<?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>S2448-61322019000100111</article-id>
<article-id pub-id-type="doi">10.21929/abavet2019.911</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effect of Tithonia diversifolia meal on productive variables in laying hens]]></article-title>
<article-title xml:lang="es"><![CDATA[Efecto de la harina de Tithonia diversifolia sobre las variables productivas en gallinas ponedoras]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuente-Martínez]]></surname>
<given-names><![CDATA[Benjamín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carranco-Jáuregui]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrita-Ramírez]]></surname>
<given-names><![CDATA[Vilma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-González]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sanginés-García]]></surname>
<given-names><![CDATA[Leonor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,National Autonomous University of Mexico Faculty of Veterinary Medicine and Zootechnics Center for Teaching, Research and Extension in Poultry Production]]></institution>
<addr-line><![CDATA[ Mexico City]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,National Institute of Medical Sciences and Nutrition Salvador Zubirán Department of Animal Nutrition Dr. Fernando Pérez-Gil Romo ]]></institution>
<addr-line><![CDATA[ Mexico City]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,National Autonomous University of Mexico Faculty of Veterinary Medicine and Zootechnics ]]></institution>
<addr-line><![CDATA[ Mexico City]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>9</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-61322019000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-61322019000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-61322019000100111&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The objective of this research was to evaluate the effect of Tithonia diversifolia meal (TDM) inclusion in rations for laying hens of the first cycle on productive variables. 192 white Bovans hens, 30 weeks of age and 11 weeks in production were randomized into 4 treatments (control, 5%, 10%, and 15% TDM inclusion) with 4 repetitions each. During 10 weeks of trial, the productive variables were evaluated. The results were analyzed by statistical design of repeated measurements over time and multiple regression analysis for the variables. There was no significant difference (P&gt;0.05) for egg weight, feed conversion, percentage of a broken egg, in coltsfoot and dirty; percentage of egg-lying and egg mass groups with TDM presented values lower than the control (P&lt;0.05). Food consumption in treatments 5 and 10% was greater than the control (P&lt;0.05). According to the results obtained under the work conditions, it is concluded that Tithonia diversifolia meal can be considered an alternative for the feeding laying hens up to a 10% inclusion level without affecting the production variables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo fue evaluar el efecto de inclusión de harina de Tithonia diversifolia (HTD) en raciones para gallinas ponedoras de primer ciclo sobre las variables productivas. 192 gallinas Bovans blancas, con 30 semanas de edad y 11 semanas en producción fueron distribuidas al azar en 4 tratamientos (testigo, 5%, 10% y 15% inclusión HTD) y 4 repeticiones cada uno. Durante 10 semanas de ensayo se evaluaron las variables productivas. Los resultados se analizaron por un diseño estadístico de mediciones repetidas en el tiempo y un análisis de regresión múltiple para las variables. No hubo diferencia (P&gt;0.05) para peso de huevo, conversión alimentaria, porcentaje de huevo roto, en fárfara y sucio; en porcentaje de postura y masa de huevo los grupos con HTD presentaron valores inferiores al testigo (P&lt;0.05). Consumo de alimento en 5 y 10% fueron mayores al testigo (P&lt;0.05). De acuerdo a los resultados obtenidos bajo las condiciones de trabajo empleadas, se concluye que la harina de Tithonia diversifolia puede considerarse una alternativa para la alimentación de gallinas ponedoras hasta un nivel de 10% de inclusión sin afectar las variables productivas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Tithonia diversifolia]]></kwd>
<kwd lng="en"><![CDATA[laying hens]]></kwd>
<kwd lng="en"><![CDATA[egg]]></kwd>
<kwd lng="en"><![CDATA[productive variables]]></kwd>
<kwd lng="es"><![CDATA[Tithonia diversifolia]]></kwd>
<kwd lng="es"><![CDATA[gallinas ponedoras]]></kwd>
<kwd lng="es"><![CDATA[huevo]]></kwd>
<kwd lng="es"><![CDATA[variables productivas]]></kwd>
</kwd-group>
</article-meta>
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