<?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>S2007-11242017000300225</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v8i3.4498</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización de la respuesta ovárica a la superovulación en bovino Criollo Coreño utilizando dosis reducidas de FSH]]></article-title>
<article-title xml:lang="en"><![CDATA[Characterization of the ovarian response to superovulation in Creole Coreño cattle using reduced doses of FSH]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villaseñor González]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torre Sánchez]]></surname>
<given-names><![CDATA[José Fernando de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Velázquez]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez Gallardo]]></surname>
<given-names><![CDATA[Horacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Reynozo]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palacios Fránquez]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Polanco Sojo]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montaño Bermúdez]]></surname>
<given-names><![CDATA[Moisés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Centro Altos de Jalisco ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Centro Nacional de Recursos Genéticos ]]></institution>
<addr-line><![CDATA[Tepatitlán Jalisco]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Sitio Experimental "El Verdineño" ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,aff4  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Centro Nacional de Investigación Disciplinaria en Fisiología y Mejoramiento Animal ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>3</numero>
<fpage>225</fpage>
<lpage>232</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242017000300225&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242017000300225&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242017000300225&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: Para evaluar la respuesta ovárica a la superovulación con dosis reducidas de la hormona folículo estimulante (FSH) en bovinos Criollo Coreño, se realizaron dos experimentos en el Sitio Experimental El Verdineño del INIFAP ubicado en Nayarit, México. Se utilizaron 12 vacas de 12.4 ± 2.9 años (Exp 1) y seis vaquillas de 3.0 ± 0.3 años (Exp 2). Se aplicaron tres tratamientos a cada hembra: 280 mg (T1), 200 mg (T2) y 140 mg (T3) de FSH. Las variables evaluadas fueron número de embriones transferibles (ET), número de corpúsculos recuperados (CR)=(embriones + óvulos no fertilizados), número de embriones no transferibles (ENT), número de cuerpos lúteos (CL), número de óvulos no fertilizados (ONF), volumen ovárico (VO), concentración sérica de progesterona (P4), porcentaje de fertilización (%F)=((ET+ENT)*100)/CR) y porcentaje de recuperación (%R)=CL*100/CR. Se utilizó un diseño experimental crossover simple balanceado. La información se analizó con el procedimiento GLM de SAS. El modelo estadístico incluyó los efectos de tratamiento (T1, T2 y T3), vaquilla/vaca (6 y 12) y período (3 períodos). En el Exp 1 se detectaron diferencias (P&lt;0.05) entre tratamientos para CR y ONF favorables a T1. No se encontraron diferencias (P&gt;0.05) entre tratamientos para ET, ENT, CL, VO, P4, %F o %R. En el Exp 2 no se detectaron diferencias (P&gt;0.05) entre tratamientos para ninguna de las variables. Es factible utilizar dosis reducidas de FSH para la superovulación en vaquillas Criollo Coreño sin afectar la respuesta a la superovulación o la producción de embriones.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: To evaluate the ovarian response to superovulation using reduced doses of FSH in Criollo Coreño cattle two experiments were conducted at the Experimental Station &#8220;El Verdineño&#8221; (INIFAP) located in Nayarit, México. Twelve (12) cows of 12.4 ± 2.9 yr old (Exp 1) and six heifers of 3.0 ± 0.3 yr old (Exp 2) were used. Three treatments were assigned to each female consisting of 280 mg (T1), 200 mg (T2) and 140 mg (T3) of FSH, so that all females received all treatments. The response variables were transferable embryos (ET), corpuscles retrieved (CR) = (embryos+non fertilized ova), degenerated embryos (ENT), number of corpora lutea (CL), non-fertilized ova (ONF), ovarian volume (VO), serum progesterone (P4), fertilization rate (%F) = ((ET+ENT)*100)/CR) and percent recovery (%R)=CL*100/CR. A cross-over balanced experimental design was used. Analyses were carried out with the GLM procedure of SAS. The statistical model included the fixed effects of treatment (T1, T2 and T3), animal (twelve or six) and period (three periods). In Exp 1 differences among treatments (P&lt;0.05) favorable to T1 were detected for CR and ONF. No differences were found (P&gt;0.05) among treatments for ET, ENT, CL, VO, P4, %F or %R. In Exp 2 no differences were detected (P&gt;0.05) among treatments for any of the variables. It is feasible to use reduced doses of FSH for the superovulation of Criollo Coreño heifers without affecting the response to superovulation or to embryo production.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Bovinos]]></kwd>
<kwd lng="es"><![CDATA[Superovulación]]></kwd>
<kwd lng="es"><![CDATA[Embriones transferibles]]></kwd>
<kwd lng="es"><![CDATA[Criollo Coreño]]></kwd>
<kwd lng="en"><![CDATA[Cattle]]></kwd>
<kwd lng="en"><![CDATA[Superovulation]]></kwd>
<kwd lng="en"><![CDATA[Transferable embryos]]></kwd>
<kwd lng="en"><![CDATA[Criollo Coreño]]></kwd>
</kwd-group>
</article-meta>
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