<?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>2071-0054</journal-id>
<journal-title><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cie Téc Agr]]></abbrev-journal-title>
<issn>2071-0054</issn>
<publisher>
<publisher-name><![CDATA[Universidad Agraria de La Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2071-00542019000300001</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Energy Costs of Belarus 510 Tractor and JF-50 Forage Chopper]]></article-title>
<article-title xml:lang="es"><![CDATA[Costos energéticos del tractor Belarus 510 y picadora de forraje JF-50]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés-Hernández]]></surname>
<given-names><![CDATA[Pedro A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chuairey]]></surname>
<given-names><![CDATA[Carmen Maria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Águila]]></surname>
<given-names><![CDATA[María Victoria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de las Cuevas-Milán]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Quintana]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Gómez]]></surname>
<given-names><![CDATA[Tamara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Agraria de La Habana Facultad de Ciencias Técnicas ]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ Texcoco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>28</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2071-00542019000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2071-00542019000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2071-00542019000300001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This investigation is part of the studies carried out by the Faculty of Technical Sciences, the Agricultural Mechanization Center (CEMA) of the Agrarian University of Havana (UNAH) and the Institute of Animal Science (ICA), on the evaluation of agricultural assemblies for the production of animal feed. It was developed with the objective of determining the energy costs of the Russian BELARUS 510 Tractor and of the Brazilian JF-50 forage chopper. It is determined that the total energy costs depend, to a greater extent, on the energy sequestered in fuel (ESc), with a value of 103,73 MJ/h and 53% as the highest value. The energy sequestered in lubricants and filters (ESl) represented the lowest dependency with a value of 5,19 MJh, being 2,65% the lowest value. Total hourly energy costs (EST) amount to 195,48 MJ/h and energy costs total per unit mass processed (ESt) to 365 MJ/t.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Como parte de los estudios realizados por la Facultad de Ciencias Técnicas, el Centro de Mecanización Agropecuaria (CEMA) de la Universidad Agraria de la Habana (UNAH) y el Instituto de Ciencia Animal (ICA), sobre la evaluación de conjuntos agrícolas para la producción de alimento animal, se desarrolló esta investigación cuyo objetivo consiste en determinar los costos energéticos del Tractor BELARUS 510 de origen ruso y la Picadora de Forraje JF-50 de origen brasileño. Se determina que los costos energéticos totales dependen en mayor medida de la energía secuestrada en combustible (ESc) con un valor de 103,73 MJ/h, siendo la de mayor porcentaje con 53% y la energía secuestrada en lubricantes y filtros (ESl) en menor medida con un valor de 5,19 MJ/h, siendo la de menor porcentaje con 2,65%, los costos energéticos horarios totales (EST) ascienden a 195,48 MJ/h y los costos energéticos totales por unidad de masa procesada (ESt) a 365 MJ/t.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[costs]]></kwd>
<kwd lng="en"><![CDATA[sequestered energy]]></kwd>
<kwd lng="en"><![CDATA[fuel]]></kwd>
<kwd lng="es"><![CDATA[costos]]></kwd>
<kwd lng="es"><![CDATA[energía secuestrada]]></kwd>
<kwd lng="es"><![CDATA[combustible]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[PÉREZ]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis de la caña de azúcar como alimento para el ganado]]></article-title>
<source><![CDATA[Revista Pre-Till de la Universidad Piloto de Colombia]]></source>
<year>2012</year>
<volume>10</volume>
<numero>26</numero>
<issue>26</issue>
<page-range>59-74</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
