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Descripción
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| A total of 258 samples of soybean meal (SBM) from 3 different origins (coded A, B, and C) were collected in 2 different years and the nutrient content, protein quality and uniformity were evaluated. The SBM (88, 105, and 65 samples from A, B and C origin, respectively) were analyzed in duplicate. Data are presented on dry matter bases and the amino acid (AA) content as a percentage of crude protein (CP). The experiment was conducted as a completely randomized design with 3 treatments. Additionally, the correlation among the different analyzed parameters was determined. In general, the AA content was higher for origin C than for origin B with origin A being intermediate. For lysine and methionine the contents were 7.00 vs. 6.79 vs. 6.87% and 1.53 vs. 1.45 vs. 1.49% (P ¡Ü 0.001) for origin C, B, and A, respectively. Samples from A and C had higher cystine (1.75 and 1.76 vs. 1.68%), threonine (4.45 and 4.48 vs. 4.36%), and tryptophan (1.56 and 1.56 vs. ABSTRACTS OF PAPERS 29 1.51%) content than samples from B (P ¡Ü 0.001). Samples from B had higher NDF content than samples from C with samples from A being intermediate (12.0 vs. 8.4 vs. 9.3%; P ¡Ü 0.001). The Ca (0.43 vs. 0.31 and 0.40%) and K (2.52 vs. 2.11 and 2.21%) content were higher in A samples than in B samples, with C samples being intermediate (P ¡Ü 0.01). The C samples had higher PDI (22.6 vs. 15.2 vs. 20.1%) and TI content (3.9 vs. 2.8 and 3.4 g/kg) than B samples with A samples being intermediate (P ¡Ü 0.001). In addition, C samples had higher KOH (87.6 vs. 83.9 and 84.8%; P ¡Ü 0.001) than A and B samples. The TI content was positively correlated with PDI (r = 0.67; P ¡Ü 0.001) and KOH (r = 0.75; P ¡Ü 0.001). In addition, PDI was positively correlated with KOH (r = 0.52; P ¡Ü 0.001). Finally, lysine (r = 0.31) and methionine (r = 0.40) were lower in those samples with lower KOH (P ¡Ü 0.001). In summary, the origin of the soybean meal influences nutrient content and the value of the parameters used to evaluate protein quality. | |
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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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29 |
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Hasta la página
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29 |
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Título de las actas
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Poultry Science 87 (1) |