This study aimed to determine energy (Exp. 1) and amino acids (AA) [Exp. 2] nutritional value in soybean meal (SBM) from 7 origins [US: Northwest (NW), Northeast (NE), South, and East; Brazil (Bra), Argentina (Arg), and a reimported US (Re-US)] fed o broiler chickens. In Exp. 1, a corn-based reference diet and 7 corn-based diets containing the different SBM sources at 30% were formulated. A total 320 one-day-old male broiler chicks (5/cage) were fed a commercial starter diet from d0 to 14; from d14 to 22 each pen received one of the 8 dietary treatments in a completely randomized design (CRD). On d19 to 22, total excreted feces were collected from each cage and, together with the feed samples, analyzed for dry matter (DM), gross energy (GE), crude protein (CP), crude fat (CF), crude fiber (CFi), and titanium (Ti). In Exp. 2, a nitrogen-free diet and 7 corn starch–based diets were formulated with the different SBM sources at 30%. A total of 416 one-day-old male broiler chicks were used (6 or 7 birds/cage). Each cage was assigned to one of the 8 dietary treatments from either d14 to 21 (50% of cages, group 1) or d21 to 28 (remaining 50%, group 2) in a CRD. On d22 and day 29 (group 1 and 2, respectively), birds were euthanized, ileal digesta was collected and analyzed for CP, AA, and Ti. Data were analyzed using MIXED procedure of SAS with cage as the experimental unit. In Exp. 1, there was no difference (P>0.05) in feed intake, GE digestibility, apparent metabolizable energy, and apparent total tract digestibility (ATTD) of CP, CF, CFi, NDF, and starch across SBM origins. The SBM from Arg had the highest (P<0.05) ATTD of DM (85.98%) while US NE had the lowest (77.43%). In Exp. 2, there were no differences (P>0.05) in the standardized ileal digestibility (SID) of CP, Arg, His, Ile, Leu, Met, Phe, or Trp among the different origins. However, SBM from Bra had the lowest (P<0.05) SID of Met+Cys (88.1%) and Thr (84.34%) and tended to have the lowest (P=0.06) SID Lys (88.58%). Comparing just the US origins, SBM from NW had the lowest (P<0.05) SID of Met+Cys and tended (P>0.05) to have the lowest SID of Met and Thr. In conclusion, the nutritional value of SBM for broilers was not different across U.S. origins with minor differences compared to Argentina and Brazil.

Atoo, A., C. Levesque and J. Perez-Palencia. 2025. Differentiating energy and amino acids nutritional value from soybean meal from various origins fed to broilers. 2025 International Poultry Scientific Forum, Abstract M107.