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Descripción
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| A trial was conducted to test the effect of micronization (very fine grinding) of soybean meal (SBM) and fullfat soy bean (FFSB) on coefficient of ileal apparent digestibility (CIAD) of dietary components and digestive traits of piglets. The experimental design was completely randomized with 4 treatments arranged factorially (SBM and FFSB, micronized and ground) and six replicates each (one piglet). Four isonutritive diets (2,490 kcal NE/kg and 1.28% available Lys) were fed from 23 to 45 d of age. The main difference among them was the mean particle size of the soy bean product used (47 and 881 ?Ìm for the SBM and 41 and 778 ?Ìm for the FFSB, micronized and ground, respectively). In all cases the source tested supplied 5.5% of the dietary protein (CP). The CIAD of dietary components, the pH of the gastrointestinal tract (GIT) and the weight of digestive organs and spleen were measured at 45 days of age. Particle size did not affect any trait studied (P¡Ý0.10). Type of soy bean product had no effect on CIAD of CP or amino acids (P¡Ý0.10). However, piglets fed the SBM diets had higher CIAD of organic matter (0.765 vs. 0.705) and gross energy (0.761 vs. 0.711) than piglets fed the FFSB diets (P¡Ü0.001). The pH of the different segments of the GIT was not affected by the soybean product used (P¡Ý0.10). Pigs fed SBM had heavier pancreas (2.3 vs. 1.9 g/kg body weight; P¡Ü0.05) and livers (35.9 vs. 32.7 g/kg body weight; P¡Ü0.01) than pigs fed FFSB. The poor nutrient digestibility of pigs fed FFSB as compared to pigs fed SBM might be related to the conditions applied during processing of the bean. It is concluded that pigs fed soy bean meal had better digestibility of organic matter and gross energy than pigs fed FFSB and that fine grinding of the two soy protein sources does not affect nutrient digestibility. | |
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Internacional
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Si |
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Nombre congreso
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97th Poultry Science Annual Meeting |
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Tipo de participación
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960 |
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Lugar del congreso
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Ni?¢gara Falls, Canad?¢ |
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Revisores
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Si |
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ISBN o ISSN
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1525-3171 |
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DOI
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Fecha inicio congreso
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20/07/2008 |
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Fecha fin congreso
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23/07/2008 |
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Desde la página
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93 |
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Hasta la página
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93 |
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Título de las actas
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Poultry Science |