<?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>2448-6132</journal-id>
<journal-title><![CDATA[Abanico veterinario]]></journal-title>
<abbrev-journal-title><![CDATA[Abanico vet]]></abbrev-journal-title>
<issn>2448-6132</issn>
<publisher>
<publisher-name><![CDATA[Sergio Martínez González]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-61322020000100127</article-id>
<article-id pub-id-type="doi">10.21929/abavet2020.33</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sincronización de estros en ovejas Pelibuey utilizando CIDR y diferentes dosis de eCG]]></article-title>
<article-title xml:lang="en"><![CDATA[Estrous synchronization of Pelibuey ewes, using CIDR and different doses of eCG]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa-Martínez]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montiel-Olguín]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<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[Jiménez-Severiano]]></surname>
<given-names><![CDATA[Héctor]]></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  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>10</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-61322020000100127&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-61322020000100127&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-61322020000100127&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En la raza ovina Pelibuey, no está establecida completamente la dosis de gonadotropina coriónica equina (eCG) a emplear en protocolos de sincronización de estros. El objetivo del estudio fue analizar el efecto de dos diferentes dosis de eCG, incluidas en protocolos de sincronización de estros basados en progestágenos, sobre la respuesta reproductiva de ovejas Pelibuey. Para ello, 28 y 24 ovejas durante dos años consecutivos, fueron sometidas a un protocolo de sincronización; el primer grupo (BAJA) recibió un CIDR durante siete días y a su retiro se administró 0.125 mg de Cloprostenol y eCG a una dosis i.m. de 300 U. El segundo grupo (ALTA) recibió el mismo protocolo con una modificación, el empleo de una dosis de 400 U de eCG. Para evaluar las variables obtenidas, se realizó la prueba exacta de Fisher (datos en porcentaje) o análisis de varianza. No existieron diferencias (P&gt;0.05) entre grupos para el porcentaje de ovejas en estro (92.31%), la tasa de concepción total (82.69%) y de las ovejas con estro sincronizado (87.50%). Adicionalmente, el inicio del estro (47.75±1.43 h) y la prolificidad (1.86 crías/parto) fue similar (P&gt;0.05) entre grupos. En conclusión, los protocolos de sincronización de estros para ovejas Pelibuey que utilizan CIDR por siete días, pueden emplear eCG a una dosis de al menos 300 U, sin afectar sus indicadores reproductivos asociados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In the Pelibuey breed, the dose of equine chorionic gonadotropin (eCG) used in the estrous synchronization is not fully established. The objective of this study was to analyze the effect of two different doses of eCG included in progestagens-based estrous synchronization protocols, on the reproductive response of Pelibuey ewes. For this reason, 28 and 24 ewes during two consecutive years were submitted to a synchronization protocol. The first group (LOW) considered the use of a CIDR for a 7-day period, followed by an i.m. administration of 0.125 mg of Cloprostenol and a dose of 300 U of eCG. The second group (HIGH) received the same protocol with a modification, the use of a 400 U of eCG. To evaluate the response variables, were Fisher exact test and analysis of variance considered. There was no difference (P&gt;0.05) between groups for the percentage of estrous ewes (92.31%), total conception rate (82.69%) and the conception rate of ewes with synchronized estrous (87.5%). Additionally, the estrous beginning (47.75±1.43 h) and prolificacy (1.86 lambs/partum) was similar between groups. In conclusion, the estrous synchronization protocols for Pelibuey ewes using CIDR for a 7-day period can use eCG in a dose of 300 U without effects on their associated reproductive performance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ovinos]]></kwd>
<kwd lng="es"><![CDATA[gonadotropina coriónica equina]]></kwd>
<kwd lng="es"><![CDATA[tasa de concepción]]></kwd>
<kwd lng="en"><![CDATA[ovine]]></kwd>
<kwd lng="en"><![CDATA[equine chorionic gonadotropin]]></kwd>
<kwd lng="en"><![CDATA[conception rate]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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