<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282020000100126</article-id>
<article-id pub-id-type="doi">10.19136/era.a7nl.2348</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Maize particle size with the addition of wheat on zootechnical parameters in chickens]]></article-title>
<article-title xml:lang="es"><![CDATA[Tamaño de partícula de maíz con la adición de trigo sobre parámetros zootécnicos en pollos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arce-Menocal]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avila-González]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Coello]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortes-Cuevas]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Camacho]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Veterinaria y Zootecnia Centro de Enseñanza, Investigación y Extensión en Producción Avícola]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo Instituto de Investigaciones Agropecuarias y Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>7</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282020000100126&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282020000100126&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282020000100126&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: An experiment was performed to compare in the meal diets different particle sizes of corn, with and without the addition of whole wheat, on the performance of chicken broilers. 2 800 broilers, four particle sizes was compared; T1) 1175 &#956;m, T2) 740 &#956;m, T3) 541 &#956;m, and T4) 398 &#956;m, with and without the addition of whole wheat (5, 10 and 15%). Body weight (kg), feed consumption (kg), feed conversion ratio (kg/kg), and mortality percentage were evaluated at 7, 14, 21, 28, 35, 42 and 45 days. The gizzard total weight and relative weight was recorded at end of the study. The data recorded in each variable was analyzed by general lineal model for factorial design 4 × 2. At 45 days of age, T2 showed the highest body weight (p &lt; 0.01), maintaining a similar conversion feed rate than T3 and T4, without effects (p &gt; 0.05) in mortality rate; while the size of the gizzard was lower (p &lt; 0.01) as the particle size decreased. The diets with the addition of whole wheat, showed higher body weights (p &lt; 0.01), in relation to diets without addition, non significative effect (p &gt; 0.05), was observed in the other parameters evaluated. A significative effect (p &lt; 0.01) of the interaction of particle size 740 &#956;m with the addition of the whole wheat was observed on the body weight at the end of the study, suggesting that this can be alternative for obtain best performance and save money by feed.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: Se compararon dietas en harina con diferentes tamaños de partículas de maíz, con y sin la adición de trigo entero, sobre parámetros zootécnicos en pollo de engorda. En 2 800 pollos de engorda, se compararon cuatro tamaños de partícula; T1) 1175 &#956;m, T2) 740 &#956;m, T3) 541 &#956;m y T4) 398 &#956;m, con y sin la adición de trigo entero (5, 10 y 15%). El peso corporal (kg), consumo de alimento (kg), tasa de conversión alimenticia (kg/kg) y porcentaje de mortalidad fueron evaluados a 7, 14, 21, 28, 35, 42 y 45 días. El peso total y relativo de la molleja fue evaluado al final del estudio. Los datos de cada variable fueron analizados por el proc GLM en un diseño factorial 4 × 2. A los 45 días de edad, el tratamiento T2 mostró el mayor peso corporal (p &lt; 0.01), manteniendo conversión similar que T3 y T4, sin afectar (p &gt; 0.05) la mortalidad; mientras que el tamaño de la molleja fue menor (p &lt; 0.01) a medida que el tamaño de partícula disminuía. Las dietas con la adición de trigo entero, mostraron peso corporal más alto (p &lt; 0.01), con relación a las dietas en las que no se adiciono, sin mostrar efectos (p &gt; 0.05), en los demás parámetros evaluados. Se observo efecto de interacción de la granulometría 740 &#956;m con la adición de trigo entero en el alimento, sobre la ganancia de peso corporal, al final del estudio, por lo que es una alternativa para eficientar parámetros zootécnicos y costos en alimentación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Broilers]]></kwd>
<kwd lng="en"><![CDATA[corn particle size]]></kwd>
<kwd lng="en"><![CDATA[coarse wheat]]></kwd>
<kwd lng="en"><![CDATA[performance]]></kwd>
<kwd lng="es"><![CDATA[Pollo de engorda]]></kwd>
<kwd lng="es"><![CDATA[tamaño de partícula del maíz]]></kwd>
<kwd lng="es"><![CDATA[trigo entero]]></kwd>
<kwd lng="es"><![CDATA[productividad]]></kwd>
</kwd-group>
</article-meta>
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