<?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>0377-9424</journal-id>
<journal-title><![CDATA[Agronomía Costarricense]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Costarricense]]></abbrev-journal-title>
<issn>0377-9424</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica. Colegio de Ingenieros y Agrónomos. Ministerio de Agricultura y Ganadería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0377-94242019000200091</article-id>
<article-id pub-id-type="doi">10.15517/rac.v43i2.38202</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del alojamiento, reuso de la cama y almacenamiento en la composición química de la pollinaza]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of housing, recycling and storage on poultry litter chemical composition.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora-Sanabria]]></surname>
<given-names><![CDATA[Rebeca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Muñoz]]></surname>
<given-names><![CDATA[Juan Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dorado-Montenegro]]></surname>
<given-names><![CDATA[Sebastián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saborío-Montero]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Zootecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>43</volume>
<numero>2</numero>
<fpage>91</fpage>
<lpage>105</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242019000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242019000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242019000200091&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se efectuaron análisis químicos a 26 muestras de pollinaza fresca obtenida de 18 granjas de pollo de engorde con galeras abier- tas o convencionales y galeras cerradas o tipo túnel con camas de un solo uso y reutilizadas de cascarilla de arroz, con el objetivo de evaluar la composición química de la pollinaza, el efecto del tipo de alojamiento y de la reutilización de la cama sobre la composición nutricional. Adicio- nalmente, 17 muestras fueron almacenadas bajo condiciones ambientales no controladas por 60 días, para determinar el efecto del almacenaje sobre el contenido nutricional. Se realizaron análisis de materia seca a 135°C (MS), proteína cruda (PC), fibra detergente neutra (FDN), fibra detergente ácida (FDA), nitrógeno ligado a la fibra detergente neutra (FDN-N), nitrógeno liga- do a la fibra a detergente ácida (FDA-N), extracto etéreo (EE), energía digestible (ED), nitrógeno no proteico (NNP), cenizas, lignina (LDA), pro- teína equivalente (PEq), contenido de calcio y fósforo. El tipo de alojamiento no presentó efecto significativo sobre la composición nutricional de la pollinaza, el material obtenido de las camas reutilizadas en más de 2 ciclos de producción, presentó mayores (p&lt;0,05) concentraciones de PC, FDA, calcio y fósforo, al compararlo con las camas de un solo uso; esta última presentó menores concentraciones (p&lt;0,05) de FC y FDN. El almacenaje de la pollinaza presentó un efecto significativo (p&lt;0,05) en los valores de PC, NNP, EE, FDN, FDA y en la materia seca. La reutili- zación de la cama, así como el almacenaje de la misma, afectó la composición química de la polli- naza; no así, el tipo de alojamiento. La composi- ción nutricional de la pollinaza analizada permite considerarla como un buen ingrediente para la alimentación de rumiantes, siempre y cuando se acaten las disposiciones del Servicio Nacional de Salud Animal (SENASA) y de otras instituciones gubernamentales e internacionales que regulan su uso y manejo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Chemical analysis were performed on 26 samples of fresh single-used and recycled rice husk poultry litter from conventional and tunnel-ventilated housing systems with the objective to characterize its nutrient composition and to study the effect of housing design and litter reutilization on nutritient concentration. In addition, 17 samples were stored under non-controlled environmental conditions for 60 days, in order to determine the effect of storage time on nutritional composition. Samples were analyzed for dry matter (DM) at 135°C, crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), neutral detergent insoluble nitrgogen (NDF-N), acid detergent insoluble nitrogen (ADF-N), ether extract (EE), digestible energy (DE), non-protein nitrogen (NPN), ashes, lignin (LDF), protein equivalent (PEq), and Ca and P content. Poultry housing design had no effect on litter nutritional composition; however, recycled bedding showed higher values (p&lt;0.05) for CP, ADF, Ca and P, when compared with single-used litter; the latter had lower (p&lt;0.05) DM and NDF content. Furthermore, storage time had a significant effect (p&lt;0.05) on CP, NPN, EE, NFE, NDF, ADF and DM. Recycling and storage time of broiler litter affected its nutritional composition; while housing design had no effect. Evaluated poultry litter in this investigation is consider as an appropriate ingredient for ruminant feeding, as long as its usage follows government laws and recommendations from the National Service of Animal Health (SENASA) and other international authorities that regulates its proper use]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Pollinaza]]></kwd>
<kwd lng="es"><![CDATA[alojamiento]]></kwd>
<kwd lng="es"><![CDATA[nutrición]]></kwd>
<kwd lng="es"><![CDATA[pollos de engorde]]></kwd>
<kwd lng="es"><![CDATA[rumiantes]]></kwd>
<kwd lng="es"><![CDATA[almacenamiento.]]></kwd>
<kwd lng="en"><![CDATA[Poultry litter]]></kwd>
<kwd lng="en"><![CDATA[housing]]></kwd>
<kwd lng="en"><![CDATA[nutrition]]></kwd>
<kwd lng="en"><![CDATA[broilers]]></kwd>
<kwd lng="en"><![CDATA[ruminants]]></kwd>
<kwd lng="en"><![CDATA[storage]]></kwd>
</kwd-group>
</article-meta>
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