2011, Número 1
Comportamiento maternal alrededor del parto y reconocimiento madre-cría en ovinos Pelibuey
Ramírez MMG, Soto GR, Poindron MP, Álvarez RL, Valencia MJJ, González DFR, Terrazas GAM
Idioma: Español/Inglés
Referencias bibliográficas: 51
Paginas: 27-46
Archivo PDF: 202.03 Kb.
RESUMEN
Se evaluó el comportamiento materno en ovejas multíparas de raza Pelibuey en estabulación, así como la conducta social, antes y durante el parto. Se evaluó el comportamiento madre-cría durante la primera hora posparto y se realizó una prueba de selectividad a dos horas posparto. A las ocho horas se realizó una prueba de elección entre su cordero y uno ajeno. A las 12 h, a los corderos se les hizo una prueba de elección entre la madre propia y una ajena. El índice de agitación sin compañeras fue menor al parto que en ovejas a 145 días de gestación y en ovejas vacías [al parto: (–0.59 ± 0.9), con 145 días (2.6 ± 0.7) y a vacías (4.2 ± 0.9) P ‹ 0.05]. En la primera hora posparto, los corderos machos se incorporaron, iniciaron la búsqueda de la ubre y se amantaron más rápido y por más tiempo que las hembras (P ‹ 0.05). Las madres emitieron más balidos bajos que altos (P ‹ 0.05); limpiaron más rápido a la cría en la cabeza y el tórax que en la cola (P ‹ 0.05), pero limpiaron más veces la cola que el tórax (P ‹ 0.03). A dos horas posparto, las madres fueron selectivas y rechazaron a la cría ajena (P ‹ 0.05). A las ocho y 12 horas, tanto madres como corderos se miraron y permanecieron más tiempo con su co-familiar que con el ajeno (P ‹ 0.05). Se concluyó que las ovejas de la raza Pelibuey muestran buena aptitud maternal, y que la conducta de la cría varía según su sexo.
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