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Descripción
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| Soybean meal (SBM) is the most important protein source in poultry diets. Most published nutritional tables of ingredients differentiate only 2 types of SBM according to its crude protein (CP) content; regular SBM with 44% CP and high protein SBM with 47 to 48% CP. However, new available information indicates that origin might have an effect on the chemical characteristics and nutritional value of SBM. The present research (n = 262) was conducted to determine the influence of the origin of SBM (USA; Brazil, BRA; Argentine, ARG) on nutritional content and values of parameters used to measure protein quality. On DM bases, USA SBM (n = 134) had higher CP content (54.3 vs. 52.0 and 52.9%; P ¿ 0.001) and less NDF (8.7 vs. 10.6 and 11.8%; P ¿ 0.001) than ARG (n = 77) and BRA (n = 51) meals. Saccharose content was higher for USA and ARG meals than for BRA meal (7.3 and 7.6 vs. 6.8%; P ¿ 0.001). Also, USA SBM had more stachyose + raffinose than ARG and BRA meals (7.7 vs. 7.1 and 7.0%; P ¿ 0.001). The USA and ARG meals had more phosphorus (0.76 and 0.79 vs. 0.68%; P ¿ 0.001) and potassium (2.57 and 2.54 vs. 2.17%; P ¿ 0.001) but less iron (119 and 129 vs. 193 mg/kg; P ¿ 0.01) than the BRA SBM. Also, the USA SBM had higher KOH solubility (87.5 vs. 81.8 and 84.9%; P ¿ 0.001), protein dispersibility index (19.8 vs. 16.8 and 15.1%; P ¿ 0.001), and trypsin inhibitor content (6.1 vs. 4.8 and 5.0 mg/g; P ¿ 0.001) than the ARG or the BRA meals. The amino acid profile varied with the source of SBM. The content of lys (3.34 vs. 3.14 vs. 3.21%; P ¿ 0.001), met + cys (1.56 vs. 1.47 vs. 1.52%; P ¿ 0.001), thr (2.12 vs. 2.04 vs. 2.07%; P ¿ 0.001), and of the 5 key amino acids (P ¿ 0.01) where higher for the USA SBM than for the BRA SBM, with the ARG SBM being intermediate. Based on these results, it is concluded that the nutrient composition and protein quality parameters favor the utilization of USA soybean 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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98th 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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Raleigh, North Carolina |
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Revisores
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Si |
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ISBN o ISSN
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0032-5791 |
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DOI
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Fecha inicio congreso
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20/07/2009 |
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Fecha fin congreso
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23/07/2009 |
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Desde la página
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1 |
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Hasta la página
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232 |
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Título de las actas
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Poultry Science, 88 (1): 1-232 |