<?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>0864-0394</journal-id>
<journal-title><![CDATA[Pastos y Forrajes]]></journal-title>
<abbrev-journal-title><![CDATA[Pastos y Forrajes]]></abbrev-journal-title>
<issn>0864-0394</issn>
<publisher>
<publisher-name><![CDATA[Estación Experimental de Pastos y Forrajes Indio Hatuey]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-03942022000100011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Indicadores del metabolismo gasoenergético de ayuno en ovinos Pelibuey en Cuba]]></article-title>
<article-title xml:lang="en"><![CDATA[Indicators of the gas-energy fasting metabolism in Pelibuey sheep in Cuba]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonseca Fuentes]]></surname>
<given-names><![CDATA[Norge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamayo-Ojea]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garcés-Sariol]]></surname>
<given-names><![CDATA[Rafael Orlando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonseca-Serrano]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrano-Torres]]></surname>
<given-names><![CDATA[Jorge Orlay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grizelj]]></surname>
<given-names><![CDATA[Juraj]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ministerio de Educación Superior Universidad de Granma ]]></institution>
<addr-line><![CDATA[Carretera de Manzanillo km. 17½, Peralejo, Apartado 21, Bayamo ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Investigaciones Agropecuarias Jorge Dimitrov  ]]></institution>
<addr-line><![CDATA[km. 12½, vía Manzanillo, Bayamo ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Ministerio de Educación Superior Universidad de Ciego de Ávila Máximo Gómez Báez ]]></institution>
<addr-line><![CDATA[Ciego de Ávila ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Zagreb. Trg Republike Hrvatske 14  ]]></institution>
<addr-line><![CDATA[Zagreb ]]></addr-line>
<country>Croacia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>45</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-03942022000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-03942022000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-03942022000100011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  Determinar algunos indicadores del metabolismo gasoenergético de ovinos Pelibuey en ayuno, sometidos a pastoreo.  Materiales y Métodos: La investigación se desarrolló en el Instituto de Investigaciones Jorge Dimitrov, en la provincia Granma, Cuba. Se utilizaron 75 ovinos, en pastoreo durante la etapa de crecimiento-ceba, a razón de 25 animales de los genotipos Bermejo, Blanco y Patrón invertido, respectivamente. Los animales se sometieron a inedia hasta 96 horas, para evaluar el cociente respiratorio y la producción de calor cada 24 horas. Se midió la frecuencia respiratoria, la cardiaca y la temperatura rectal.  Resultados:  La frecuencia respiratoria mostró un promedio de 63 respiraciones por minuto, influenciado por los indicadores climáticos que afectaron la zona de bienestar de los ovinos en pastoreo. La frecuencia cardiaca promedio fue de 75 latidos por minuto, valor que se consideró adecuado para ovinos en condiciones de pastoreo en clima tropical. El metabolismo basal se alcanzó a las 96 horas de ayuno. Se encontraron diferencias en el cociente respiratorio para Bermejo, Blanco y Patrón invertido (0,67; 0,61; 0,64, respectivamente). La producción de calor (KJ/kg w0.75/día) también mostró diferencias entre los genotipos (142,3; 129,4 y 139,4 para Bermejo, Blanco y Patrón invertido, respectivamente).  Conclusiones:  Los ovinos Pelibuey, sometidos a ayuno, alcanzaron el metabolismo basal a las 96 horas después de suspendida la alimentación, período en el que alcanzaron cocientes respiratorios propios de la degradación de las grasas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  To determine some indicators of the gas-energy metabolism of fasting Pelibuey sheep, subject to grazing.  Materials and Methods:  The research was conducted at the Jorge Dimitrov Research Institute, in the Granma province, Cuba. Seventy-five sheep were used, grazing during the growth-fattening stage, at a rate of 25 animals of the Bermejo, Blanco and Patrón invertido genotypes, respectively. The animals were subject to inedia for up to 96 hours, to evaluate the respiratory quotient and heat production every 24 hours. The respiratory rate, heart rate, and rectal temperature were measured.  Results:  The respiratory rate showed an average of 63 breaths per minute, influenced by climate indicators that affected the welfare zone of grazing sheep. The average heart rate was 75 beats per minute, a value that was considered adequate for sheep under grazing conditions in a tropical climate. Basal metabolism was reached at 96 hours of fasting. Differences were found in the respiratory quotient for Bermejo, Blanco and Patrón invertido (0,67; 0,61; 0,64, respectively). Heat production (KJ/kg w0,75/day) also showed differences among genotypes (142,3; 129,4 and 139,4 for Bermejo, Blanco and Patrón invertido, respectively).  Conclusions:  The Pelibuey sheep, subject to fasting, reached basal metabolism 96 hours after stopping feeding, period in which they reached respiratory quotients typical of fat degradation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[frecuencia cardíaca]]></kwd>
<kwd lng="es"><![CDATA[metabolismo]]></kwd>
<kwd lng="es"><![CDATA[pastoreo]]></kwd>
<kwd lng="en"><![CDATA[heart rate]]></kwd>
<kwd lng="en"><![CDATA[metabolism]]></kwd>
<kwd lng="en"><![CDATA[grazing]]></kwd>
</kwd-group>
</article-meta>
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