<?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>0120-0690</journal-id>
<journal-title><![CDATA[Revista Colombiana de Ciencias Pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Colom Cienc Pecua]]></abbrev-journal-title>
<issn>0120-0690</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Agrarias, Universidad de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-06902023000400161</article-id>
<article-id pub-id-type="doi">10.17533/udea.rccp.v36n4a1</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effect of weaning weight on growth performance, feed efficiency, and behavioral characteristics of Holstein-Friesian and Brown Swiss calves]]></article-title>
<article-title xml:lang="es"><![CDATA[Efecto del peso al destete sobre el rendimiento del crecimiento, la eficiencia alimenticia y las características de comportamiento de terneros Holstein-Friesian y Pardo suizo]]></article-title>
<article-title xml:lang="pt"><![CDATA[Efeitos do pesos au desmame no desempenho de crescimento, eficiência alimentar e características comportamentais de bezerros Holstein-Friesian e Pardo suíço]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Koçyi&#287;it]]></surname>
<given-names><![CDATA[R&#305;dvan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Özdemir]]></surname>
<given-names><![CDATA[Veysel Fatih]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yanar]]></surname>
<given-names><![CDATA[Mete]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayd&#305;n]]></surname>
<given-names><![CDATA[Recep]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Güler]]></surname>
<given-names><![CDATA[Olcay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Diler]]></surname>
<given-names><![CDATA[Abdulkerim]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayd&#305;n]]></surname>
<given-names><![CDATA[Mehmet Akif]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Ataturk University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>36</volume>
<numero>4</numero>
<fpage>161</fpage>
<lpage>171</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-06902023000400161&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-06902023000400161&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-06902023000400161&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Farm profitability depends on raising healthy calves, which rests on successful feeding and management programs.  Objective: To determine the effects of weaning weight on growth performance, feed efficiency, behavioral traits, as well as feeding cost of Holstein-Friesian and Brown Swiss calves.  Methods: Sixty-seven newborn dairy calves were allocated into four weaning-weight groups [60 kg (n=18), 65 kg (n=19), 70 kg (n=18) and 75 kg (n=12)]. Body weights (BW) and measurements were recorded at birth, weaning, and four months of age. An instantaneous sampling method was used to collect behavioral data.  Results: Daily weight gain of Brown Swiss calves was higher than Holsteins between weaning and four months of age (p&lt;0.05). During pre-weaning, daily weight gain of calves weaned at 60 kg was lower than the other three groups (p&lt;0.05). Feed efficiency of Holstein-Friesian was higher than Brown Swiss calves in the period between birth and four months of age (p&lt;0.05). Chest depth of calves weaned at 60 kg was (p&lt;0.05) lower compared to the other groups. Water drinking behavior during the pre-weaning period was notably higher in calves weaned at 75 kg (p&lt;0.05).  Conclusions: Our results suggest that dairy calves can be weaned at 60 kg of BW without detrimental effects on performance, and their feed cost per kg weight gain is significantly lower compared to higher weaning weights.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  La crianza de terneros sanos es uno de los principales requisitos para asegurar la rentabilidad de la granja, y depende en gran medida del éxito en los programas de alimentación y manejo de los terneros.  Objetivo:  Determinar los efectos del peso al destete sobre el rendimiento del crecimiento, la eficiencia alimenticia, las características de comportamiento y el costo de alimentación de terneros Holstein-Friesian y Pardo suizo.  Métodos:  Sesenta y siete terneros lecheros recién nacidos se distribuyeron en cuatro grupos diferentes de peso al destete [60 kg (n=18), 65 kg (n=19), 70 kg (n=18) y 75 kg (n=12)]. Los pesos y medidas corporales se registraron al nacimiento, al destete, y a los cuatro meses de edad. Se utilizó un método de muestreo instantáneo para recopilar los datos de comportamiento.  Resultados:  La ganancia diaria de peso de los terneros Pardo suizo entre el destete y los cuatro meses de edad fue mayor que la de los Holstein-Friesian (p&lt;0,05). Además, las ganancias diarias de peso de los terneros destetados con 60 kg de peso corporal (PC) fueron menores que las de los otros tres grupos durante el período previo al destete (p&lt;0,05). La eficiencia alimenticia de los terneros Holstein-Friesian fue mayor que la de los Pardo suizo en el período entre nacimiento y cuatro meses de edad (p&lt;0,05). La profundidad del pecho de los terneros en el grupo destetado a 60 kg fue menor que en otros grupos (p&lt;0,05). El comportamiento de consumo de agua fue notablemente superior en los terneros destetados a 75 kg de PC durante el período previo al destete (p&lt;0,05).  Conclusiones:  Nuestros resultados sugieren que los terneros lecheros pueden destetarse a los 60 kg de PC sin efectos perjudiciales sobre su rendimiento, y su costo de alimento por 1 kg de aumento de peso es significativamente menor en comparación con mayores pesos de destete.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Antecedentes:  A criação de bezerros saudáveis é um dos principais requisitos para garantir a rentabilidade dos empreendimentos e depende muito do sucesso nos programas de alimentação e manejo dos bezerros.  Objetivo:  Determinar os efeitos do peso ao desmame sobre o desempenho de crescimento, eficiência alimentar, características comportamentais e custo de alimentação de bezerros da raça Holstein-Friesian e Pardo suíço.  Métodos:  Sessenta e sete bezerros recém-nascidos foram alocados em quatro diferentes grupos de peso ao desmame [60 kg (n=18), 65 kg (n=19), 70 kg (n=18) e 75 kg (n=12)]. Os pesos e medidas corporais foram determinados ao nascimento, desmame e 4 meses de idade. O método de amostragem instantânea foi utilizado para coletar os dados comportamentais.  Resultados:  O ganho de peso diário dos bezerros Pardos suíços entre o desmame e os 4 meses de idade foi significativamente maior do que os da Holstein-Friesian (p&lt;0,05). Além disso, o ganho de peso diário dos bezerros desmamados com 60 kg de peso corporal (PC) foi significativamente (p&lt;0,05) menor do que os outros três grupos no período pré-desmame. A eficiência alimentar dos bezerros Holstein-Friesian foi significativamente maior do que a dos bezerros Pardo suíço nos períodos entre o nascimento e os 4 meses de idade (p&lt;0,05). O crescimento na profundidade do peito dos bezerros do grupo desmamado com 60 kg de PC foi significativamente (p&lt;0,05) menor do que os demais grupos. Apenas o comportamento de beber foi notavelmente maior (p&lt;0,05) nos bezerros desmamados com 75 kg de PC no período pré-desmame.  Conclusões:  Os resultados deste estudo sugerem que bezerros leiteiros podem ser desmamados com 60 kg de PC sem qualquer efeito prejudicial sobre seu desempenho e o custo de alimentação para ganho de peso de 1 kg é significativamente menor em comparação com pesos de desmame avançado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[behavior]]></kwd>
<kwd lng="en"><![CDATA[Brown Swiss]]></kwd>
<kwd lng="en"><![CDATA[cattle]]></kwd>
<kwd lng="en"><![CDATA[dairy calves]]></kwd>
<kwd lng="en"><![CDATA[feed efficiency]]></kwd>
<kwd lng="en"><![CDATA[feeding cost]]></kwd>
<kwd lng="en"><![CDATA[growth performance]]></kwd>
<kwd lng="en"><![CDATA[Holstein-Friesian]]></kwd>
<kwd lng="en"><![CDATA[weaning weight]]></kwd>
<kwd lng="es"><![CDATA[Comportamiento]]></kwd>
<kwd lng="es"><![CDATA[costo de alimentación]]></kwd>
<kwd lng="es"><![CDATA[eficiencia alimenticia]]></kwd>
<kwd lng="es"><![CDATA[ganado]]></kwd>
<kwd lng="es"><![CDATA[Holstein-Friesian]]></kwd>
<kwd lng="es"><![CDATA[Pardo suizo]]></kwd>
<kwd lng="es"><![CDATA[peso al destete]]></kwd>
<kwd lng="es"><![CDATA[rendimiento de crecimiento]]></kwd>
<kwd lng="es"><![CDATA[terneros lecheros]]></kwd>
<kwd lng="pt"><![CDATA[bezerros leiteiros]]></kwd>
<kwd lng="pt"><![CDATA[comportamento]]></kwd>
<kwd lng="pt"><![CDATA[custo da alimentação]]></kwd>
<kwd lng="pt"><![CDATA[desempenho de crescimento]]></kwd>
<kwd lng="pt"><![CDATA[eficiência alimentar]]></kwd>
<kwd lng="pt"><![CDATA[gado]]></kwd>
<kwd lng="pt"><![CDATA[Holstein-Friesian]]></kwd>
<kwd lng="pt"><![CDATA[Pardo suíço]]></kwd>
<kwd lng="pt"><![CDATA[pesos de desmame]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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