<?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>2007-1124</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. pecuarias]]></abbrev-journal-title>
<issn>2007-1124</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11242019000100052</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v10i1.4655</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Importancia de la jerarquía social sobre los comportamientos alimenticios y parasitarios de ovinos criados en dos sistemas pastoriles]]></article-title>
<article-title xml:lang="en"><![CDATA[Importance of sheep social hierarchy on feeding behavior and parasite load in silvopastoral and grass monoculture grazing systems]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flota-Bañuelos]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Lorca]]></surname>
<given-names><![CDATA[Juan A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Candelaria-Martínez]]></surname>
<given-names><![CDATA[Bernardino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[ Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Conkal  ]]></institution>
<addr-line><![CDATA[ Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Chiná  ]]></institution>
<addr-line><![CDATA[ Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<volume>10</volume>
<numero>1</numero>
<fpage>52</fpage>
<lpage>67</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242019000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242019000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242019000100052&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Para determinar la relación entre el nivel jerárquico, preferencias por forraje y parasitismo de ovinos en dos sistemas de pastoreo (sistema silvopastoril: SSP y monocultivo de pasto estrella: PE), se utilizaron 22 ovinos Pelibuey mantenidos en pastoreo diurno, a los cuales se les aplicaron pruebas de jerarquía social para obtener el índice de dominancia, pruebas de selectividad de especies vegetales forrajeras (C. nlemfuensis, L. leucocephala, G. sepium, G. ulmifolia y H. rosa-sinensis), análisis parasitario de huevecillos por gramo de excremento y determinación de hematocrito. Se observó una jerarquía no lineal con dominancia lineal y bidireccional para los grupos, de h=0.75 en el SSP y h=0.5 en PE. Los ovinos más dominantes presentaron mayor cantidad de conductas agresivas en el SSP y PE (rs= 0.790909, P=0.05 y rs= 0.845455, P=0.05); y menor carga parasitaria (rs= -0.909091, P=0.05) en el SSP y PE (rs= -0.727273, P=0.05). Los ovinos del SSP tuvieron preferencia por C. nlemfuensis, pero los animales que consumieron más follaje de L. leucocephala presentaron mayor nivel de hematocrito (rs=0.694269, P=0.05). Se concluye que los ovinos con mayor índice de dominancia que pastorearon en el sistema silvopastoril y en potreros con pasto estrella, tuvieron menores cargas parasitarias, y que el pastoreo en sistemas silvopastoriles ofrece a los ovinos el consumo de follaje de especies arbóreas y arbustivas, que promueve la capacidad de resistir cargas parasitarias elevadas, y mantener niveles estables de hematocrito independientemente de su nivel jerárquico dentro del grupo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In sheep the interaction between social hierarchy, forage preference and parasite load effects production. A study was done of this interaction in two grazing systems (silvopastoral, SSP; star grass monoculture, PE) with twenty-two Pelibuey sheep per system. Tests were done of social hierarchy to calculate dominance index values, of forage plant species (C. nlemfuensis, L. leucocephala, G. sepium, G. ulmifolia and H. rosa-sinensis) preference, of parasite load (gastrointestinal nematode egg count per gram of feces), and of hematocrit levels. A generally nonlinear hierarchy was present in both systems, with linear dominance (h=0.75) in the SSP and bidirectional dominance (h=0.5) in the PE. In both systems the most dominant individuals had the highest number of aggressive behaviors (SSP: rs= 0.790909, P=0.05; PE: rs= 0.845455, P=0.05) and the lowest parasite loads (SSP: rs= -0.909091, P=0.05; PE: rs = -0.727273, P=0.05). In the SSP, the animals had greater preference for C. nlemfuensis but those that consumed more L. leucocephala had higher hematocrit levels (rs=0.694269, P=0.05). Sheep grazing in silvopastoral systems consume more arboreal and shrub species foliage which helps to control parasite load and maintain stable hematocrit levels regardless of group social rank.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Comportamiento animal]]></kwd>
<kwd lng="es"><![CDATA[Hábitos alimentarios]]></kwd>
<kwd lng="es"><![CDATA[Parásitos]]></kwd>
<kwd lng="es"><![CDATA[Rumiantes]]></kwd>
<kwd lng="en"><![CDATA[Animal behavior]]></kwd>
<kwd lng="en"><![CDATA[Feeding preferences]]></kwd>
<kwd lng="en"><![CDATA[Parasites]]></kwd>
<kwd lng="en"><![CDATA[Small ruminants]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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