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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 21, No. 3, 2002, pp. 219-235
Bioline Code: zt03015
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 21, No. 3, 2002, pp. 219-235

 en Nutritive value of bran and defatted corn germ meal in swine feeding
Nelly López, Claudio F. Chicco y Susmira Godoy


To evaluate bran and defatted corn germ meal (SAGMD), 400 growing pigs (F1 Landrace/Duroc x York/Landrace), with an average weight of 30 kg, were randomly assigned, four groups of 20 animals each, to five levels of corn replacement (0, 10, 20, 30, 40%) by SAGMD in the diets. These were corn-soybean type mash, with 3,270 Kcal/kg estimated metabolizable energy (EME) for the 0% corn replacement level, being isoproteic (15% CP), and had similar levels of lysine, methionine, calcium and available phosphorus. The diets were offered at libitum for a 6 week period. To determine the digestibility of SAGMD, 15 pigs (Landrace/DurocxYork/Landrace) were assigned, in groups of five animals each, to diets with 0, 20 and 40% of corn replacement by the byproduct. The animals were kept in metabolic crates during 14 days, 7 for adaptation and 7 for collection. In addition using corn and SAGMD as the only ingredients of the diet, digestibility of nutrients and EME were determined by total fecal collection. EME was estimated from digestible energy (DE) values, using a prediction equation. Independently of dietary treatments, average daily body gain and feed conversion were 600 g and 1.76 kg, respectively, without differences among treatments. Feed efficiency increased from 2.78 to 3.16, being the regression equation significant (P<0.05). It was concluded that SAGMD may replace corn to a level of 40% in swine diets, without adverse effects on body weight gain. The overall nutrient digestibility decreased (P<0.05) with the 40% replacement of corn by SAGMD. Values of DE and EME, by the direct method, were 2,528 and 2,477 Kcal/kg, respectively.

corn byproducts, swine, feed conversion, digestibility, metabolizable energy

 es Valor nutritivo del afrecho y germen desgrasado de maíz en la alimentación de cerdos
Nelly López, Claudio F. Chicco y Susmira Godoy


Para evaluar la torta de pericarpio y germen desgrasado del maíz (SAGMD) en la alimentación de cerdos, 400 lechones (F1 Landrace/Duroc x York/Landrace) de 30 kg peso vivo, fueron asignados, en grupos de cuatro animales cada uno, a cinco niveles de sustitución del maíz (0, 10, 20, 30, 40%) por SAGMD. Las dietas, tipo soya-maíz, con 3.275 Kcal/kg de energía metabolizable estimada (EME) para la de 0% sustitución del maíz, eran isoproteicas (15% PC), con igual tenor de lisina, metionina, calcio y fósforo disponible fueron suministradas durante 6 semanas. Para la determinación de la digestibilidad del SAGMD se utilizaron 15 cerdos (Landrace/Duroc x Cork/Landrace), de 45 kg peso vivo, divididos en grupos de cuatro animales cada uno. Las dietas fueron las que contenían 0, 20 y 40% sustitución del Maíz por SAGMD. Los animales eran mantenidos en jaulas metabólicas durante 14 días, 7 de adaptación y 7 de recolección. Se determinó además, la digestibilidad de los nutrientes y la EME, del SAGMD y maíz, como únicos ingredientes. La EME se calculó por una ecuación de predicción a partir de la energía digestible (ED). Independientemente de los tratamientos, la ganancia diaria de peso y el consumo promedio fueron de 600 g y 1,76 kg, respectivamente, sin diferencias entre niveles de sustitución. El índice de conversión pasó de 2,78 a 3,16. Para todos los nutrientes, la digestibilidad disminuyó (P <0,05) con el nivel de 40% de sustitución. La ED y EME por el método directo fue de 2.528 y 2.477 Kcal/kg, respectivamente.

subproductos de maíz, cerdos, conversión alimenticia, digestibilidad, energía metabolizable.

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