<?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>2007-0705</journal-id>
<journal-title><![CDATA[Nova scientia]]></journal-title>
<abbrev-journal-title><![CDATA[Nova scientia]]></abbrev-journal-title>
<issn>2007-0705</issn>
<publisher>
<publisher-name><![CDATA[Universidad de La Salle Bajío A. C., Coordinación de Investigación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-07052015000300245</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Complementación energética y proteínica en corderas Blackbelly x Pelibuey en pastoreo]]></article-title>
<article-title xml:lang="en"><![CDATA[Energy and protein supplemented in Blackbelly x Pelibuey ewe lambs under grazing]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora-Zepeda]]></surname>
<given-names><![CDATA[Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliva-Hernández]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hinojosa-Cuéllar]]></surname>
<given-names><![CDATA[José Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Centro de Investigación Regional Golfo-Centro ]]></institution>
<addr-line><![CDATA[ Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Popular de la Chontalpa  ]]></institution>
<addr-line><![CDATA[ Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<volume>7</volume>
<numero>15</numero>
<fpage>245</fpage>
<lpage>264</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-07052015000300245&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-07052015000300245&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-07052015000300245&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las corderas alimentadas con base en el pastoreo sin complementación alimenticia muestran una baja ganancia diaria de peso (GDP). Esta situación retrasa el crecimiento y puede influir la edad y peso vivo (PV) a la pubertad así como la edad a un PV especifico de sacrificio. El objetivo del estudio consistió en determinar la influencia de la complementación alimenticia (CA) sobre la eficiencia postdestete de corderas Blackbelly x Pelibuey (Bb x Pb). Se utilizaron 16 corderas, bajo un diseño factorial de dos factores y con medidas repetidas en un factor. Los factores fueron CA [complementación alimenticia baja (CAB): 0.26 Mcal EM y 11.7 g PC/cordera/d y complementación alimenticia creciente (CAC): al inicio como CAB más incrementos de 0.13Mcal EM y 5.85 g PC/cordera/d cada 40 d] y número de período de evaluación (P). El modelo incluyó los efectos de CA, P y la interacción CA x P. Las variables estudiadas fueron PV y GDP. La CA no afectó (P&gt;0.05) el PV y GDP. Sin embargo, P y CA x P influyeron en el PV y GDP (P&lt;0.05). En conclusión, en corderas Bb x Pb en pastoreo la CAC no incrementó la GDP con respecto a una CAB.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The ewe lamb fed under grazing without supplemental feed has low average daily weight gain (ADWG). This situation retarded growth and may influence age and body weight (BW) at puberty as well as the age at a specific slaughter body weight. The objective of this study was to determine the influence of feed supplementation (FS) on post weaning performance of Blackbelly x Pelibuey (Bb x Pb) ewe lambs. Sixteen ewe lambs were used, in a factorial design with two factor and repeated measures on a factor. The factors were the level of FS [low feed supplementation (LFS): 0.26 Mcal ME and 11.7 g CP/lamb/d and increasing feed supplementation (IFS): at beginning as LFS plus increments of 0.13Mcal ME and 5.85 g CP/lamb/d every 40 d] and numer of evaluation period (P). The model included the effects of FS, P and FS x P interaction. The variables studied were BW and ADWG. The FS did not affect (P&gt;0.05) BW and ADWG. However, P and FS x P affected (P&lt;0.05) BW and ADWG. In conclusion, in grazing Bb x Pb ewe lambs the IFS did not improve ADWG with respect to a LFS.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ovinos de pelo]]></kwd>
<kwd lng="es"><![CDATA[eficiencia postdestete]]></kwd>
<kwd lng="es"><![CDATA[trópico húmedo]]></kwd>
<kwd lng="es"><![CDATA[crecimiento]]></kwd>
<kwd lng="en"><![CDATA[Hair sheep]]></kwd>
<kwd lng="en"><![CDATA[post weaning performance]]></kwd>
<kwd lng="en"><![CDATA[humid tropic]]></kwd>
<kwd lng="en"><![CDATA[growth]]></kwd>
</kwd-group>
</article-meta>
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