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Agricultura Técnica
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0365-2807
EISSN: 0365-2807
Vol. 66, No. 3, 2006, pp. 318-323
Bioline Code: at06034
Full paper language: Spanish
Document type: Note
Document available free of charge

Agricultura Técnica, Vol. 66, No. 3, 2006, pp. 318-323

 en Replacement of broiler litter by cereal and legume grains in winter steer finishing rations
Rojas, Claudio G. & Catrileo, Adrián S.

Abstract

In the Carillanca Regional Research Center of the National Agricultural Research Institute located in Temuco, for 86 days during the 2003 winter season a study, which used 35 Overo Colorado steers, of 19 to 20 months of age and 367 kg initial liveweight, was conducted in order to evaluate the replacement of broiler litter by vegetal protein sources in steers finishing rations. Treatments were: T1: pasture silage plus broiler litter and ground barley grain ( Hordeum vulgare check for this species in other resources L.); T2: pasture silage plus ground oats grain ( Avena sativa check for this species in other resources L.) and barley grain; T3: pasture silage and whole lupin grain ( Lupinus albus check for this species in other resources L.) and whole oats grain; T4: pasture silage plus ground oats and urea; and T5: pasture silage plus ground barley grain and urea. The experimental design was a randomized complete block with seven replicates using the block factor for weighting. Results indicated daily liveweight (LW) gains (kg d-1) of 1.0 bc, 0.916 cd, 0.825 d, 1.050 ab, and 1.141a (P ≤ 0.05) for treatments 1 to 5, respectively. Daily dry matter intake (kg d-1) was 8.7, 7.2, 7.3, 8.0, and 7.9 for each treatment, respectively, while feed conversion efficiency (kg of feed kg-1 LW produced-1) was 8.7, 7.9, 8.8, 7.6, and 6.9 respectively. At 2003 prices the cost of the rations ($ kg-1 LW-1) were 533, 575, 545, 434 and 522 for each treatment, respectively. It was concluded that the diet with pasture silage plus ground oats and urea, and the diet with pasture silage plus ground barley and urea can replace broiler litter with productive and economics advantages in steer finishing rations.

Keywords
broiler litter, steers, liveweight.

 
 es Reemplazo de la cama de broiler por granos de cereales y leguminosas en raciones de engorda invernal de novillos
Rojas, Claudio G. & Catrileo, Adrián S.

Resumen

En el Centro Regional de Investigación Carillanca del Instituto de Investigaciones Agropecuarias (INIA) ubicado en Temuco, se realizó un estudio durante 86 días de la temporada invernal de 2003, para lo cual se utilizaron 35 novillos Overo Colorado, de 19 a 20 meses de edad y 367 kg de peso vivo inicial, con el objetivo de evaluar el reemplazo de la cama de broiler por fuentes proteicas vegetales en raciones de engorda de novillos. Los tratamientos correspondieron a: T1: ensilaje pradera, cama de broiler y grano de cebada ( Hordeum vulgare check for this species in other resources L.) molido; T2: ensilaje pradera, granos de avena ( Avena sativa check for this species in other resources L.) y de cebada molidos; T3: ensilaje pradera, grano de lupino ( Lupinus albus check for this species in other resources L.) entero y avena entera; T4: ensilaje pradera, grano de avena molido y urea; y T5: ensilaje pradera, grano de cebada molido y urea. El diseño experimental utilizado fue bloques completos al azar, con siete repeticiones, usando el factor bloque para peso. Los resultados indicaron ganancias diarias de peso vivo (PV) (kg d-1) de 1,0 bc; 0,916 cd; 0,825 d; 1,05 ab y 1,141 a (P ≤ 0,05), para los tratamientos 1 al 5, respectivamente. Los consumos diarios de materia seca (kg d-1) correspondieron a 8,7; 7,2; 7,3; 8,0 y 7,9; la conversión de alimentos (kg alimento kg-1 de incremento de PV-1) fue 8,7; 7,9; 8,8; 7,6 y 6,9 y los costos de las raciones ($ kg-1 PV-1) fueron de 533; 575; 545; 434 y 522 para cada uno de los tratamientos, respectivamente. Se concluyó que la ración con ensilaje de pradera más avena molida y urea y la ración con ensilaje de pradera más cebada molida y urea pueden reemplazar la cama de broiler con ventajas productivas y económicas en raciones de engorda de novillos.

Palabras-clave
cama de broiler, novillos, incremento de peso.

 
© Copyright 2006 - Instituto de Investigaciones Agropecuarias, INIA (Chile).
Alternative site location: http://www.inia.cl/at/agritec.htm

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