<?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>1692-3561</journal-id>
<journal-title><![CDATA[Biotecnología en el Sector Agropecuario y Agroindustrial]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Bio.Agro]]></abbrev-journal-title>
<issn>1692-3561</issn>
<publisher>
<publisher-name><![CDATA[Taller Editorial Universidad del Cauca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1692-35612020000200048</article-id>
<article-id pub-id-type="doi">10.18684/bsaa(18)48-59</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desarrollo de novillas BON x Cebú en un silvopastoril de Tithonia diversifolia, en Antioquia, Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Performance of heifers BON x Cebu in a silvopastoral of Tithonia diversifolia, in Antioquia, Colombia]]></article-title>
<article-title xml:lang="pt"><![CDATA[Desempenho de novilhas BON x Cebu em um silvipastoril de Tithonia diversifolia em Antioquia, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ARGÜELLO-RANGEL]]></surname>
<given-names><![CDATA[JERALDYN]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MAHECHA-LEDESMA]]></surname>
<given-names><![CDATA[LILIANA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ANGULO-ARIZALA]]></surname>
<given-names><![CDATA[JOAQUÍN]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ciencias Agrarias Grupo de Investigación en Ciencias Agrarias (GRICA)]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ciencias Agrarias Grupo de Investigación en Ciencias Agrarias (GRICA)]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ciencias Agrarias Grupo de Investigación en Ciencias Agrarias (GRICA)]]></institution>
<addr-line><![CDATA[Medellín ]]></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>
<volume>18</volume>
<numero>2</numero>
<fpage>48</fpage>
<lpage>59</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1692-35612020000200048&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1692-35612020000200048&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1692-35612020000200048&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La producción bovina en Colombia se caracteriza por presentar bajos indicadores de producción debido a la baja calidad de las pasturas y el manejo extensivo de las praderas. El objetivo de esta investigación fue evaluar el efecto de un silvopastoril de Tithonia diversifolia y Urochloa brizantha cv. Toledo asociado a Urochloa humidicola, sobre los parámetros productivos de novillas BON x Cebú. Se distribuyeron de manera aleatorizada, 24 novillas BON x Cebú de 15,81 ± 2,05 meses y 183,95 ± 33,45 kg de peso, en dos tratamientos, un monocultivo de Urochloa brizantha cv. Toledo y Urochloa humidicola, y el sistema silvopastoril de Tithonia diversifolia. Se estimó la producción de materia seca y el consumo de materia seca en cada tratamiento y se realizó evaluación del peso, ganancia de peso, altura a la cruz, perímetro torácico y longitud corporal de los animales, durante dos pastoreos. Se hallaron diferencias significativas a favor del sistema silvopastoril para la producción de materia seca, la ganancia de peso, el peso, y la altura a la cruz (p &#8804; 0,05). Se concluyó que los sistemas silvopastoriles son una alternativa para mejorar la oferta forrajera y, por consiguiente, el desarrollo productivo de novillas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Bovine production in Colombia is characterized for its low production indicators, because pastures are of low quality and the grasslands has an extensive management. The objective of this research was to evaluate the effect of a silvopastoral with Tithonia diversifolia, and Urochloa brizantha cv. Toledo associated with Urochloa humidicola, on the productive parameters of BON x Zebu heifers. 24 heifers BON x Zebu with an average age of 15,81 ± 2,05 months and 183,95 ± 33,45 kg of weight, were distributed randomly in two treatments, a monoculture with Urochloa brizantha cv. Toledo associated to Urochloa humidicola, and, the silvopastoral with Tithonia diversifolia. The dry matter production and the consumption was estimated in both treatments. Also, the weight, weight gain, body height, heart girth and body length were evaluated in the animals during two rotations. Significant differences were found in the silvopastoral system for the production of dry matter, weight gain, the weight, and body height (p &#8804; 0,05). It was concluded that silvopastoral systems are an alternative to improve the forage offer and the performance of heifers.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO A produção bovina na Colômbia é caracterizada por baixos indicadores de produção, devido à baixa qualidade das pastagens e ao amplo manejo das pastagens. O objetivo deste trabalho foi avaliar o efeito de um sistema silvipastoril de Tithonia diversifolia, Urochloa brizantha cv. Toledo consorciado com Urochloa humidicola, nas desempenho de novilhas BON x Zebu. 24 novilhas BON x Zebu com idade média de 15,81 ± 2,05 meses e 183,95 ± 33,45 kg de peso, em dois tratamentos, em monocultivo de Urochloa brizantha cv. Toledo e Urochloa humidicola, e o silvipastoril com Tithonia diversifolia. A massa de matéria seca e o consumo de matéria seca foi estimada, Da mesma forma, avaliação do peso, ganho de peso, altura ao garrote, perímetro torácico e comprimento do corpo em cada tratamento, durante duas rotações. Diferenças significativas foram encontradas a favor do sistema silvipastoril para a massa de matéria seca, o ganho de peso, o peso e a altura ao garrote apresentaram diferenças significativas (p &#8804; 0,05). Concluiu-se os sistemas silvipastoris são uma alternativa para melhorar a produção de forragem e, consequentemente, o desempenho de novilhas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arbustivas forrajeras]]></kwd>
<kwd lng="es"><![CDATA[Producción ganadera]]></kwd>
<kwd lng="es"><![CDATA[Sostenibilidad]]></kwd>
<kwd lng="es"><![CDATA[Trópico]]></kwd>
<kwd lng="en"><![CDATA[Forage shrubs]]></kwd>
<kwd lng="en"><![CDATA[Livestock production]]></kwd>
<kwd lng="en"><![CDATA[Sustainability]]></kwd>
<kwd lng="en"><![CDATA[Tropics]]></kwd>
<kwd lng="pt"><![CDATA[Arbustos forrageiros]]></kwd>
<kwd lng="pt"><![CDATA[Produção animal]]></kwd>
<kwd lng="pt"><![CDATA[Sustentabilidade]]></kwd>
<kwd lng="pt"><![CDATA[Trópico]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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