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Descripción
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| Soybean meal (SBM) is the main source of protein in non-ruminant diets. Most published tables of ingredient composition for feed formulation differentiate two types of SBM based on its CP content (regular with 44% CP and high protein with 47 to 48% CP) and do not have into consideration the origin or processing method of the beans. However, available information indicates that processing and origin of the beans might have an effect on the nutritional value of SBM. The present research (n = 345) was conducted to determine the influence of origin (USA; Brazil, BRA; Argentine, ARG) on protein quality and nutrient value of SBM. On DM bases, USA meals (n = 139) had more CP (53.8 vs. 52.8 vs. 51.5%; P < 0.001) and less NDF (8.8 vs. 10.7 vs. 12.0%; P < 0.001) than ARG (n = 121) and BRA meals (n = 85). Sucrose and stachyose content was higher for USA than for BRA with ARG meals being intermediate (8.1 vs. 6.7 vs. 7.5% and 6.4 vs. 5.3 vs. 5.5%, respectively; P < 0.001). The USA meals had more phosphorus (0.79 vs. 0.68 vs. 0.74%; P < 0.001) than the BRA meals with ARG meals being intermediate. Also, BRA meals had more Fe (189 vs. 128 and 133 mg/kg; P < 0.001) but less K (2.3 vs. 2.6 and 2.5%; P < 0.001) than ARG and USA SBM. The USA meals had higher KOH solubility (87.6 vs. 82.3 and 84.3%; P < 0.001), protein dispersibility index (19.8 vs. 17.1 and 15.5%; P < 0.001), and trypsin inhibitor activity (3.9 vs. 3.0 and 3.0 mg/g; P < 0.001) than the ARG or BRA meals. The amino acid profile (% CP) varied with the source of SBM. The content of lys (6.15 and 6.09 vs. 5.96%; P < 0.001), met + cys (2.86 and 2.86 vs. 2.75%; P < 0.001), thr (3.91 and 3.92 vs. 3.83%; P < 0.001), and of 5 key amino acids (lys, met + cys, thr, trp; P < 0.01) were higher for USA and ARG than for BRA SBM. It is concluded that the nutrient composition and protein quality parameters favor the utilization of USA meal over the South American meals in poultry diets. | |
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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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495 |
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Hasta la página
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495 |
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Título de las actas
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Poultry Science, 89 (1): 495 |