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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 23, No. 3, 2005, pp. 311-318
Bioline Code: zt05020
Full paper language: English
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 23, No. 3, 2005, pp. 311-318

 es Evaluación de la suplementación proteica durante el crecimiento post destete de corderos a pastoreo
Héctor Rojas, Luís Coronado y Ernesto Hurtado

Resumen

Con el fin de evaluar diferentes fuentes proteicas durante el período de crecimiento de corderos mestizos (West African x Bergamasca), de aproximadamente 90 días de nacido en etapa postdestete con un promedio de peso de 13 kg, en pastoreo de Brachiaria humidicola check for this species in other resources . Se utilizó un diseño completamente aleatorizado con arreglo de tratamientos factoriales (2x3) siendo los factores: sexo (machos y hembras) y dieta (DA = 220 g de follaje de matarratón + 75 g de yuca + 5 g de mineral comercial; DB = 220 g de yacija de codorniz + 75 g de yuca + 5 g de mineral comercial y DC = 300 g de alimento concentrado comercial), con un total de seis animales por tratamiento. Las variables medidas fueron: consumo de alimento, ganancia de peso y características zoométricas (longitud dorsal, alzada a la cruz y perímetro torácico). Se realizó un análisis de varianza por el método de los mínimos cuadrados. Los resultados arrojaron que la interacción dieta x sexo influyó en el consumo de alimento (P<0,01) y la ganancia de peso (P<0,05), siendo el mayor consumo y ganancia de peso para los corderos sometidos a la DC. Las características zoométricas se vieron afectadas por el sexo en su longitud dorsal y perímetro torácico, siendo los machos de mayor tamaño. Se concluyó que lel alimento comercial es superior a la suplementación proteica con materias primas.

Palabras-clave
consumo de alimento, cordero, crecimiento, ganancia de peso.

 
 en Evaluation of proteins supplementation during the post weaning growth in grazing lambs
Héctor Rojas, Luís Coronado y Ernesto Hurtado

Abstract

In order to evaluate different proteins sources during the period of growth of crossbred lambs (West African x Bergamasca), of approximately 90 days of born in post weaning stage with an average of weight ±13 kg, grazing Brachiaria humidicola check for this species in other resources grass. There was in use a with a factorial arrangement of treatments (2x3) on a complete random design; being the factors: sex (males and females) and diet (DA = 220 g foliage of matarratón + 75 g mandioca + 5 g commercial mineral; DB = 220 g grave of quail + 75 g mandioca + 5 g commercial mineral, and DC = 300 g concentrated commercial food), with six animals for treatment. Dependent variables measured were: Food consumption, weight gain, and zoometric characteristics (dorsal length, raised to the cross, and thorax perimeter). An analysis of variance was performed by least squares method. The results indicated that the interaction diet by sex influenced the food consumption (P<0.01) and weight gain (P<0.05), being the major consumption and weight gain for lambs in the DC treatment. The zoometric characteristics were affected by the sex (dorsal length and thorax perimeter), being the males with larger size. It was concluded that the commercial concentrate food was superior than the protein supplementation with raw materials.

Keywords
feed consumption, lamb, growth, weight gain.

 
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