<?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>2007-1124</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. pecuarias]]></abbrev-journal-title>
<issn>2007-1124</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11242021000100087</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v12i1.5529</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Milk yield derived from the energy and protein of grazing cows receiving supplements under an agrosilvopastoral system]]></article-title>
<article-title xml:lang="es"><![CDATA[Rendimiento de leche derivado de energía y proteína de vacas en pastoreo recibiendo suplementos en un sistema agrosilvopastoril]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esparza-Jiménez]]></surname>
<given-names><![CDATA[Sherezada]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Albarrán-Portillo]]></surname>
<given-names><![CDATA[Benito]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Ronquillo]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[Anastacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Armijo]]></surname>
<given-names><![CDATA[José Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[Carlos Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Centro Universitario UAEM Temascaltepec ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del Estado de México Instituto de Ciencias Agropecuarias y Rurales ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>1</numero>
<fpage>87</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242021000100087&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242021000100087&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242021000100087&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Dual purpose farms southwest of the State of Mexico produce milk and calves under subtropical agrosilvopastoral systems (ASPS). During the dry season, farmers supplement their cattle due to the low availability and quality of grasses, without considering, besides grasses, the contribution of woody species to dry matter intake, metabolizable energy (ME), and crude protein (CP) requirements of cows. The aim of this study was to determine milk produced from forage energy (MFe) and protein (MFp) of grazing cow with three types of supplement. First supplement consisted of cracked maize and commercial concentrate resulting on 14 % of CP (S14). To the S14 mixture 7 % of soybean meal was added to increase CP to 16 % (S16), and commercial concentrate of 16 % CP was used as a third supplement (SC16). Six lactating cows were allocated in a 3x3 replicated Latin Square (three cows per square), three experimental periods (EP) (three weeks per EP). There were no significant effects of supplements (P=0.80) on performance variables. Mean milk yield was 6.8 kg/cow/d. Milk from forage energy and protein were 0.8 and 6.1 kg/cow/day, respectively. Mean milk urea nitrogen (MUN) was high regardless of supplement; but nitrogen in urine (44.1 mg/dL) and feces (1.4 mg/g) were higher for SC16 (P=0.001 and 0.04, respectively). Cows obtained 90 and 10 % of their CP and metabolizable energy requirements for maintenance and production from the agrosilvopastoral system.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el suroeste del Estado de México producen leche y becerros en sistemas agrosilvopastoriles subtropicales. Durante la época de estiaje, el ganado es suplementado debido a la baja disponibilidad y calidad de los pastos, sin considerar la contribución de especies leñosas a las necesidades de consumo de energía metabolizable (EM) y proteína cruda (PC). El objetivo del estudio fue determinar leche producida a partir de aportes de energía (LFe) y proteína (LFp) de forrajes, de vacas en pastoreo con tres tipos de suplemento. El primero consistió en mazorca de maíz molida y concentrado comercial (14 % de PC) (S14). A la mezcla S14 se añadió 7 % de pasta de soya para incrementar a 16 % la PC (S16); y se utilizó concentrado comercial 16 % de PC (SC16) como tercer suplemento. Seis vacas en lactación se asignaron al azar en un diseño de cuadro latino 3x3 repetido (tres vacas/cuadro), y tres periodos experimentales (PE). El tipo de suplemento no tuvo efecto sobre las variables de respuesta (P=0.80). Leche producida a partir de LFe y LFp de forrajes fue 0.08 y 6.1 kg/vaca/día, respectivamente. Se detectaron altos niveles de nitrógeno ureico en leche (NUL), sin importar el tipo de suplemento. El tratamiento SC16 incrementó los niveles de nitrógeno en orina (44.1 mg/dl) (P=0.001) y en heces (1.4 mg/g) (P=0.04). Las vacas obtuvieron el 90 y 10 % de sus necesidades de PC y EM para mantenimiento y producción de leche a partir de forrajes consumidos en un sistema agrosilvopastoril.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Agrosilvopastoral]]></kwd>
<kwd lng="en"><![CDATA[Milk from forage]]></kwd>
<kwd lng="en"><![CDATA[Supplements]]></kwd>
<kwd lng="en"><![CDATA[Nitrogen excretions]]></kwd>
<kwd lng="es"><![CDATA[Leche]]></kwd>
<kwd lng="es"><![CDATA[Forraje]]></kwd>
<kwd lng="es"><![CDATA[Excreción de nitrógeno]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="">
<collab>IndexMundi</collab>
<source><![CDATA[Agricultural production, supply and distribution]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<source><![CDATA[Lactodata Información sobre el sector lechero]]></source>
<year>2017</year>
<numero>11</numero>
<issue>11</issue>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Albarrán-Portillo]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Rebollar-Rebollar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rojo-Rubio]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Avilés-Nova]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Socioeconomic and productive characterization of dual purpose farms oriented to milk production in a subtropical region of Mexico]]></article-title>
<source><![CDATA[Trop Anim Health Prod]]></source>
<year>2015</year>
<volume>47</volume>
<page-range>519-23</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Absalón-Medina]]></surname>
<given-names><![CDATA[VA]]></given-names>
</name>
<name>
<surname><![CDATA[Blake]]></surname>
<given-names><![CDATA[RW]]></given-names>
</name>
<name>
<surname><![CDATA[Gene Fox]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Juárez-Lagunes]]></surname>
<given-names><![CDATA[EG]]></given-names>
</name>
<name>
<surname><![CDATA[Nicholson]]></surname>
<given-names><![CDATA[FC]]></given-names>
</name>
<name>
<surname><![CDATA[Canudas-Lara]]></surname>
<given-names><![CDATA[EG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Limitations and potentials of dual-purpose cow&#8217;s herds in central coastal Veracruz, Mexico]]></article-title>
<source><![CDATA[Trop Anim Health Prod]]></source>
<year>2011</year>
<volume>44</volume>
<page-range>1131-42</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salas-Reyes]]></surname>
<given-names><![CDATA[IG]]></given-names>
</name>
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Estrada-Flores]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rojo-Rubio]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez-Armijo]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Productive and economic response to partial replacement of cracked maize ears with ground maize or molasses in supplements for dual-purpose cows]]></article-title>
<source><![CDATA[Rev Mex Cienc Pecu]]></source>
<year>2019</year>
<volume>10</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>335-52</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Deen]]></surname>
<given-names><![CDATA[AU]]></given-names>
</name>
<name>
<surname><![CDATA[Tyagi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Yadav]]></surname>
<given-names><![CDATA[RD]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Tyagi]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar Singh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Feeding balanced rations can improve the productivity and economics of milk production in dairy cattle: a comprehensive field study]]></article-title>
<source><![CDATA[Trop Anim Health Prod]]></source>
<year>2019</year>
<volume>51</volume>
<page-range>737-44</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Charbonneau]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Chouinard]]></surname>
<given-names><![CDATA[PY]]></given-names>
</name>
<name>
<surname><![CDATA[Allard]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Lapierre]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Pellerin]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Milk from forage as affected by carbohydrates source and degradability with alfalfa silage-based diets]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>2006</year>
<volume>89</volume>
<page-range>283-93</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Charbonneau]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Bregard]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Allard]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Lefebvre]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Pellerin]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revisiting the prediction of milk from forage according to NRC 2001]]></article-title>
<source><![CDATA[Can J Anim Sci]]></source>
<year>2003</year>
<volume>83</volume>
<page-range>647</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Albarrán-Portillo]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz-Rodea]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rojo-Rubio]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez-Armijo]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Socioeconomic and productive characteristics of dual purpose farms based on agrosilvopastoral systems in subtropical highlands of central Mexico]]></article-title>
<source><![CDATA[Agroforest Syst]]></source>
<year>2018</year>
<volume>93</volume>
<page-range>1939-47</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="book">
<collab>Grazing terminology</collab>
<source><![CDATA[Terminology for grazing lands grazing animals]]></source>
<year></year>
<publisher-loc><![CDATA[Oregon State University ]]></publisher-loc>
<publisher-name><![CDATA[Forage information system]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Broderick]]></surname>
<given-names><![CDATA[GA]]></given-names>
</name>
<name>
<surname><![CDATA[Clayton]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>1997</year>
<volume>80</volume>
<page-range>2964-71</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wildman]]></surname>
<given-names><![CDATA[EE]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[GM]]></given-names>
</name>
<name>
<surname><![CDATA[Wagner]]></surname>
<given-names><![CDATA[PE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A dairy cow body condition scoring system and its relationship to select production characteristics]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>1982</year>
<volume>265</volume>
<page-range>495-501</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="book">
<collab>AOAC</collab>
<source><![CDATA[Official Methods of Analysis]]></source>
<year>2000</year>
<edition>15th</edition>
<publisher-loc><![CDATA[Arlington, VA, USA ]]></publisher-loc>
<publisher-name><![CDATA[AOAC International]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mauricio]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
<name>
<surname><![CDATA[Mould]]></surname>
<given-names><![CDATA[FL]]></given-names>
</name>
<name>
<surname><![CDATA[Dhanoa]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Owen]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Channa]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Theodorou]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A semi-automated in vitro gas production technique for ruminant feedstuff evaluation]]></article-title>
<source><![CDATA[Anim Feed Sci Technol]]></source>
<year>1999</year>
<volume>79</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>321-30</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baker]]></surname>
<given-names><![CDATA[RD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estimating herbage intake from animal performance]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Leaver]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<source><![CDATA[Herbage Intake Handbook]]></source>
<year>1982</year>
<page-range>77-93</page-range><publisher-loc><![CDATA[Hurley ]]></publisher-loc>
<publisher-name><![CDATA[British Grassland Society]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="book">
<collab>AFRC</collab>
<source><![CDATA[Agricultural and Food Research Council. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients]]></source>
<year>1993</year>
<publisher-loc><![CDATA[Wallingford ]]></publisher-loc>
<publisher-name><![CDATA[CAB International]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harper]]></surname>
<given-names><![CDATA[JK]]></given-names>
</name>
<name>
<surname><![CDATA[Cornelisse]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kime]]></surname>
<given-names><![CDATA[LF]]></given-names>
</name>
<name>
<surname><![CDATA[Hyde]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Budgeting for agricultural decision making. Pennsylvania State University]]></source>
<year>2013</year>
<publisher-name><![CDATA[College of Agricultural Sciences]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="">
<collab>SAS</collab>
<source><![CDATA[SAS/STAT User&#8217;s guide]]></source>
<year>1989</year>
<publisher-loc><![CDATA[Cary, NC, USA ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kononoff]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Handford]]></surname>
<given-names><![CDATA[KJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Technical Note: Estimating statistical power of mixed models used in dairy nutrition experiments]]></article-title>
<source><![CDATA[Animal Science]]></source>
<year>2006</year>
</nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salas-Reyes]]></surname>
<given-names><![CDATA[IG]]></given-names>
</name>
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Rebollar-Rebollar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Albarrán-Portillo]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of the sustainability of dual-purpose farms by the IDEA method in the subtropical area of central Mexico]]></article-title>
<source><![CDATA[Trop Anim Health Prod]]></source>
<year>2015</year>
<volume>47</volume>
<page-range>1187-94</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gehman]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Bertrand]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Jenkins]]></surname>
<given-names><![CDATA[TC]]></given-names>
</name>
<name>
<surname><![CDATA[Pinkerton]]></surname>
<given-names><![CDATA[BW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of carbohydrate source on nitrogen capture in dairy cows on pasture]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>2006</year>
<volume>89</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>2659-67</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Granzin]]></surname>
<given-names><![CDATA[BC]]></given-names>
</name>
<name>
<surname><![CDATA[McL]]></surname>
<given-names><![CDATA[Dryden G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Monensin supplementation of lactating cows fed tropical grasses and cane molasses or grain]]></article-title>
<source><![CDATA[Anim Feed Sci Technol]]></source>
<year>2005</year>
<volume>120</volume>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bottini-Luzardo]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilar-Pérez]]></surname>
<given-names><![CDATA[CF]]></given-names>
</name>
<name>
<surname><![CDATA[Centurión-Castro]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Solorio-Sánchez]]></surname>
<given-names><![CDATA[FJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ku-Vera]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Milk yield and blood urea nitrogen in crossbred cows grazing Leucaena leucocephala in a silvopastoral system in the Mexican tropics]]></article-title>
<source><![CDATA[Trop Grasslands-Forrajes Trop]]></source>
<year>2016</year>
<volume>4</volume>
<page-range>159-67</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salvador-Loreto]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Arriaga-Jordán]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Estrada-Flores]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[Vicente-Mainar]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Albarrán-Portillo]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molasses supplementation for dual-purpose cows during the dry season in subtropical Mexico]]></article-title>
<source><![CDATA[Trop Anim Health Prod]]></source>
<year>2016</year>
<volume>48</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>643-8</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
<name>
<surname><![CDATA[Montes]]></surname>
<given-names><![CDATA[AH]]></given-names>
</name>
<name>
<surname><![CDATA[Villegas De Gante]]></surname>
<given-names><![CDATA[AZ]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[El proceso socio-técnico de producción de Queso Añejo de Zacazonapan, Estado de México]]></article-title>
<source><![CDATA[Rev Mex Cienc Pecu]]></source>
<year>2011</year>
<volume>2</volume>
<page-range>161-76</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kohn]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Kalscheur]]></surname>
<given-names><![CDATA[KF]]></given-names>
</name>
<name>
<surname><![CDATA[Russek-Cohen]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of models to estimate urinary nitrogen and expected milk urea nitrogen]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>2002</year>
<volume>85</volume>
<page-range>227-33</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tamminga]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nutrition management of dairy cows as a contribution of pollution control]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>1992</year>
<volume>75</volume>
<page-range>345-57</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jonker]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Kohn]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[High]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Use of milk urea nitrogen to improve dairy cow diets]]></article-title>
<source><![CDATA[J Dairy Sci]]></source>
<year>2002</year>
<volume>85</volume>
<page-range>939-46</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rivera]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Chára]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Barahona]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[CH4, CO2, and N2O emissions from grasslands and bovine excreta in two intensive tropical dairy production system]]></article-title>
<source><![CDATA[Agroforest Syst]]></source>
<year>2019</year>
<volume>93</volume>
<page-range>915-28</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vandermeulen S]]></surname>
<given-names><![CDATA[Ramírez-Restrepo CA]]></given-names>
</name>
<name>
<surname><![CDATA[Beckers Y]]></surname>
<given-names><![CDATA[Claessens H]]></given-names>
</name>
<name>
<surname><![CDATA[Bindelle]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Agroforestry for ruminants: a review of trees and shrubs as fodder in silvopastoral temperate and tropical production systems]]></article-title>
<source><![CDATA[Anim Prod Sci]]></source>
<year>2018</year>
<volume>58</volume>
<page-range>767-77</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
