<?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>2007-1124</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. pecuarias]]></abbrev-journal-title>
<issn>2007-1124</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11242020000300884</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v11i3.5157</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Crecimiento de corderos y productividad en ovejas Pelibuey mantenidas bajo condiciones tropicales de producción]]></article-title>
<article-title xml:lang="en"><![CDATA[Lamb growth and ewe productivity in Pelibuey sheep under tropical conditions]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Chávez]]></surname>
<given-names><![CDATA[Carolina Atenea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Palomera]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Macías-Cruz]]></surname>
<given-names><![CDATA[Ulises]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Segura-Correa]]></surname>
<given-names><![CDATA[José Candelario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ojeda-Robertos]]></surname>
<given-names><![CDATA[Nadia Florencia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peralta-Torres]]></surname>
<given-names><![CDATA[Jorge Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chay-Canúl]]></surname>
<given-names><![CDATA[Alfonso Juventino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez Auto&#769;moma de Tabasco División Académica de Ciencias Agropecuarias, Laboratorio de Reproducción y Genética Animal ]]></institution>
<addr-line><![CDATA[Villahermosa Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Valle de Mexicali Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Yucatán Campus de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>3</numero>
<fpage>884</fpage>
<lpage>893</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242020000300884&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242020000300884&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242020000300884&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo fue evaluar los efectos de época y año de nacimiento, tipo de parto, sexo y número de parto sobre el crecimiento predestete y la productividad de las ovejas en ovinos de raza Pelibuey que producen bajo un sistema semi-extensivo en el trópico húmedo de México. Se usaron datos de 323 ovejas Pelibuey a partir de registros de producción de 2011-2017. Se evaluaron los pesos al nacimiento (PN) y al destete (PD, a 60 d), así como los pesos de camada al destete (PCD). Adicionalmente, se evaluó prolificidad, mortalidad hasta el destete y kilos de cordero producido por oveja en un ciclo de 240 días (PC240d). Todos los factores afectaron (P&#8804;0.05) las variables de respuesta. Los corderos procedentes de partos múltiples tuvieron menor (P&lt;0.05) PN y PD, pero mayor (P&lt;0.05) PCD, PC240d y mortalidad que los corderos procedentes de partos simples. Los corderos nacidos en época de seca tuvieron mayores (P&lt;0.05) PN y PD, mientras que las ovejas tuvieron mayores PCD y PC240d, comparado con otras épocas del año. Las ovejas primíparas tuvieron corderos más livianos (P&lt;0.05) al nacimiento y al destete, así como menor (P&lt;0.05) prolificidad, PCD y PC240d que las ovejas multíparas (&#8805;3 partos). El año de nacimiento afectó (P&lt;0.05) PN, PD, tasa de mortalidad y características de productividad. En conclusión, se observó un mejor desempeño en el crecimiento predestete para corderos Pelibuey nacidos de ovejas multíparas y con parto simple en la época de seca. Sin embargo, la productividad de la oveja fue mejor con la presencia de partos dobles, en tiempo de sequía, y con el aumento en número de partos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Preweaning growth of lambs and ewe productivity are vital indicators of sheep production system success. An evaluation was done of the effects of birth season and year, birth type, sex and parturition number on preweaning growth and ewe productivity in Pelibuey sheep in a semi-extensive system in the humid tropics of Mexico. Data were from the production records of 323 ewes over a 7-yr period (2011-2017). Birth weight (BW), weaning weight (WW, at 60 d) and litter weight at weaning (LWW) were evaluated. Other evaluated factors included ewe prolificacy, preweaning mortality and lamb weight per ewe in a 240-d cycle (LW240d). All the factors affected (P&#8804;0.05) the response variables. Lambs from multiple births had lower (P&lt;0.05) BW and WW, but higher (P&lt;0.05) LWW, LW240d, and mortality than lambs from single births. Lambs born in the dry season had higher (P&lt;0.05) BW and WW, and ewes had higher LWW and LW240d, than in other seasons. Compared to multiparous ewes (&#8805;3 parturition), primiparous ewes had lighter lambs (P&lt;0.05) at birth and weaning, as well as lower (P&lt;0.05) prolificacy, LWW and LW240d. Birth year affected (P&lt;0.05) BW, WW, mortality and productivity characteristics. Preweaning growth performance was best in lambs born from multiparous sheep with a single parturition in the dry season. However, ewe productivity was highest in the dry season in multiparous ewes with two parturitions a year.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ovino de pelo]]></kwd>
<kwd lng="es"><![CDATA[Peso al nacimiento]]></kwd>
<kwd lng="es"><![CDATA[Crecimiento pre-destete]]></kwd>
<kwd lng="es"><![CDATA[Corderos]]></kwd>
<kwd lng="en"><![CDATA[Hair sheep]]></kwd>
<kwd lng="en"><![CDATA[Birth weight]]></kwd>
<kwd lng="en"><![CDATA[Preweaning growth]]></kwd>
<kwd lng="en"><![CDATA[Lambs]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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