Hernández CMG, Ángeles ML, Zapata SL, Montaño BM, Gómez RS

Idioma: Español/Inglés
Referencias bibliográficas: 37
Paginas: 59-77
Archivo PDF: 420.76 Kb.

RESUMEN

El objetivo fue evaluar la reducción de espacio de piso debido al incremento de cerdos por corral, sobre el consumo de alimento (CDA), ganancia de peso (GDP) y eficiencia alimentaria (EA) y las concentraciones séricas de glucosa, urea y cortisol en cerdos en crecimiento y finalización. Se usaron 120 cerdos en crecimiento y 64 en finalización que se aleatorizaron a tres densidades: 1) = un cerdo alojado individualmente con 2.5 m2 disponibles de piso; 2) = seis cerdos en crecimiento o cuatro en finalización alojados en grupo con 0.94 y 1.41 m2 disponibles de piso por cerdo; 3) = 12 cerdos en crecimiento u ocho en finalización alojados en grupo con 0.47 y 0.71 m2 disponibles de piso por cerdo. Las concentraciones séricas de glucosa, urea y cortisol se determinaron al inicio del experimento y al final de las semanas uno, tres y cinco. En crecimiento, el CDA (P < 0.05) y GDP (P < 0.10) fueron mayores en la densidad 1 en comparación con las densidades 2 y 3; la EA fue mayor (P < 0.10) en la densidad 2 que en las densidades 1 y 3. En finalización, el CDA y GDP (P < 0.10) fueron mayores en la densidad 1, en comparación con las densidades 2 y 3. Las concentraciones de glucosa, urea y cortisol no fueron diferentes entre densidades. El consumo de alimento y la ganancia de peso disminuyeron al aumentar la densidad, pero esta disminución no estuvo relacionada con cambios en las concentraciones séricas de algunos indicadores de estrés como glucosa, urea o cortisol.

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