications, the species as main plot, and regrowth age as a minor plot. Comparisons between means were performed using the Tukey test (p&#8804;0.05). We observed the interaction species x age of regrowvth in the five types of compounds. The highest concentrations of phenolic compounds (CF) were obtained in all species at 42 d of regrowth. Clitoria ternatea presents the highest concentrations in the months without rain (155.4, 40.1, 16.9, 98.4 and 115.3 g kg-1 MS of PFT, FNT, TC and TH) and rainy (121.7, 39.6, 20.1, 61.9 and 82.0 g kg-1 MS of PFT, FNT, TC and TH). In contrast, S. guianensis presented lower concentrations of CF. The TC concentration varied between species, in the months without rain from 4.62 (Stylo) to 20.21 (Kudzú) g kg-1 MS and in rainy months from 3.66 (Stylo) to 20.10 (Clitoria) g kg-1 MS. No species reached the toxic level of 60 g kg-1 MS of TC. Results showed that the concentration of CT varied among species and age of regrowth. Among species, the highest concentrations were observed in C. ternatea and the lowest in S. guianensis. The interaction species-regrowvth age determined the concentration of phenolic compounds.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arachis pintoi]]></kwd>
<kwd lng="es"><![CDATA[Stylosanthes guianensis]]></kwd>
<kwd lng="es"><![CDATA[Pueraria phaseoloides]]></kwd>
<kwd lng="es"><![CDATA[Clitoria ternatea]]></kwd>
<kwd lng="es"><![CDATA[fabáceas]]></kwd>
<kwd lng="es"><![CDATA[taninos condensados]]></kwd>
<kwd lng="en"><![CDATA[Arachis pintoi]]></kwd>
<kwd lng="en"><![CDATA[Stylosanthes guianensis]]></kwd>
<kwd lng="en"><![CDATA[Pueraria phaseoloides]]></kwd>
<kwd lng="en"><![CDATA[Clitoria ternatea]]></kwd>
<kwd lng="en"><![CDATA[fabaceae]]></kwd>
<kwd lng="en"><![CDATA[condensed tannins]]></kwd>
</kwd-group>
</article-meta>
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