<?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>1900-9607</journal-id>
<journal-title><![CDATA[CES Medicina Veterinaria y Zootecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Ces. Med. Vet. Zootec.]]></abbrev-journal-title>
<issn>1900-9607</issn>
<publisher>
<publisher-name><![CDATA[Universidad CES]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1900-96072020000200023</article-id>
<article-id pub-id-type="doi">10.21615/cesmvz.15.2.2</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la edad de rebrote sobre el desarrollo morfológico y la composición química del pasto kikuyo (Cenchrus clandestinus) en el trópico alto colombiano]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of regrowth period on morphological development and chemical composition of kikuyu grass (Cenchrus clandestinus) in Colombian&#8217;s highlands]]></article-title>
<article-title xml:lang="pt"><![CDATA[Efeito da idade de rebrota no desenvolvimento morfológico e composição química do capim kikuyo (Cenchrus clandestinus) nos altos trópicos colombianos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avellaneda Avellaneda MSc]]></surname>
<given-names><![CDATA[Yesid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mancipe Muñoz]]></surname>
<given-names><![CDATA[Edgar Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Martínez MSc, PhD]]></surname>
<given-names><![CDATA[Juan de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria-Agrosavia  ]]></institution>
<addr-line><![CDATA[Cundinamarca ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>15</volume>
<numero>2</numero>
<fpage>23</fpage>
<lpage>37</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1900-96072020000200023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1900-96072020000200023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1900-96072020000200023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El conocimiento de la dinámica composicional y de crecimiento del pasto kikuyo (Cenchrus clandestinus) permite establecer estrategias de manejo para maximizar la producción animal. El objetivo de este trabajo fue evaluar el efecto de la edad de rebrote sobre la variables morfológicas, composicionales y productivas del pasto kikuyo en las cuencas lecheras Alto Chicamocha (AC), Sabana de Bogotá (SB) y Ubaté-Chiquinquirá (UC) durante las épocas de lluvia y sequía. Se seleccionaron dos fincas por cuenca y se evaluó el crecimiento del forraje a través de un muestreo longitudinal del kikuyo desde el día 7 al 70 de rebrote. En cada muestreo se determinó la altura de la planta, la longitud y el ancho de las hojas y el ancho del estolón. Además, se midió el rendimiento y la composición química del forraje. Los datos se analizaron como un diseño completo al azar con medidas repetidas (10 etapas de rebrote). La altura de la planta fue superior (p&lt;0,05) en época de lluvias a partir del día 14, 42 y 49 en AC, SB y UC, respectivamente. El número de hojas aumentó con la edad de rebrote (p&lt;0,05), independiente de la época en SB y UC. El rendimiento de forraje seco fue mayor (p&lt;0,05) en la época de lluvias, desde el día 42 en AC y UC y desde el 49 en SB. La proteína cruda disminuyó (p&lt;0,05) con la edad de la planta y presentó los mayores valores en la época de lluvias en las cuencas AC y SB. El rendimiento y la composición química del kikuyo fue afectada por la edad de rebrote y la época de corte, lo cual hace necesario ajustar los esquemas de alimentación de acuerdo con las características del forraje y el requerimiento nutricional de los animales en cada región.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Compositional and growth dynamics knowledge of Kikuyu grass (Cenchrus clandestinus) allows establishing strategies to maximize animal performance. The objective of this work was to evaluate the effect of the regrowth period on morphological, compositional, and productive variables of Kikuyu grass in Alto Chicamocha (AC), Bogotá savanna (SB) and Ubaté-Chiquinquirá (UC) dairying regions, during rainy and dry seasons. Two farms were selected per region and the forage growth was evaluated from 7 to 70 regrowth day. Plant height, leaf length and width, and stolon width were determined. Also, biomass production and chemical composition were defined. The data were analyzed as a randomized complete design with repeated measurements (10 regrowth stages). Plant height was higher (p &lt;0.05) during the rainy season from day 14, 42, and 49 in AC, SB, and UC, respectively. Leaf number increased (p&lt;0.05) during the forage regrowth, independently of the season in SB and UC. Dry matter production was higher (p &lt;0.05) in the rainy season, from day 42 in AC and UC, and 49 in SB. Crude protein decreased (p &lt;0.05) during the growth period and presented high values in the rainy season in AC and SB regions. The production and chemical composition of the Kikuyu grass was affected by regrowth age and season, which requires adjusting the feeding programs related to forage characteristics and animal nutrient requirements in each region.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O conhecimento da composição e da dinâmica de crescimento do capimkikuyo (Cenchrus clandestinus) permite estabelecer estratégias de manejo para maximizar a produção animal. O objetivo deste trabalho foi avaliar o efeito da idade de rebrota nas variáveis morfológicas, composicionais e produtivas do capim-kikuyo nas bacias leiteiras de Alto Chicamocha (AC), Sabana de Bogotá (SB) e Ubaté-Chiquinquirá (UC) durante a épocas de chuva e seca. Duas fazendas por bacia foram selecionadas e o crescimento da forragem foi avaliado por meio de uma amostragem longitudinal do kikuyu do 7º ao 70º dia de rebrota. Em cada amostragem, foram determinados a altura da planta, o comprimento e a largura das folhas e a largura do estolão. Além disso, foram medidos o rendimento e a composição química da forragem. Os dados foram analisados em um delineamento inteiramente casualizado com medidas repetidas (10 estágios de rebrota). A altura da planta foi maior (p &lt;0,05) no período chuvoso a partir dos dias 14, 42 e 49 no AC, SB e UC, respectivamente. O número de folhas aumentou com a idade de rebrota (p &lt;0,05), independente da estação do ano em SB e UC. A produção de forragem seca foi maior (p &lt;0,05) no período chuvoso, a partir do dia 42 no AC e UC e a partir do dia 49 no SB. A proteína bruta diminuiu (p &lt;0,05) com a idade da.planta e apresentou os maiores valores no período chuvoso nas bacias AC e SB. O rendimento e a composição química do kikuyo foram afetados pela idade de rebrota e época de corte, o que torna necessário ajustar os esquemas alimentares de acordo com as características da forragem e as exigências nutricionais dos animais de cada região.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Regrowth period]]></kwd>
<kwd lng="en"><![CDATA[grazing]]></kwd>
<kwd lng="en"><![CDATA[Pennisetum clandestinum]]></kwd>
<kwd lng="en"><![CDATA[grazing systems.]]></kwd>
<kwd lng="es"><![CDATA[Edad de rebrote]]></kwd>
<kwd lng="es"><![CDATA[pastoreo]]></kwd>
<kwd lng="es"><![CDATA[Pennisetum clandestinum]]></kwd>
<kwd lng="es"><![CDATA[sistemas pastoriles.]]></kwd>
<kwd lng="pt"><![CDATA[Idade de rebrota]]></kwd>
<kwd lng="pt"><![CDATA[pastejo]]></kwd>
<kwd lng="pt"><![CDATA[Pennisetum clandestinum]]></kwd>
<kwd lng="pt"><![CDATA[sistemas pastoris.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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