<?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>0122-9354</journal-id>
<journal-title><![CDATA[Revista de Medicina Veterinaria]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Med. Vet.]]></abbrev-journal-title>
<issn>0122-9354</issn>
<publisher>
<publisher-name><![CDATA[Universidad de La Salle]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-93542020000200071</article-id>
<article-id pub-id-type="doi">10.19052/mv.vol1.iss41.7</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del componente arbóreo sobre la dinámica de crecimiento y calidad nutricional de una pradera mixta en trópico alto]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of tree component on the growth dynamics and nutritional quality of a mixed grassland in the high tropic]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navas Panadero]]></surname>
<given-names><![CDATA[Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aragón Henao]]></surname>
<given-names><![CDATA[Laura Fernanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Triana Valenzuela]]></surname>
<given-names><![CDATA[Jorge Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de La Salle Facultad de Ciencias Agropecuaria ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de La Salle  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de La Salle Facultad de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<numero>41</numero>
<fpage>71</fpage>
<lpage>82</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-93542020000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-93542020000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-93542020000200071&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los sistemas ganaderos se basan en el monocultivo de gramíneas. El pastoreo comúnmente no tiene en cuenta la fisiología de las especies, lo que afecta la persistencia y calidad del forraje. Los sistemas silvopastoriles favorecen la producción y calidad del forraje. Por eso es importante conocer la dinámica de crecimiento de la pastura para determinar el momento óptimo de pastoreo. Con base en esto, el objetivo de esta investigación fue evaluar el efecto de Acacia melanoxilum sobre la producción y calidad nutricional de una pradera mixta en trópico alto. La investigación se desarrolló en el Centro de Investigación y Capacitación &#8220;Santa María del Puyón&#8221;, ubicado en Sopo, Colombia. Se evaluó una pradera de Cenchrus clandestinum y Lolium perenne, en pasturas en callejones se establecieron parcelas bajo y fuera de los árboles, y se evaluó el crecimiento (15, 30, 45 y 60 días) durante nueve meses. Luego se determinaron las propiedades fisicoquímicas del suelo, la altura sin disturbar del pasto, el número de hojas, el índice de área foliar y la producción y calidad de forraje. Después se utilizó un diseño al azar, y se realizó estadística descriptiva y análisis de varianza, mediante el programa Infostat® para el análisis de datos. Bajo los árboles se observó mayor pH, materia orgánica, minerales y capacidad de intercambio catiónico, mayor altura sin disturbar (p = 0,0001), diferencias en producción de forraje verde (p = 0,0128), composición botánica y mayor proteína cruda (p = 0,0061). Los árboles de A. melanoxilum favorecen el crecimiento y la calidad nutricional de praderas mixtas en trópico alto.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Livestock systems are based on the monoculture of grasses, grazing does not usually take into account the physiology of the species, this affects the persistence and quality of the forage. Silvopastoral systems favor forage production and quality, it is important to know the growth dynamics of the pasture to determine the optimal grazing moment. The objective of this work was to evaluate the effect of Acacia melanoxilum on the production and nutritional quality of a mixed meadow in the high tropics. The research was carried out at the &#8220;Santa María del Puyón&#8221; Research and Training Center, located in Sopo, Colombia. A meadow of Cenchrus clandestinum and Lolium perenne was evaluated, in alley pastures, plots were established under and outside the trees, the growth was evaluated (15, 30, 45 and 60 days) for nine months. The physicochemical properties of the soil, undisturbed height, number of leaves, leaf area index, production and quality of forage were determined. A random design was used, descriptive statistics and analysis of variance were performed. The Infostat® program was used for data analysis. Under the trees there is a higher ph, organic matter, minerals and cation exchange capacity, higher undisturbed height (p = 0.0001), differences in green forage production (p = 0.0128), botanical composition, and higher protein crude (p = 0.0061). A. Melanoxilum trees favor the growth and nutritional quality of mixed grasslands in the high tropics.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[alimentación]]></kwd>
<kwd lng="es"><![CDATA[ganadería]]></kwd>
<kwd lng="es"><![CDATA[pasturas]]></kwd>
<kwd lng="es"><![CDATA[sistemas silvopastoriles]]></kwd>
<kwd lng="en"><![CDATA[feeding]]></kwd>
<kwd lng="en"><![CDATA[livestock]]></kwd>
<kwd lng="en"><![CDATA[pastures]]></kwd>
<kwd lng="en"><![CDATA[silvopastoral systems]]></kwd>
</kwd-group>
</article-meta>
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