<?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>2224-7920</journal-id>
<journal-title><![CDATA[Revista de Producción Animal]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. prod. anim.]]></abbrev-journal-title>
<issn>2224-7920</issn>
<publisher>
<publisher-name><![CDATA[Ediciones Universidad de Camagüey]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-79202021000100037</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Aceite esencial de orégano (Origanum vulgare L) y sexo como factores en la respuesta productiva en pollos de engorde]]></article-title>
<article-title xml:lang="en"><![CDATA[Essential Oil from Oregano (Origanum vulgare L) and Sex as Productive Response Factors of Broilers]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campozano-Marcillo]]></surname>
<given-names><![CDATA[Gustavo Adolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Antonio-Hurtado]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arteaga Chávez]]></surname>
<given-names><![CDATA[Fátima]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Bello]]></surname>
<given-names><![CDATA[Alcides]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Díaz]]></surname>
<given-names><![CDATA[Juan Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garzón-Jarrin]]></surname>
<given-names><![CDATA[Rafael Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López (ESPAM-MFL ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas (UCLV) Facultad de Ciencias Agropecuarias Departamento de Medicina Veterinaria y Zootecnia]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica de Cotopaxi  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>33</volume>
<numero>1</numero>
<fpage>37</fpage>
<lpage>48</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-79202021000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-79202021000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-79202021000100037&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Antecedentes: El uso de aceite esencial de orégano es una alternativa viable en las dietas de aves, como promotor de crecimiento. El objetivo de este estudio fue evaluar el efecto de la adición de aceites esenciales de orégano (AEO) en la dieta alimenticia y el sexo sobre el comportamiento productivo del pollo de engorde.  Métodos: Se utilizaron 400 pollos de un día de edad de la línea genética Cobb 500®, distribuidos en cinco tratamientos (T1- Control sin aditivo; T2- 300 mg/kg de Zinc Bacitracina; T3- 100 mg/kg de AOE; T4- 200 mg/kg de AEO y T5- 300 mg/kg de AEO) con cuatro repeticiones, sobre el peso vivo, ganancia de peso acumulada, consumo de alimento, conversión alimenticia y rendimiento de la canal, en ambos sexos.  Resultados: El peso vivo, la ganancia de peso y la conversión alimenticia fueron influenciados (P &lt; 0,05) por los tratamientos, en el T5 se obtuvieron los mejores promedios. Se observó interacción (P &lt; 0,05) entre los tratamientos y el sexo, para el peso vivo, la ganancia de peso y el consumo de alimento acumulado. El sexo tuvo una influencia significativa (P &lt; 0,05) en el rendimiento de la pechuga y de los muslos-piernas.  Conclusiones: La inclusión de aceite esencial de orégano en la dieta de pollos en combinación con el sexo tiene un efecto positivo en las variables peso vivo, ganancia de peso y consumo de alimento acumulado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background: The utilization of essential oil from oregano is a viable alternative to promote growth, which can be used in the diet of birds. The aim of this study was to evaluate the effect of adding essential oils from oregano (EOO) in the diet, and sex, on the productive performance of broilers.  Methods: A total of 400 one-day old Cobb 500®, were used. The animals were distributed in five treatments (T1- control without additives; T2- 300 mg/kg of bacitracine zinc; T3- 100 mg/kg of EOO; T4- 200 mg/kg of EOO; and T5- 300 mg/kg of EOO), with four repetitions regarding live weight, accumulated weight gain, food consumption, food conversion, and carcass yield, in the two sexes.  Results: Live weight, weight gain, and food conversion were influenced (P&lt;0.05) by the treatments; T5 showed the best results. The males had the best averages. An interaction (P&lt;0.05) was observed between the treatments and sexm, in relation to live weight, weight gain, and accumulated food consumption. Sex had a significant influence (P&lt;0.05) on breast and quarter yields.  Conclusions: The inclusion of essential oil from oregano in the diet of chickens, along with sex, had a positive effect on variables live weight, weight gain, and accumulated food consumption.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aditivos de piensos]]></kwd>
<kwd lng="es"><![CDATA[promotor de crecimiento]]></kwd>
<kwd lng="es"><![CDATA[rendimiento de la canal]]></kwd>
<kwd lng="en"><![CDATA[feedstuff additives]]></kwd>
<kwd lng="en"><![CDATA[growth promoter]]></kwd>
<kwd lng="en"><![CDATA[carcass yield]]></kwd>
</kwd-group>
</article-meta>
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