<?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>1794-4449</journal-id>
<journal-title><![CDATA[Revista Lasallista de Investigación]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Lasallista Investig.]]></abbrev-journal-title>
<issn>1794-4449</issn>
<publisher>
<publisher-name><![CDATA[Corporación Universitaria Lasallista]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-44492020000200077</article-id>
<article-id pub-id-type="doi">10.22507/rli.v17n2a6</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Indicadores de bioquímica sanguínea y perfil hormonal en vacas suplementadas con Trébol rojo (Trifolium pratense)]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of the consumption of red clover (trifolium pratense) on the blood profile in dairy cows]]></article-title>
<article-title xml:lang="pt"><![CDATA[Avaliação do consumo de trevovermelho (trifolium pratense) no perfil sanguíneo em vacas leiteiras]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Molano]]></surname>
<given-names><![CDATA[Carlos Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Niño-Monroy]]></surname>
<given-names><![CDATA[Laura Estefanía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pulido-Suárez]]></surname>
<given-names><![CDATA[Néstor Julián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UPTC Facultad de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,aff2  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></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>17</volume>
<numero>2</numero>
<fpage>77</fpage>
<lpage>87</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-44492020000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-44492020000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-44492020000200077&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: el trébol rojo es una leguminosa usada en la nutrición bovina por su aporte de proteína, actualmente se conoce que produce naturalmente metabolitos secundarios que son similares a los estrógenos, ocasionando alteraciones en la capacidad reproductiva de los animales.  Objetivo: determinar los efectos del consumo de Trébol rojo sobre el perfil sanguíneo en vacas lecheras en la Granja Tunguavita de la UPTC.  Materiales y Métodos: se seleccionaron 32 animales con características similares, se dividieron aleatoriamente en cuatro tratamientos: G1: 8 vacas con suplemento de trébol rojo según sus requerimientos, G2: 8 vacas con suplemento de trébol rojo 25% adicional, G3: 8 vacas con suplemento de trébol rojo 50% adicional y G4: ningún suplemento, durante 60 días. Antes de la suplementación, a los 30 y 60 días post suplementación se midieron variables como estradiol (E2), progesterona (P4), hormona luteinizante (LH), Triglicéridos, triyodotironina (T3), Tiroxina (T4), Insulina, hormona estimulante de la tiroides (TSH), glucosa y nitrógeno ureico en sangre (BUN).  Resultados: entre los grupos suplementados con Trébol rojo no se observaron diferencias estadísticas; pero con relación al grupo control se evidencia que los valores de estradiol, LH, BUN, TSH y progesterona fueron menor que (P &lt;0.05); por otra parte, los niveles de T3 y T4 mostraron un comportamiento similar durante todo el experimento y se observó un aumento en los valores de insulina y triglicéridos.  Conclusiones: la suplementación con trébol rojo influye negativamente en la conducta reproductiva de vacas lecheras, presentándose valores inferiores en las variables evaluadas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: red clover is a legume that has been used in bovine nutrition for its contribution of protein, is now known to naturally produce secondary metabolites that are like the estrogens of mammals, causing alterations in the reproductive capacity of animals.  Objective: determine the effects of red clover consumption on blood profile in dairy cows on the farm Tunguavita of the UPTC.  Materials and Methods: 32 animals with similar characteristics were selected, they were randomly divided into four treatments: T1: 8 cows with red clover supplement according to their requirements, T2: 8 cows with extra red clover supplement 25%, T3: 8 cows with extra red clover supplement 50% and T4: no supplement, for 60 days. Before supplementation, at 30- and 60-days post-supplementation, variables such as estradiol (E2), progesterone (P4), luteinizing hormone (LH), triglycerides, triiodothyronine (T3), thyroxine (T4), insulin, stimulating hormone were measured the thyroid (TSH), glucose and blood urea nitrogen (BUN).  Results: among the groups supplemented with Red Clover, no statistical differences were observed; but in relation to the control group it is evident that the values of estradiol, LH, BUN, TSH and progesterone were lower than (P &lt;0.05); On the other hand, the levels of T3 and T4 showed a similar behavior throughout the experiment and an increase in the values of insulin and triglycerides was observed.  Conclusions: the supplementation with red clover has a negative effect on the reproductive behavior of dairy cows, presenting lower values in the variables evaluated.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução: o trevo vermelho é uma leguminosa que tem sido utilizada na nutrição bovina por sua contribuição de proteína, atualmente conhecida por produzir naturalmente metabólitos secundários que são similares aos estrogênios dos mamíferos, causando alterações na capacidade reprodutiva dos animais.  Objetivo: determinar os efeitos do consumo de trevo vermelho no perfil sanguíneo em vacas leiteiras na Fazenda Tunguavita da UPTC.  Materiais e Métodos: foram selecionados 32 animais com características semelhantes, divididos aleatoriamente em quatro tratamentos: T1: 8 vacas com suplemento de trevo vermelho de acordo com suas necessidades, T2: 8 vacas com suplemento de trevo vermelho, 25% adicionais, T3: 8 vacas com Suplemento adicional de 50% de trevo vermelho e T4: sem suplemento, por 60 dias. Antes da suplementação, aos 30 e 60 dias pós-suplementação, foram medidas variáveis como estradiol (E2), progesterona (P4), hormônio luteinizante (LH), triglicérides, triiodotironina (T3), tiroxina (T4), insulina, hormônio estimulante a tiróide (TSH), glicose e nitrogênio ureico no sangue (BUN).  Resultados: entre os grupos suplementados com Red Clover, não foram observadas diferenças estatísticas; mas em relação ao grupo controle, é evidente que os valores de estradiol, LH, BUN, TSH e progesterona foram menores que (P &lt;0,05); Por outro lado, os níveis de T3 e T4 apresentaram comportamento semelhante ao longo do experimento e observou-se aumento nos valores de insulina e triglicerídeos.  Conclusões: a suplementação com trevo vermelho tem efeito negativo sobre o comportamento reprodutivo de vacas leiteiras, apresentando valores inferiores nas variáveis avaliadas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[reproducción animal]]></kwd>
<kwd lng="es"><![CDATA[estrógenos]]></kwd>
<kwd lng="es"><![CDATA[hormonas]]></kwd>
<kwd lng="es"><![CDATA[nutrición animal]]></kwd>
<kwd lng="en"><![CDATA[animal reproduction]]></kwd>
<kwd lng="en"><![CDATA[estrogens]]></kwd>
<kwd lng="en"><![CDATA[hormones]]></kwd>
<kwd lng="en"><![CDATA[animal nutrition]]></kwd>
<kwd lng="pt"><![CDATA[reprodução animal]]></kwd>
<kwd lng="pt"><![CDATA[nas variáveis avaliadas. estrogênios]]></kwd>
<kwd lng="pt"><![CDATA[hormônios]]></kwd>
<kwd lng="pt"><![CDATA[nutrição animal]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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