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Inclusión de grasa en dieta de cerdas primíparas: efecto sobre la reproducción y performance de la camada

F. R. Rivas, M. A. González, V. Matiller, S. I. Williams
Idioma: en

Resumen

La incorporación de grasa en la dieta podría mejorar la performance reproductiva de cerdos en producción, principalmente durante las épocas más calurosas. Para comprobar esta hipótesis se evaluó el efecto de la inclusión de grasa a diferentes niveles sobre variables reproductivas de cerdas primíparas en condiciones de subtrópico. Se utilizaron 3 grupos de 6 animales (n=18) a los cuales se les suministraron 3 dietas con diferentes niveles de inclusión de grasa (0%, 3,5% y 7%) desde el día 90 de gestación y durante la lactación (21 días). Las variables medidas fueron el número de lechones nacidos totales, nacidos vivos, muertos y peso de la camada al nacimiento y al destete, mientras que sobre las hembras se registró el intervalo de retorno al celo. Se empleó un diseño completamente aleatorizado y los datos fueron analizados mediante ANOVA con el software estadístico Infostat®. No se encontraron diferencias al incorporar grasa, en relación al número de lechones nacidos vivos, muertos, totales, peso al nacimiento e intervalo-destete celo (p>0,05) mientras que el número y peso de lechones al destete se vio influenciado de manera significativa (p<0,05). En conclusión, la adición de grasa en dietas de cerdas primíparas no afecta variables al nacimiento ni el intervalo detete-celo, pero mejora el número y peso de los lechones al destete.

Palabras clave

Cerdas; lípidos; nutrición; peso vivo; reproducción; estrés calórico

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DOI: http://dx.doi.org/10.30972/vet.3114633