Experimental diets (Table 1) were as follows: (1) diet with 400 g / kg SBM (FSBM-0); (2) 1 / 3 replacement of protein from. SBM in diet 1 by protein from FSBM (FSBM-1); (3) 2 / 3 replacement of protein from SBM in diet 1 by protein from FSBM (FSBM-2);? (4) full replacement of protein from SBM in diet 1 by protein from FSBM (FSBM-3); (5) positive control diet with no soy. Protein (PCON). Only the PCON diet included animal plasma fish meal, and casein, as sources of protein. The inclusion of. Soy products in experimental diets 1 through 4 was greater than the concentration typically used by commercial standards. For weaning pigs; the design of those diets was intended to compromise pig performance according to the quality of soy, protein. In contrast the PCON, diet was designed to support pig performance without soy protein as a potential limiting factor. All. Diets were formulated to have similar nutrient content although the, PCON diet had slightly more digestible lysine and less. Crude protein content. All diets met or exceeded the nutrient requirements estimated by NRC (1998). The content of dietary. Amino acids was calculated on the basis of standardized ileal digestibility (Stein et al, 2007). Chemical composition of. Feed ingredients and their digestibility coefficients were taken from NRC (1998), except for SBM and FSBM. Chemical composition. Of SBM was taken from SAND the Soy, in Animal Nutrition Database (Kusina et al, 2008). The FSBM values were those previously. Reported from the same commercial FSBM product for crude protein and amino, acids (Pahm 2008), as well as the product s. " Digestibility coefficients (Pahm, and Stein 2007). The FSBM metabolizable energy value used was 15.06 MJ / kg (Zamora and. Veum, the 1988). Experimental diets were analyzed for crude protein (AOAC 2002; procedure, 990.03) and amino acids (AOAC 2005;,, Procedure 982.30) concentration.The experimental diets were offered immediately after weaning. Pigs were fed to allow ad libitum consumption during the. Experiment and no creep feed was offered to prevent previous exposure to soybean proteins. The diets contained no antibiotics.
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