<?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>S2007-11242016000200243</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Crecimiento y características de la canal de corderos finalizados con clorhidrato de zilpaterol en pastoreo de alfalfa]]></article-title>
<article-title xml:lang="en"><![CDATA[Growth and carcass characteristics of lambs finished with zilpaterol hydrochloride in grazing alfalfa]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Macías Cruz]]></surname>
<given-names><![CDATA[Ulises]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avendaño Reyes]]></surname>
<given-names><![CDATA[Leonel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vicente Pérez]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez Valenzuela]]></surname>
<given-names><![CDATA[Francisco D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Correa Calderón]]></surname>
<given-names><![CDATA[Abelardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Ríos]]></surname>
<given-names><![CDATA[Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto Navarro]]></surname>
<given-names><![CDATA[Sergio A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mellado]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Mexicali BC]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo A.C.  ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,New Mexico State University Department of Animal and Range Science ]]></institution>
<addr-line><![CDATA[Las Cruces ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma Agraria "Antonio Narro" Departamento de Nutrición Animal ]]></institution>
<addr-line><![CDATA[ Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>243</fpage>
<lpage>252</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242016000200243&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242016000200243&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242016000200243&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo del estudio fue evaluar el efecto de clorhidrato de zilpaterol (CZ) sobre la ganancia de peso y las características de la canal en corderos finalizados en pradera de alfalfa y suplementados con concentrado en corral. Un total de 24 corderos machos enteros Dorper x Pelibuey, con peso vivo inicial de 25.0 ± 0.24 kg, fueron divididos en dos grupos (n=12) y alimentados con 0 o 10 mg/cabeza/día de CZ los últimos 30 días antes del sacrificio. Durante el periodo experimental, todos los corderos pastorearon en alfalfa 8 h/día y se suplementaron con 450 g/d de concentrado. El CZ no afectó (P&gt;0.05) el peso vivo. Las ganancias de peso diaria y total fueron similares (P&gt;0.05) entre ambos grupos. Las características de canal y el rendimiento de cortes primarios no fueron afectados (P&gt;0.05) por el CZ. En conclusión, el clorhidrato de zilpaterol a una dosis de 10 mg/cabeza/día no mejoró el crecimiento ni las características de canal en corderos finalizados en pradera de alfalfa y suplementados con concentrado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The objective of the study was to evaluate the effect of zilpaterol hydrochloride (ZH) on the weight gain and carcass characteristics in lambs finished in alfalfa pasture and supplemented with concentrate in pen. A total of 24 Dorper x Pelibuey ram lambs initially weighting 25.0±0.24 kg were divided in two groups (n=12) and fed with 0 or 10 mg/ head/d of ZH for the last 30 d before slaughter. During the experimental period, all lambs were grazed in alfalfa during 8 h/d and supplemented with 450 g/d of concentrate. The ZH did not affect (P&gt;0.05) the live weight. Daily and total weight gains were similar (P&gt;0.05) between both groups. Carcass characteristics and wholesale cut yields were not affected (P&gt;0.05) by ZH. In conclusion, growth and carcass characteristics were not improved by feeding zilpaterol (10 mg/head/d) in finished lambs on alfalfa grassland and supplemented with concentrate.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ovinos de pelo]]></kwd>
<kwd lng="es"><![CDATA[&#946;-agonistas adrenérgicos]]></kwd>
<kwd lng="es"><![CDATA[Zilpaterol]]></kwd>
<kwd lng="es"><![CDATA[Pastoreo de alfalfa]]></kwd>
<kwd lng="en"><![CDATA[Hair sheep]]></kwd>
<kwd lng="en"><![CDATA[&#946;-adrenergic agonist]]></kwd>
<kwd lng="en"><![CDATA[Zilpaterol]]></kwd>
<kwd lng="en"><![CDATA[Grazing alfalfa]]></kwd>
</kwd-group>
</article-meta>
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