<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562025000100102</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v27.2276</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Implementation of rhAmp SNP genotyping for the detection of the B3GALNT2 gene mutation associated with congenital hydrocephalus in Friesian horses in southern Sonora]]></article-title>
<article-title xml:lang="es"><![CDATA[Implementación del genotipado rhAmp SNP para la detección de la mutación en el gen B3GALNT2 asociada a hidrocefalia congénita en caballos Friesian del sur de Sonora]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcaraz-González]]></surname>
<given-names><![CDATA[Karla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Borbolla-Hernández]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aragón-López]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Galaviz]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyna-Granados]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Nevárez]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Sonora Departamento de Ciencias Agronómicas y Veterinarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>27</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562025000100102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562025000100102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562025000100102&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Congenital hydrocephalus is a recessive genetic abnormal condition affecting Friesian horses, so the identification of healthy carrier animals is crucial to avoid inheriting such condition. Therefore, the objective of the present study was the detection of the B3GALNT2 gene mutation related to the presence of hydrocephalus, through the rhAmp SNP technique to identify healthy carrier horses. The study was performed in 4 locations in southern Sonora, Mexico. Blood samples were collected from 51 Friesian horses using EDTA tubes, which were centrifuged until the leuko-platelet layer was obtained. Subsequently, the TACOTM DNA extraction kit was used to obtain the DNA, which was processed by the rhAmp SNP assay to detect the mutation in the B3GALNT2 gene. A total of 7 (13.72 %) Friesian horses were found to be heterozygous carriers (C/T). In conclusion, the presence of the mutant allele was confirmed by the rhAmp SNP assay, which was proposed as an effective molecular technique for the detection of horses as carriers of genetic abnormal conditions.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La hidrocefalia congénita es una condición genética recesiva anormal que afecta a los caballos Friesian, por lo que la identificación de animales portadores sanos es crucial para evitar heredar dicha condición. Por ello, el objetivo del presente estudio fue la detección de la mutación en el gen B3GALNT2 relacionada con la presencia de hidrocefalia mediante la técnica de rhAmp SNP para identificar caballos portadores sanos. El estudio se realizó en 4 localidades del sur de Sonora, México. Se tomaron muestras de sangre de 51 caballos Friesian utilizando tubos con EDTA, los cuales fueron centrifugados hasta obtener la capa leuco-plaquetaria. Posteriormente, se utilizó el kit de extracción de ADN TACOTM para obtener el ADN, el cual fue procesado mediante el ensayo rhAmp SNP para detectar la mutación en el gen B3GALNT2. Un total de 7 (13.72 %) caballos Friesian resultaron ser portadores heterocigotos (C/T). En conclusión, se confirmó la presencia del alelo mutante mediante el ensayo rhAmp SNP, el cual es propuesto como una técnica molecular eficaz para la detección de caballos portadores de anomalías genéticas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hydrocephalus]]></kwd>
<kwd lng="en"><![CDATA[heritability]]></kwd>
<kwd lng="en"><![CDATA[rhAmp SNP]]></kwd>
<kwd lng="en"><![CDATA[recessive]]></kwd>
<kwd lng="en"><![CDATA[heterozygous]]></kwd>
<kwd lng="es"><![CDATA[hidrocefalia]]></kwd>
<kwd lng="es"><![CDATA[heredabilidad]]></kwd>
<kwd lng="es"><![CDATA[rhAmp SNP]]></kwd>
<kwd lng="es"><![CDATA[recesiva]]></kwd>
<kwd lng="es"><![CDATA[heterocigoto]]></kwd>
</kwd-group>
</article-meta>
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<publisher-name><![CDATA[Duxbury Press]]></publisher-name>
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<person-group person-group-type="author">
<name>
<surname><![CDATA[Sipma]]></surname>
<given-names><![CDATA[K.D.]]></given-names>
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<article-title xml:lang=""><![CDATA[Phenotypic characteristics of hydrocephalus in stillborn Friesian foals]]></article-title>
<source><![CDATA[Veterinary Pathology]]></source>
<year>2013</year>
<volume>50</volume>
<page-range>1037-42</page-range></nlm-citation>
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