<?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>2664-0902</journal-id>
<journal-title><![CDATA[Alfa Revista de Investigación en Ciencias Agronómicas y Veterinaria]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Inv. Cs. Agro. y Vet.]]></abbrev-journal-title>
<issn>2664-0902</issn>
<publisher>
<publisher-name><![CDATA[CET-BOLIVIA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2664-09022024000301056</article-id>
<article-id pub-id-type="doi">10.33996/revistaalfa.v8i24.323</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de los probióticos en el tracto intestinal de pollos de engorde: Revisión sistemática]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of probiotics on the intestinal tract of broiler chickens: A systematic review]]></article-title>
<article-title xml:lang="pt"><![CDATA[Efeito dos probióticos no trato intestinal de frangos de corte: Revisão sistemática]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres Cedeño]]></surname>
<given-names><![CDATA[Marlon Josue]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zambrano Cevallos]]></surname>
<given-names><![CDATA[Manuel Ellian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robalino Briones]]></surname>
<given-names><![CDATA[César Aníbal]]></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 Campus Politécnico El Limón ]]></institution>
<addr-line><![CDATA[El Morro ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>8</volume>
<numero>24</numero>
<fpage>1056</fpage>
<lpage>1071</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S2664-09022024000301056&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S2664-09022024000301056&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S2664-09022024000301056&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El uso de probióticos en las aves ha aumentado debido a la mayor demanda de alimentos inocuos sin efecto residual para obtener producciones sanas y sustentables. De ahí que se pretende conocer, ¿cuáles son los probióticos utilizados con mayor frecuencia en el engorde de pollo, y su efecto en el tracto intestinal? Se emplearon fuentes artículos científicos seleccionados de bases de datos como Scielo, Web of Science, Google Académico, Redalyc y Dialnet. La ecuación de búsqueda probióticos+intestino+nutrición+producción+microbiota intestinal junto a los principales operadores de búsqueda AND, OR y NOT. Los probióticos más utilizados en la industria avícola son: Lactobacillus bulgaricus, L. acidophilus, L. casei, L. lactis, L. salivarius, L. plantarum, Streptococcus thermophilus, Enterococcus faecium, E. faecalis, Bifidobacterium spp., Aspergillus oryzae y Saccharomyces cerevisiae. Por lo que, los probióticos se emplean como una opción ideal al cambio de los antibióticos como subterapéuticos, en forma de promotores de crecimiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The use of probiotics in poultry has increased due to the increased demand for safe feed with no residual effect to obtain healthy and sustainable productions. Hence, the aim is to find out which probiotics are most frequently used in chicken fattening and their effect on the intestinal tract. Sources used were scientific articles selected from databases such as Scielo, Web of Science, Google Scholar, Redalyc and Dialnet. The search equation probiotics+intestine+nutrition+production+intestinal microbiota together with the main search operators AND, OR and NOT. The most commonly used probiotics in the poultry industry are: Lactobacillus bulgaricus, L. acidophilus, L. casei, L. lactis, L. salivarius, L. plantarum, Streptococcus thermophilus, Enterococcus faecium, E. faecalis, Bifidobacterium spp., Aspergillus oryzae and Saccharomyces cerevisiae. Therefore, probiotics are used as an ideal alternative to antibiotics as subtherapeutics, in the form of growth promoters.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O uso de probióticos em aves tem aumentado devido à maior demanda por alimentos seguros e sem efeitos residuais para obtenção de uma produção saudável e sustentável. Assim, pretende-se saber quais os probióticos mais utilizados na engorda de frangos e o seu efeito no trato intestinal. Foram utilizadas fontes: artigos científicos selecionados em bases de dados como Scielo, Web of Science, Google Scholar, Redalyc e Dialnet. A equação de busca probióticos+intestino+nutrição+produção+microbiota intestinal juntamente com os principais operadores de busca AND, OR e NOT. Os probióticos mais utilizados na indústria avícola são: Lactobacillus bulgaricus, L. acidophilus, L. casei, L. lactis, L. salivarius, L. plantarum, Streptococcus thermophilus, Enterococcus faecium, E. faecalis, Bifidobacterium spp., Aspergillus oryzae e Saccharomyces cerevisiae. Portanto, os probióticos são utilizados como opção ideal para substituir os antibióticos como subterapêuticos, na forma de promotores de crescimento.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Antibióticos promotores del crecimiento]]></kwd>
<kwd lng="es"><![CDATA[Aves de engorde]]></kwd>
<kwd lng="es"><![CDATA[Probióticos subterapéuticos]]></kwd>
<kwd lng="es"><![CDATA[Tracto intestinal]]></kwd>
<kwd lng="en"><![CDATA[Growth-promoting antibiotics]]></kwd>
<kwd lng="en"><![CDATA[Broilers]]></kwd>
<kwd lng="en"><![CDATA[Subtherapeutic probiotics]]></kwd>
<kwd lng="en"><![CDATA[Intestinal tract]]></kwd>
<kwd lng="pt"><![CDATA[Antibióticos promotores de crescimento]]></kwd>
<kwd lng="pt"><![CDATA[Aves de engorda]]></kwd>
<kwd lng="pt"><![CDATA[Probióticos subterapêuticos]]></kwd>
<kwd lng="pt"><![CDATA[Trato intestinal]]></kwd>
</kwd-group>
</article-meta>
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