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Descripción
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| Previous works have demonstrated that the origin of the beans might affect the nutrient content and availability of soybean meals (SBM). In vitro procedures can be used to predict the in vivo ileal digestibility of SBM in broilers. The present research was conducted to determine the influence of origin (USA; Brazil, BRA; Argentine, ARG) on in vitro digestibility of N and DM of SBM. An adaptation of the Boisen and Fernandez (1995) method consisting on a two-step enzymatic hydrolysis simulating digestion in the stomach and small intestine followed by measurement of the remaining residues for the two digestion steps was used. The one-step method (stomach digestion) was an incubation of the SBM samples with pepsin at pH 2. The two-step method consisted in including a second multi-enzyme hydrolysis process (pancreatin at pH 7) to the pepsine digestion to simulate ileal digestibility. On DM bases, the BRA meals (n = 7) had higher CP content (55.9 vs. 54.3 and 53.1%; P < 0.001) than the USA (n = 8) and ARG (n = 7) meals. After the one-step enzymatic digestion (stomach), N digestibility was higher (67.7 vs. 65.8 and 64.9%, P < 0.01) for BRA meals than for USA and ARG meals. Also, DM digestibility (57.6 vs. 56.1 vs. 55.1; P < 0.05) was higher for BRA than for USA meals with the ARG meals being intermediate. When the two-step hydrolysis process (stomach and small intestine) was used, USA SBM had higher N digestibility (88.2 vs. 87.5 vs. 86.4; P < 0.05) than BRA meals and ARG meals were intermediate. Also, DM digestibility was higher (71.0 and 71.5 vs. 69.2; P < 0.05) for USA and ARG than for BRA meals. In conclusion, the in vitro hydrolysis methodology showed that the contribution of the small intestine to total digestion of N and DM is lower for BRA SBM than for USA and ARG meals and that those differences might be associated to different nutritional values for poultry of commercial available SBM differing in origin. | |
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Internacional
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Si |
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Nombre congreso
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99th Poultry Science Association 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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Denver |
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Revisores
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No |
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ISBN o ISSN
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0-8134-2929-3 |
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DOI
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Fecha inicio congreso
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11/07/2010 |
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Fecha fin congreso
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15/07/2010 |
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Desde la página
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669 |
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Hasta la página
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669 |
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Título de las actas
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Poultry Science, 89 (1): 669 |