<?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>S2448-61322021000100101</article-id>
<article-id pub-id-type="doi">10.21929/abavet2021.2</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Coccidiosis en pollos de engorda comerciales en Brazil entre 2012 y 2019: especies principales y grados de daño]]></article-title>
<article-title xml:lang="en"><![CDATA[Coccidiosis in commercial broilers in Brazil between 2012 and 2019: main species and degrees of injury]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gazoni]]></surname>
<given-names><![CDATA[Fabio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Matte]]></surname>
<given-names><![CDATA[Fabrizio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chiarelli-Adorno]]></surname>
<given-names><![CDATA[Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mariely-Jaguezeski]]></surname>
<given-names><![CDATA[Antonise]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tellez-Isaias]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schafer-da-Silva]]></surname>
<given-names><![CDATA[Aleksandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Vetanco do Brasil  ]]></institution>
<addr-line><![CDATA[Chapecó ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Federal University of Santa Maria  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Arkansas Department of Poultry Science ]]></institution>
<addr-line><![CDATA[Fayetteville ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,State University of Santa Catarina (UDESC) Department of Animal Science ]]></institution>
<addr-line><![CDATA[Chapecó ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>11</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-61322021000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-61322021000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-61322021000100101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: El propósito del presente estudio fue determinar la frecuencia de la coccidiosis en pollos de engorde, detectar las especies más comunes de Eimeria spp y cargas parasitarias en aves comerciales en Brasil de 2012 a 2019. Estudiamos 13,648 aves entre 9 y 49 días de edad en 82 empresas en 13 estados brasileños. Las aves se seleccionaron al azar (3 a 6 aves / aviario) y se sacrificaron por eutanasia. Se analizaron las lesiones macroscópicas y se raspó la mucosa intestinal para el conteo de ooquistes de E. maxima. La clasificación de especies se basó en el tamaño de los ooquistes. También cuantificamos la carga infecciosa mediante un sistema de puntuación. Se detectó coccidiosis subclínica (E. maxima micro) en un promedio de 34.8%. E. acervulina (16.1%), E. maxima (7.9%) y E. tenella (4.1%) también se identificaron con fluctuaciones anuales. El conteo de ooquistes estuvo dentro de la puntuación 1 (1 a 10 ooquistes / ave) en el 47.5 al 84.4% de los casos; seguido de una puntuación 2 (11 a 20), 3 (21 a 40) y 4 (más de 41 ooquistes / ave). La coccidiosis subclínica es motivo de preocupación, ya que 3.5 de cada diez aves estaban infectadas. Este es un factor responsable del menor rendimiento productivo de los pollos de engorde.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: The purpose of the present study was to determine the occurrence of coccidiosis in broilers, detect the most commonly occurring species of Eimeria spp, and parasitic burdens in industrial poultry in Brazil from 2012 to 2019. We studied 13,648 birds between 9-49 days of age at 82 companies in 13 Brazilian states. Birds were randomly selected (3-6 birds/aviary) and euthanized. Macroscopic lesions were analyzed, and the intestinal mucosa was scraped to count E. maxima oocysts. The classification of species was based on the size of the oocysts. We also quantified the infectious burden using a scoring system. Subclinical coccidiosis (E. maxima micro) was detected in an average of 34.8%, E. acervulina (16.1%), E. maxima (7.9%), and E. tenella (4.1%) were also identified with annual fluctuations. The count of oocysts was within score 1 (1-10 oocysts/bird) in 47.5-84.4% of the cases; followed by score 2 (11-20), 3 (21-40) and 4 (over 41 oocysts/bird). Subclinical coccidiosis is a cause for concern, with 3.5 out of every ten birds being infected. This is a factor responsible for the lower productive performance of broilers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Coccidiosis]]></kwd>
<kwd lng="es"><![CDATA[Eimeria acervulina]]></kwd>
<kwd lng="es"><![CDATA[Eimeria maxima]]></kwd>
<kwd lng="es"><![CDATA[Eimeria tenella]]></kwd>
<kwd lng="es"><![CDATA[prevalencia]]></kwd>
<kwd lng="en"><![CDATA[Coccidiosis]]></kwd>
<kwd lng="en"><![CDATA[Eimeria acervulina]]></kwd>
<kwd lng="en"><![CDATA[Eimeria maxima]]></kwd>
<kwd lng="en"><![CDATA[Eimeria tenella]]></kwd>
<kwd lng="en"><![CDATA[prevalence]]></kwd>
</kwd-group>
</article-meta>
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