<?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>2079-3480</journal-id>
<journal-title><![CDATA[Cuban Journal of Agricultural Science]]></journal-title>
<abbrev-journal-title><![CDATA[Cuban J. Agric. Sci.]]></abbrev-journal-title>
<issn>2079-3480</issn>
<publisher>
<publisher-name><![CDATA[Editorial del Instituto de Ciencia Animal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2079-34802018000300235</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Performance of dairy production, reproduction and longevity in Holstein and its crosses with Cebu]]></article-title>
<article-title xml:lang="es"><![CDATA[Comportamiento de la producción lechera, reproducción y longevidad en el Holstein y sus cruces con Cebú]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Arelis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ponce de León]]></surname>
<given-names><![CDATA[Raquel Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ciencia Animal  ]]></institution>
<addr-line><![CDATA[San José de Las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>52</volume>
<numero>3</numero>
<fpage>235</fpage>
<lpage>247</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2079-34802018000300235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2079-34802018000300235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2079-34802018000300235&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The records of Mambí de Cuba dairy cows (3/4 Holstein 1/4 Cebu), Siboney de Cuba (5/8 Holstein 3/8 Cebu) and Holstein, from three herds were used to determine the effect of the genetic group (GG) and various non-genetic factors, for milk production traits (131 658 lactations of 63 066 cows), reproduction (117 794 reproductive events of 36 331 cows), longevity (18 741 cows) and milk production per life (56 536 cows). The traits of cumulative milk production up to 305 days (M305), duration of lactation (DL), age at first service (A first service), parturition-first service interval (PSI), parturition-gestation interval (PGI), parturition interval (PI),productive life (PL), number of parturition per life (PN) and milk production per life (MPLife) were studied. A mixed linear model was applied, with the use of the SAS MIXED procedure. This model included the fixed effects of the genetics, herd, lactation number, year, parturition time, genetic group interactions x lactation number, genetic group x parturition year and genetic group x parturition time. As random, the cow nested in the herd and the errors were included. For the A first S, PL, PN and MPLife traits, the model did not include the lactation number or its interaction. The fixed effects were significant, except for the parturition time and its interaction with the genetic group in the reproductive and longevity traits. It is concluded that the Mambí de Cuba showed better milk production accumulated during life and high longevity.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se utilizaron los registros de vacas lecheras Mambí de Cuba (3/4 Holstein 1/4 Cebú), Siboney de Cuba (5/8 Holstein 3/8 Cebú) y Holstein, de tres ganaderías, para determinar el efecto del grupo genético (GG) y diversos factores no genéticos, para rasgos de producción lechera (131 658 lactancias de 63 066 vacas), reproducción (117 794 eventos reproductivos de 36 331 vacas), longevidad (18 741 vacas) y producción de leche por vida (56 536 vacas). Se estudiaron los rasgos producción de leche acumulada hasta 305 días (L305), duración de la lactancia (DL), edad al primer parto (Epar1), intervalo parto primer servicio (IPS), intervalo parto gestación (IPG), intervalo entre partos (IPP), vida productiva (VProd), número de partos por vida (NP) y producción de leche por vida (LTVida). Se aplicó un modelo lineal mixto, con el uso del procedimiento MIXED del SAS. Este modelo incluyó los efectos fijos del genético, rebaño, número de lactancia, año, época de parto, interacciones grupo genético x número de lactancia, grupo genético x año de parto y grupo genético x época de parto. Como aleatorios se incluyeron la vaca anidada en el rebaño y el error. Para los rasgos Epar1, VProd, NP y LTVida, el modelo no incluyó el número de lactancia ni su interacción. Los efectos fijos fueron significativos, a excepción de la época de parto y su interacción con el grupo genético en los rasgos reproductivos y de longevidad. Se concluye que el Mambí de Cuba presentó mejores producciones lecheras acumuladas durante la vida y mayor longevidad.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[dairy cattle]]></kwd>
<kwd lng="en"><![CDATA[environmental effect]]></kwd>
<kwd lng="en"><![CDATA[genetic groups]]></kwd>
<kwd lng="es"><![CDATA[bovinos lecheros]]></kwd>
<kwd lng="es"><![CDATA[efectos ambientales]]></kwd>
<kwd lng="es"><![CDATA[grupos genéticos]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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