<?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>0122-0268</journal-id>
<journal-title><![CDATA[Revista MVZ Córdoba]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.MVZ Cordoba]]></abbrev-journal-title>
<issn>0122-0268</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Córdoba - Facultad de Medicina Veterinaria y Zootecnia.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-02682020000300046</article-id>
<article-id pub-id-type="doi">10.21897/rmvz.1821</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Concentraciones séricas de Beta-hidroxibutirato y su asociación con enfermedades posparto en bovinos de leche]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huertas-Molina]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán C]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palacio]]></surname>
<given-names><![CDATA[Luis Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zambrano-Varón]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olivera-Angel]]></surname>
<given-names><![CDATA[Martha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia Grupo de investigación Biogénesis ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA Centro de Investigación El Nus ]]></institution>
<addr-line><![CDATA[ Antioquia]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Bayer Animal Health  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional de Colombia Grupo de Reproducción Animal y Salud de Hato ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</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>25</volume>
<numero>3</numero>
<fpage>46</fpage>
<lpage>56</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-02682020000300046&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-02682020000300046&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-02682020000300046&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN   Objetivo. Determinar la prevalencia de cetosis bovina según las concentraciones séricas (mmol/Lt) de beta-hidroxibutirato (&#946;HB) y estimar su asociación con enfermedades del posparto temprano en vacas lecheras.  Materiales y métodos. Se llevó a cabo un estudio epidemiológico de corte transversal con información individual de los niveles sanguíneos de &#946;HB y presentación clínica de enfermedades puerperales de n=1149 animales; además se evaluó la eficiencia de la prueba como predictora de enfermedad posparto. Posteriormente, se realizó X  2 y un modelo de regresión logística final para explorar los factores asociados con hipercetonemia. La relación entre &#946;HB sanguíneo, la presentación de cetosis y la ocurrencia de enfermedades puerperales se calculó analizando Característica Operativa del Receptor (Receiver Operating Characteristic -ROC).  Resultados. Según los niveles de |3HB, la prevalencia de cetosis fue de 7.9%, cetosis clínica 0.6% y cetosis subclínica 7.3%. La prueba fue predictora de enfermedad puerperal (LR+ del 13.6). La condición corporal &#8805;3.5, número de partos igual a 2 y &#8805;3, la presentación de retención de placenta, fiebre de leche y la enfermedad posparto, son factores de riesgo de cetosis. El análisis de la curva ROC mostró que la medición de &#946;HB (&#8805;1.2 mmol/Lt) en sangre sirve para diagnosticar cetosis (p&lt;0.0001).  Conclusiones. La medición de niveles sanguíneos de &#946;B permitió determinar que la presentación de cetosis es baja, es una alerta no solamente para esta enfermedad sino para las enfermedades del posparto temprano. Los resultados de este estudio confirman lo reportado en estudios previos sobre los factores de riesgo de cetosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective. Determine the prevalence of bovine ketosis based on serum concentrations (mmol/Lt) of beta-hydroxybutyrate (&#946;HB) and estimate its association with early postpartum diseases in dairy cows.  Materials and methods. An epidemiological cross-sectional study was carried out with individual information on blood levels of &#946;HB and clinical presentation of puerperal diseases in 1149 animals; In addition, the efficiency of the test was evaluated as a predictor of postpartum disease. Subsequently, univariate analysis and a final logistic regression model were performed to explore the factors associated with hyperketonemia. The association between blood &#946;HB, the presentation of ketosis and the occurrence of puerperal diseases was calculated by analyzing the Receiver Operating Characteristic -ROC.  Results. According to &#946;HB levels, the prevalence of ketosis was 7.9%, clinical ketosis 0.6% and subclinical ketosis 7.3%. The test was a predictor of puerperal disease (LR+ of 13.6). Body condition score &#8805;3.5, number of births 2 and &#8805;3, presentation of retained fetal membranes, milk fever and postpartum disease, are risk factors for ketosis. The analysis of the ROC curve showed that the measurement of &#946;HB (&#8805;1.2 mmol/Lt) in blood serves to diagnose ketosis (p&lt;0.0001).  Conclusions. The measurement of &#946;HB blood levels allowed to determine that ketosis presentation is low, it is an alert not only for this disease but for early postpartum diseases. The results of this study confirm risk factors observed in previous studies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cetosis]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[hipercetonemia]]></kwd>
<kwd lng="es"><![CDATA[lactancia temprana]]></kwd>
<kwd lng="es"><![CDATA[Odds Ratio (Fuente: MeSH, National agricultural library)]]></kwd>
<kwd lng="en"><![CDATA[Ketosis]]></kwd>
<kwd lng="en"><![CDATA[risk factor]]></kwd>
<kwd lng="en"><![CDATA[hyperketonemia]]></kwd>
<kwd lng="en"><![CDATA[early lactation]]></kwd>
<kwd lng="en"><![CDATA[Odds Ratio (Fuente: MeSH, National agricultural library)]]></kwd>
</kwd-group>
</article-meta>
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