<?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>S2448-61322022000100112</article-id>
<article-id pub-id-type="doi">10.21929/abavet2022.15</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del coumestrol sobre el epidídimo de perros adultos]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of coumestrol on the epididymis of adult dogs]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[James-Romero]]></surname>
<given-names><![CDATA[Artemisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Rivero]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Barragán]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-Setién]]></surname>
<given-names><![CDATA[Alvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Martínez]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-61322022000100112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-61322022000100112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-61322022000100112&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La preocupación de la sobrepoblación canina se relaciona con zoonosis como la rabia, la cual es responsable del 99% de los casos de rabia humana, causante de la muerte de aproximadamente 59,000 personas al año. La esterilización quirúrgica es un método de control eficaz, costoso e invasivo siendo su impacto limitado. Los efectos de los fitoestrógenos en la actividad reproductiva se han estudiado comúnmente en hembras, y un número limitado en machos. Por lo anterior, el objetivo de este estudio fue conocer el efecto de la administración subcutánea de coumestrol en la actividad gonadal de perros adultos como alternativa para su control reproductivo. Se determinaron los parámetros de evaluación seminal básica, la estructura del epidídimo mediante ecografía, características histológicas, así como la presencia del coumestrol mediante fluorescencia y los niveles séricos de testosterona y estrógenos. La administración de coumestrol durante cinco semanas redujo la producción espermática, y evidenció cambios en la eco densidad y celularidad del epidídimo, asociados a las concentraciones séricas de estradiol y testosterona. Por lo que, se concluye que el coumestrol administrado vía subcutánea tiene un efecto estrogénico que puede utilizarse como un método no invasivo para ayudar a controlar la fertilidad de perros adultos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The concern of canine overpopulation is related to zoonoses such as rabies, which is responsible for 99% of human rabies cases, causing the death of approximately 59,000 people per year. Surgical sterilization is an effective, costly and invasive control method with limited impact. The effects of phytoestrogens on reproductive activity have been commonly studied in females and a limited number in males. Therefore, the objective of this study was to know the effect of subcutaneous administration of coumestrol on the gonadal activity of adult dogs as an alternative for their reproductive control. Basic seminal evaluation parameters, epididymal structure by ultrasonography, histological characteristics, as well as the presence of coumestrol by fluorescence and serum levels of testosterone and estrogens were determined. The administration of coumestrol for five weeks reduced sperm production, and evidenced changes in the echodensity and cellularity of the epididymis, associated with serum concentrations of estradiol and testosterone. Therefore, it is concluded that coumestrol administered subcutaneously has an estrogenic effect that can be used as a non-invasive method to help control fertility in adult dogs.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[epidídimo]]></kwd>
<kwd lng="es"><![CDATA[espermatozoides]]></kwd>
<kwd lng="es"><![CDATA[estrógenos]]></kwd>
<kwd lng="es"><![CDATA[fitoestrógenos]]></kwd>
<kwd lng="es"><![CDATA[testículo]]></kwd>
<kwd lng="es"><![CDATA[perro]]></kwd>
<kwd lng="es"><![CDATA[control reproductivo]]></kwd>
<kwd lng="en"><![CDATA[epididymis]]></kwd>
<kwd lng="en"><![CDATA[spermatozoa]]></kwd>
<kwd lng="en"><![CDATA[estrogens]]></kwd>
<kwd lng="en"><![CDATA[phytoestrogens]]></kwd>
<kwd lng="en"><![CDATA[testis]]></kwd>
<kwd lng="en"><![CDATA[dog]]></kwd>
<kwd lng="en"><![CDATA[reproductive control]]></kwd>
</kwd-group>
</article-meta>
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