Zootecnista egresada de la Universidad Nacional de Colombia, con Maestría en Ciencias Agropecuarias, línea producción Animal Tropical y Doctora en Genética y Mejoramiento Animal de la Universidad Estatal Paulista «Júlio de Mesquita Filho» (UNESP) de Brasil. Docente Investigadora Junior del grupo de investigación Ciencia Animal de la Facultad de Ciencias Agropecuarias U.D.C.A. Docente de cursos en Genética, Sistemas de producción bovina, Investigación, Bioestadística y Diseño Experimental de los programas de Zootecnia, Medicina Veterinaria, Medicina Veterinaria y Zootecnia y Maestría en Ciencias Veterinarias. Investigadora en áreas de Genética Molecular Animal, Mejoramiento Animal y Conservación de recursos Zoogenéticos. Sus principales investigaciones se han desarrollado en la evaluación de proteínas y genes asociadas a características de calidad de la carne bovina.
GRUPOS DE INVESTIGACIÓN: CIENCIA ANIMAL
LÍNEAS DE INVESTIGACIÓN: Salud Humana y Animal y Sostenibilidad Ambiental
LINEAS DE TRABAJO: Genética Animal, Mejoramiento Animal, Biologia Molecular
PRODUCTOS DESTACADOS
Random regression models for milk, fat and protein in Colombian Buffaloes
Fecha de publicación: 30/04/2015
Objective. Covariance functions for additive genetic and permanent environmental effects and, subsequently, genetic parameters for test-day milk (MY), fat (FY) protein (PY) yields and mozzarella cheese (MP) in buffaloes from Colombia were estimate by using Random regression models (RRM) with Legendre polynomials (LP). Materials and Methods. Test-day records of MY, FY, PY and MP from 1884 first lactations of buffalo cows from 228 sires were analyzed. The animals belonged to 14 herds in Colombia between 1995 and 2011. Ten monthly classes of days in milk were considered for test-day yields. The contemporary groups were defined as herd-year-month of milk test-day. Random additive genetic, permanent environmental and residual effects were included in the model. Fixed effects included the contemporary group, linear and quadratic effects of age at calving, and the average lactation curve of the population, which was modeled by third-order LP. Random additive genetic and permanent environmental effects were estimated by RRM using third- to- sixth-order LP. Residual variances were modeled using homogeneous and heterogeneous structures. Results. The heritabilities for MY, FY, PY and MP ranged from 0.38 to 0.05, 0.67 to 0.11, 0.50 to 0.07 and 0.50 to 0.11, respectively. Conclusions. In general, the RRM are adequate to describe the genetic variation in test-day of MY, FY, PY and MP in Colombian buffaloes
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