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margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!--[if gte mso 10]> <mce:style><! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} --> <!--[endif] --><span style="font-size: 8pt; font-family: 'Verdana','sans-serif';"> <p style="text-align: justify;">Tanto en la industria lechera como en la de carne, las diferentes biotecnologías reproductivas pueden mejorar la efi ciencia productiva, entre ellas la PIV de embriones bovinos además de presentar importantes oportunidades de aplicación comercial, es una importante herramienta para el estudio de fenómenos biológicos. Los medios de cultivo utilizados para los procesos realizados en la PIV bovina están formulados en base a la presencia de iones, azúcares y aminoácidos (aa) en el ambiente uterino y oviductal, en el momento de la liberación del ovocito, la fertilización y el desarrollo embrionario temprano. El objetivo de este estudio fue evaluar dos protocolos para la producción in vitro de embriones bovinos sobre la tasa de blastocistos producidos. Para el protocolo I el medio de desarrollo utilizado fue el CR-1 preparado en nuestro laboratorio y en el protocolo II se utilizo un medio KSOMaa comercial, siendo esta la única diferencia entre los protocolos empleados. El análisis estadístico se realizó mediante un análisis de varianza y una prueba de Fisher. Un total de 488 y 631 ovocitos fueron usados para conformar los grupos de estudio del medio KSOMaa (evolve®) y el CR1aa, respectivamente, se encontraron diferencias estadísticamente signifi cativas (P menor que 0.05), tanto para la tasa de clivaje como para el porcentaje blastocistos obtenidos en cada uno de los protocolos. En conclusión estos resultados indican la importancia de la calidad del agua utilizada en la preparación de los medios de desarrollo embrionario.</p><p style="text-align: justify;"><strong><span style="font-size: 8pt; font-family: "Verdana","sans-serif";">Abstract</span></strong></p><p style="text-align: justify;"><span style="font-size: 8pt; font-family: 'Verdana','sans-serif';"> </span></p><p style="text-align: justify;">On cattle production both dairy and meat industries, can improve productivity by using commercial reproductive biotechnology like IVP of bovine embryos, which is also used in a variety of scientifi c studies. The culture media used on the IVP processes are created to simulate natural condition’s of the oviduct and uterus at the moment of ovulation, fertilization and early embryo development. The objective of this study was to compare tow protocols for IVP of bovine embryos evaluating blastocyst production rates. Experiment I used CR-1 produced in our lab for the embryo culture (631 oocytes), experiment 2 used KSOM (commercial) for the embryo culture (488 oocytes). The statistical study was made by an ANAVA and a Fisher test. The results reveled statistically important differences between experiments on all of the parameters that were evaluated. These results indicated that the quality of the water used on preparation of media for embryo culture affects the embryo development.</p> </span>}, number={2}, journal={CES Medicina Veterinaria y Zootecnia}, author={Mejía Isaza, Vicente and Arango Duque, Santiago and Pareja Lopez, Andrés and Camargo Rodriguez, Omar and Urrego Alvarez, Rodrigo}, year={2010}, month={abr.}, pages={39–46} }