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
Cellular response of the bovine mammary gland after Weissella confusa infusion to control Streptococcus agalactiae
Fecha de publicación: 16/05/2013
The use of lactic acid bacteria (LAB) as a potential therapeutic agent to control bovine mastitis was previously proposed. However, little is known about the cellular response of the bovine mammary gland in cattle infected with Streptococcus agalactiae and treated with LAB. To assess the cellular response by the mammary gland in lactating cows after infection with Streptococcus agalactiae followed by infusion with Weissella confusa as antibacterial treatment. Healthy udder quarters of lactating cows were infected with S. agalactiae (107 cfu/mL). After 24 h of pathogen infusion, 50% of the quarters were infused with 109 cfu/mL of W. confusa (SW) and the remaining 50% were kept as control units (S). At days 1, 2, 3, 4, 5, 11, and 14 post-infusion of the pathogen, the clinical signs of mastitis and the degree of cellular response by the mammary gland were evaluated using the California mastitis test, somatic cell count, electrical conductivity, and differential leukocyte count in milk. The SW quarters showed clinical inflammation of the mammary gland associated with a significant increase in somatic cell count, California mastitis test, electrical conductivity and high proportion of polymorphonuclear neutrophils. The results suggest that the infusion with W. confusa cells induced a higher cellular immune response in the bovine mammary gland than S. agalactiae alone. Results indicate that W. confusa infusions for controlling S. agalactiae should not be adopted. However, the activation mechanism of somatic cells in the mammary gland needs to be elucidated.
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