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Parámetros genéticos para fenotipos alternativos de resiliencia en vacas Holstein
Fiona Louise Guinan1, Robert H Fourdraine2, Francisco Peñagaricano1
1Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706.
JDS communications
|February 25, 2026
Resumen
La selección genética para la resiliencia animal es crucial debido al cambio climático y las enfermedades. Este estudio encontró que los indicadores de resiliencia medidos durante varios días, como los cambios en la producción de leche, capturan más variación genética y son los mejores para mejorar la resiliencia del ganado lechero.
Sus antecedentes:
- La resiliencia animal, la capacidad de resistir o recuperarse de las perturbaciones, es cada vez más vital debido a la variabilidad climática, la escasez de mano de obra y las enfermedades.
- La selección genética para la resiliencia puede mejorar la estabilidad y la productividad del rebaño lechero.
Conclusiones:
- Los indicadores de resiliencia basados en mediciones de un solo día o períodos limitados tienen baja heredabilidad.
- Los indicadores de resiliencia calculados en varios días, como ΔMY, capturan una variación genética significativa.
- Estos indicadores de varios días son los más adecuados para la mejora genética de la resiliencia en el ganado lechero.
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