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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 23, No. 1, 2005, pp. 49-60
Bioline Code: zt05005
Full paper language: English
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 23, No. 1, 2005, pp. 49-60

 en Use of Mulberry ( Morus check for this species in other resources sp.) and Gliricidia ( Gliricidia sepium check for this species in other resources ) as concentrate substitute for growing lambs
Alexander Sánchez, Carlos Romero, Cesar Araque y Ramón Flores

Abstract

An experiment was carried out to evaluate the use of fresh mulberry ( Morus check for this species in other resources sp.) and gliricidia ( Gliricidia sepium check for this species in other resources ) as substitutes of concentrate used as diet complements of confined growing lambs. The duration of the trial was 16 weeks ant the variables measured were: basal diet intake (harvested grass: Pennisetum purpureum check for this species in other resources ), N-NH3 level in the ruminal liquor, and daily weight gain (DWG). Thirty lambs were used with initial average weight of 15.5±1.2 kg, and randomly distributed in individual pens in three treatments: T1: 380 g of concentrate, T2: 185 g of concentrate + 2 kg of fresh mulberry, and T3: 1.5 kg of fresh mulberry + 1.5 kg of fresh gliricidia + minerals. The basal diet was offered ad libitum. The results were: average grass intake (g DM/d): 486a, 342b, and 387b (P< 0.05), N-NH3 (mg/l): 173, 186, and 224 (P>0.05), and DWG (g/d): 54b, 87a, and 56b (P< 0.05) for T1, T2, and T3, respectively. The partial substitution of the concentrate with fresh mulberry resulted in higher daily weight gains than those obtained with the other feed combinations used in this experiment.

Keywords
Mulberry, gliricidia, growing lambs, confinement.

 
 es Uso de morera ( Morus check for this species in other resources sp.) y mata ratón ( Gliricidia sepium check for this species in other resources ) como sustitutos del alimento concentrado para corderos en crecimiento
Alexander Sánchez, Carlos Romero, Cesar Araque y Ramón Flores

Resumen

Con la finalidad de evaluar el uso de morera ( Morus check for this species in other resources sp.) y mata ratón ( Gliricidia sepium check for this species in other resources ) frescos como sustitutos del alimento concentrado balanceado de corderos estabulados en crecimiento, se realizó un experimento durante 16 semanas en la Sección de Ovinos de la Facultad de Agronomía, UCV, donde se midieron: consumo de la dieta basal (pasto de corte,- Pennisetum purpureum check for this species in other resources ), nivel de N-NH3 en el líquido ruminal y ganancia diaria de peso. Se utilizaron 30 corderos con pesos iniciales promedio de 15,5 #177; 1,2 kg, distribuidos en puestos individuales y asignados al azar a un diseño completamente aleatorizado y en cantidades iguales a los siguientes tratamientos: T1: 380 g de alimento concentrado balanceado, T2: 185 g de alimento concentrado balanceado + 2 kg de morera fresca y T3: 1,5 kg de morera fresca + 1,5 kg de mata ratón fresco + minerales. La dieta basal se ofreció ad libitum. Los resultados para T1, T2 y T3 fueron, respectivamente, los siguientes: consumos promedios de pasto (g MS/d): 486a, 342b y 387b (P<0,05), niveles de N-NH3 (mg/l): 173, 186 y 224 (P>0,05) y GDP (g/d): 54b, 87a y 56b (P<0,05). La sustitución parcial del alimento concentrado balanceado por morera fresca produjo ganancias diarias de peso superiores a las obtenidas con los otros tipos de suplementos empleados en este experimento.

Palabras-clave
Morera, mata ratón, corderos en crecimiento, estabulación.

 
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Alternative site location: http://www.sian.inia.gob.ve/repositorio/revistas_ci/ZootecniaTropical/ztindice.htm

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