<?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>S2079-34802019000200119</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effects of including sweet potato (Ipomoea batatas) and Vitafert as additives on the nutritional value of Cenchrus purpureus cv. CUBA CT-169 and Moringa oleifera silages]]></article-title>
<article-title xml:lang="es"><![CDATA[Efectos de incluir tubérculos de boniato (Ipomoea batatas) y Vitafert como aditivos en el valor nutritivo de ensilajes de Cenchrus purpureus vc. CUBA CT-169 y Moringa oleifera]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alonso Galeana]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elías]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarduy]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[Y.]]></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 ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Guerrero Unidad Académica de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Altamirano Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>53</volume>
<numero>2</numero>
<fpage>119</fpage>
<lpage>135</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2079-34802019000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2079-34802019000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2079-34802019000200119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The effect of including Vitafert (0 and 1 %) and sweet potato (0, 5, 10 and 15 %) on the nutritional value of mixed silages of C. purpureus cv. CUBA CT-169 and M. oleifera was evaluated. There were no differences on dry matter content, crude protein, and neutral detergent fiber of evaluated silages (P&gt;0.05). Organic matter was superior to 85% and differed between control and treatment with 10% of sweet potato (P&lt; 0.05). Both additives increased the production of acetic acid regarding control (P&lt; 0.0001). Only silage with Vitafert and 15% of sweet potato reduced levels of NH3 regarding control (P&lt;0.001). In gas production, there was interaction between the two factors in the first stage of fermentation (P&lt; 0.05). In the first three times of the initial phase, silage with Vitafert produced more gas than control, but there were no differences regarding the rest, except at 2 h. In the final stage of fermentation, there was no interaction between treatments and times. There was a tendency to increase the potential of gas production and Vmax, with the inclusion of Vitafert and increase of tuber levels. The inclusion of additives decreased NH3 levels and increased acetic and butyric acids, as well as SCFAs, ME and OMD (P&lt; 0.01). The IVDDM increased with the inclusion of sweet potato (P&lt; 0.0001). It can be concluded that Vitafert and sweet potato additives, at the evaluated concentrations, had no significant influence on chemical composition of mixed silages but both additives improved the fermentative characteristic of silages by reducing the levels of butyric acid and increasing propionic acid levels. Likewise, its use optimized the performance of kinetic parameters of in vitro fermentation and increased gas production, total and individual SCFAs, IVDDM, ME and OMD, having a positive effect of sweet potato inclusion level on several of these indicators.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se evaluó el efecto de la inclusión de Vitafert (0 y 1 %) y tubérculos de boniato (0, 5, 10 y 15 %), en el valor nutritivo de ensilajes mixtos de C. purpureus vc. CUBA CT-169 y M. oleifera. No se apreció diferencias en el contenido de materia seca, proteína bruta, y fibra detergente neutro de los ensilajes evaluados (P&gt;0.05). La materia orgánica fue mayor al 85% y solo difirió entre control y tratamiento con 10% de boniato (P&lt;0.05). Ambos aditivos incrementaron la producción de ácido acético respecto al control (P&lt;0.0001). Solo el ensilaje con Vitafert y 15% de boniato redujeron los niveles de NH3 respecto al control (P&lt; 0.001). En la producción de gas hubo interacción entre los dos factores en la primera fase de la fermentación (P &lt; 0.05). En los tres primeros horarios de la fase inicial, el ensilaje con Vitafert produjo más gas que el control, pero no mostró diferencias respecto al resto, excepto a las dos horas. En la fase final de la fermentación no hubo interacción entre tratamientos y horarios (P&gt;0.05), y los aditivos mejoraron la producción de gas (P&lt; 0.0001). Hubo una tendencia al incremento en el potencial de producción de gas y Vmáx, al incluir Vitafert e incrementar los niveles de tubérculo. La inclusión de aditivos disminuyó NH3 e incrementó ácidos acético y butírico, así como AGCC totales, EM y DMO (P&lt;0.01). Se incrementó la DIVMS al incluir boniato (P&lt;0.0001). Se concluye que los aditivos Vitafert y tubérculo de boniato, a las concentraciones evaluadas, no influyeron significativamente en la composición química de los ensilados mixtos pero ambos aditivos mejoraron las características fermentativas de los ensilajes al reducir los niveles de ácido butírico e incrementar propiónico. De igual manera, su uso optimizó el comportamiento de los parámetros cinéticos de la fermentación in vitro e incrementó la producción de gas y AGCC individuales y totales, la DIVMS, EM y DMO, con un efecto positivo del nivel de inclusión del boniato en varios de estos indicadores.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[mixed silage]]></kwd>
<kwd lng="en"><![CDATA[quality]]></kwd>
<kwd lng="en"><![CDATA[additives]]></kwd>
<kwd lng="en"><![CDATA[gas production]]></kwd>
<kwd lng="es"><![CDATA[ensilajes mixtos]]></kwd>
<kwd lng="es"><![CDATA[calidad]]></kwd>
<kwd lng="es"><![CDATA[aditivos]]></kwd>
<kwd lng="es"><![CDATA[producción de gas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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