<?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>S2007-11242024000400930</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v15i4.6551</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características de las curvas de lactación en ovejas y factores que influyen en su variación: Revisión]]></article-title>
<article-title xml:lang="en"><![CDATA[Characteristics of lactation curves in ewes and factors influencing their variation: A review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-Hernández]]></surname>
<given-names><![CDATA[Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Alfaro]]></surname>
<given-names><![CDATA[Ana Erika]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Cordero]]></surname>
<given-names><![CDATA[Manuel Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado Jáquez]]></surname>
<given-names><![CDATA[Jorge Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Hernández]]></surname>
<given-names><![CDATA[Glafiro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[ Edo. de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Química ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Iniciativa Privada  ]]></institution>
<addr-line><![CDATA[ San Luís Potosí]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>15</volume>
<numero>4</numero>
<fpage>930</fpage>
<lpage>950</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242024000400930&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242024000400930&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242024000400930&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los programas de mejoramiento genético de las razas de ovejas lecheras han respondido a una creciente demanda y popularidad del mercado, especialmente para quesos elaborados con leche de oveja. Estos derivados de la leche son una fuente importante de sustancias bioactivas para la salud humana. Por lo tanto, el conocimiento de la producción de leche (PRODL) es muy importante y los factores que influyen en su variación. El patrón típico de la PRODL durante el período que una oveja está lactando se conoce como curva de lactación (CL), y éstas pueden ser típicas (CLT) o atípicas (CLA). Las CLT se caracterizan por alcanzar una PRODL máxima (pico de lactación, PL) a los pocos días después del parto, y posteriormente disminuye gradualmente hasta llegar al final de la lactación, o secado. Las CLA son aquellas que muestran alguna desviación del patrón normal. Es importante conocer la representación gráfica del comportamiento de la lactación, ya que, además de predecir la PRODL, permite identificar problemas de salud y alimentación, así como la posibilidad de seleccionar hembras que sobresalen en la PRODL. La persistencia de la lactación (PER) se ha definido como la tasa de disminución en la PRODL después de que se alcanzó el PL, y es muy deseable que las ovejas tengan una alta PER. Se han desarrollado modelos matemáticos para el estudio de las CL y PER. Existen factores genéticos y ambientales que influyen en las CL.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Dairy sheep breed genetic improvement programs have responded to the increasing market demand and popularity, especially for cheeses made from sheep's milk. These milk derivatives are an important source of bioactive substances for human health. Therefore, it is very important to learn about milk production (MPROD) and the factors that influence its variation. The typical pattern of MPROD during the period when an ewe is lactating is known as the lactation curve (LC), and this can be typical (TLC) or atypical (ACL). TLCs are characterized by reaching a maximum MPROD (lactation peak, LP) within a few days after parturition, and then gradually decreasing until the end of lactation, or lactation drying, is reached. ALCs are those that show some deviation from the normal pattern. It is important to know the graphical representation of lactation behavior, as, in addition to predicting MPROD, it makes it possible to identify health and feeding issues, as well as to select females that will excel in MPROD. Persistence of lactation (PER) has been defined as the rate of decline in MPROD after the LP was reached, and it is highly desirable for ewes to have a high PER. Mathematical models have been developed for the study of LCs and PER. There are genetic and environmental factors that influence LCs.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Razas de ovinos]]></kwd>
<kwd lng="es"><![CDATA[Producción de leche]]></kwd>
<kwd lng="es"><![CDATA[Curvas típicas]]></kwd>
<kwd lng="es"><![CDATA[Pico de lactación]]></kwd>
<kwd lng="es"><![CDATA[Persistencia]]></kwd>
<kwd lng="en"><![CDATA[Milk production]]></kwd>
<kwd lng="en"><![CDATA[Peak lactation]]></kwd>
<kwd lng="en"><![CDATA[Persistence]]></kwd>
<kwd lng="en"><![CDATA[Typical curves]]></kwd>
<kwd lng="en"><![CDATA[Sheep breeds]]></kwd>
</kwd-group>
</article-meta>
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