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Main Library
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Folly Beach Library
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John L. Dart Library
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St. Paul's/Hollywood Library
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Edisto Library
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Wando Mount Pleasant Library
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Identificación de un polimorfismo del gen PAPP-A2 asociado a la fertilidad en vaquillas Romosinuano criadas en subtrópico.
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- Author(s): Luna-Nevárez, Pablo1 ; Rincón, Gonzalo2; Medrano, Juan F.2; Riley, David G.3; Chase Jr., Chad C.4; Coleman, Sam W.4; DeAtley, Kasey L.5; Islas-Trejo, A.2; Silver, Gail A.5; Thomas, Milton G.5
- Source:
Revista Mexicana de Ciencias Pecuarias. abr-jun2012, Vol. 3 Issue 2, p185-200. 16p. 6 Charts. - Source:
- Additional Information
- Subject Terms:
- Abstract: El objetivo fue identificar polimorfismos de un solo nucleótido (SNP) asociados a la fertilidad en hembras bovinas criadas en subtropico. La re-secuenciación de nueve genes relacionados al eje endocrino GH-IGF, localizados en los cromosomas 5, 16 y 20 del bovino, identificó 73 SNP útiles para estudios genéticos asociativos; sin embargo, sólo siete resultaron polimórficos y exclusivos de la raza Romosinuano. Muestras de ADN se extrajeron de 129 vaquillas Romosinuano y usadas para determinar los genotipos correspondientes a cada SNP. Un análisis de modelos mixtos identificó únicamente a un polimorfismo del gen PAPP-A2 (C/T, rs110490898) como predictor (P<0.05) del comportamiento reproductivo. El alelo T fue el más favorable (P<0.05) ya que éste se asoció a una reducción tanto en la edad al primer parto (-37.1 ± 14.4 días), como en la edad al segundo parto (-65.43 ± 30.8 días). En el análisis de contrastes el término lineal resultó significativo (P<0.05), pero no el quadrático, lo cual sugiere un efecto aditivo de los alelos. Los resultados proporcionan evidencia para proponer al gen PAPP-A2, como candidato asociado al comportamiento reproductivo en vaquillas y vacas primerizas de la raza Romosinuano. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Revista Mexicana de Ciencias Pecuarias is the property of Tecnica Pecuaria en Mexico and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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