<?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>S2007-90282025000200020</article-id>
<article-id pub-id-type="doi">10.19136/era.a12n2.4046</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización zoométrica de gallinas de traspatio de comunidades indígenas]]></article-title>
<article-title xml:lang="en"><![CDATA[Zoometric characterization of backyard hens from indigenous communities]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Mendoza]]></surname>
<given-names><![CDATA[Paulina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Henández-Melchor]]></surname>
<given-names><![CDATA[Gloria Isela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Morales]]></surname>
<given-names><![CDATA[Jahdai]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bottini-Luzardo]]></surname>
<given-names><![CDATA[María Benedicta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saavedra-Jiménez]]></surname>
<given-names><![CDATA[Luis Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[Teapa Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Chiapas Facultad Maya de Estudios Agropecuarios ]]></institution>
<addr-line><![CDATA[Catazajá Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Guerrero Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Cuajinicuilapa Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>12</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282025000200020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282025000200020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282025000200020&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las gallinas de traspatio desarrollan un papel relevante en las poblaciones rurales, al contribuir tanto a la economía como a la cultura familiar. Sin embargo, existe escasa información sobre el entorno en que se desarrollan y sus características fenotípicas. El objetivo de este estudio fue caracterizar el fenotipo de gallinas criadas en sistema de traspatio. La investigación se llevó a cabo en cinco comunidades indígenas del municipio de Ayutla de los Libres, Guerrero, México. Se registró el peso vivo, circunferencia de la pechuga, longitud del cuerpo, ala, tarso y muslo, color de plumaje, tarsos y piel, así como el tipo de cresta, en 419 gallinas adultas reproductivamente activas (107 machos y 312 hembras). Las variables cuantitativas se analizaron mediante un diseño completamente al azar, correlaciones y análisis de componentes principales; las cualitativas mediante estadística descriptiva. Las aves mostraron talla mediana y variabilidad fenotípica, influida por el sexo y la localidad de origen. Los machos presentaron una conformación moderadamente armónica, y en hembras débilmente armónica. El peso vivo y la longitud del tarso fueron los principales determinantes del tamaño corporal. Predominan gallinas de plumaje oscuro (rojo y negro), tarsos amarillos, piel blanca y cresta simple. Se requieren estudios adicionales para evaluar su potencial productivo y la relación con genes de adaptación al ambiente cálido.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Backyard chickens play a significant role in rural communities by contributing to both household economies and cultural practices. However, limited information is available regarding the environment in which they are raised and their phenotypic characteristics. The objective of this study was to characterize the phenotype of chickens raised under backyard production system. The study was conducted in five indigenous communities in the municipality of Ayutla de los Libres, Guerrero, Mexico. A total of 419 reproductively active adult birds (107 males and 312 females) were evaluated. The recorded traits included live weight; breast circumference; lengths of the body, wing, tarsus and thigh; as well as plumage, tarsi, and skin color; and comb type. Quantitative traits were analyzed using completely randomized design, correlation and principal component analysis, and qualitative traits through descriptive statistical methods. The birds were classified as medium-size and exhibited phenotypic variability influenced by sex and locality of origin. Males showed a moderately harmonious body, while females displayed a weakly harmonious profile. Live weight and tarsus length were the most influential traits in determining body size. Most birds had dark plumage (red and black), yellow tarsi, white skin and a simple comb. Further studies are needed to evaluate their productive potential and the genetic basis of their adaptation to warm environments]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Avicultura]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[diversidad]]></kwd>
<kwd lng="es"><![CDATA[morfometría]]></kwd>
<kwd lng="es"><![CDATA[recurso genético]]></kwd>
<kwd lng="en"><![CDATA[Poultry]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[diversity]]></kwd>
<kwd lng="en"><![CDATA[morphometry]]></kwd>
<kwd lng="en"><![CDATA[genetic resource]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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