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ARS Home » Southeast Area » Raleigh, North Carolina » Food Science and Market Quality and Handling Research Unit » Research » Research Project #439188

Research Project: Valuation for Differentiation of NC Soybean Meal in Poultry and Livestock Feed Formulation

Location: Food Science and Market Quality and Handling Research Unit

Project Number: 6070-43440-013-003-N
Project Type: Non-Funded Cooperative Agreement

Start Date: Mar 1, 2021
End Date: Feb 28, 2022

Objective:
1. To calculate the marginal price change for use, the parametric cost ranging, and shadow price among soybeans of different origins varying in nutrient composition and quality for each one of the main diets for poultry, swine, and aquaculture. 2. To determine the differentiation value for the NC soybean based on overall average nutrient content, quality, and the impact of changes on price of other common protein feedstuffs on shadow prices of NC soybean. 3. To establish potential differences and benefits of NC soybean based on quality parameters such as urease activity, protein dispersibility index, KOH protein solubility, trypsin inhibitor activity and heat damage index.

Approach:
Specific differences in soybean meal (SBM) nutrient content between the Corn Belt and US Gulf are not available. Generally, the data from all US SBM has been published without segregating by origin. A total of 30 samples from each one of these regions and SBM produced in NC will be gathered and analyzed with NIRS. After NIRS analyses, 12 SBM samples from each one of the three regions (36 samples total) will be sent for analysis for all antinutritional factors, oligosaccharides, KOH, and PDI to Eurofins lab and DairyOne Labs. Representative samples (1-3 kg) of SBM from 3 regions (Blacklands, Coastal Plain, and Piedmont) will be collected by specialized quality control personnel at the production site to guarantee source identity. At arrival to the laboratory, samples will be stored in hermetic plastic containers until analyses. The samples will be ground using a hammer mill (Model Z-I, Retsch, Stuttgart, Germany) fitted with a 0.50mm screen and analyzed for moisture by oven-drying (method 930.15), ash with a muffle furnace (method 942.05), and nitrogen (N) by Kjeldahl (method 988.05) as described by the AOAC International (2005). Crude protein (CP) content will be calculated as N x 6.25. Ether extract (EE), CP, crude fiber, neutral detergent fiber (NDF), acid detergent fiber (ADF), and amino acid content will be determined using NIRS using a FOSS 2500 machine with two reading for each sample, 60 per origin, for a total of 180 NIRS readings (Fontaine et al., 2001). Non-standardized spectra will be submitted to calibration models developed by Adisseo, Evonik, Trow Nutrition, DSM, and Cargill. Sucrose and oligosaccharides (stachyose and raffinose) will be determined as indicated by de Coca-Sinova et al. (2008). Macrominerals and trace elements will be analyzed as described by Hermida et al. (2006). Urease activity (mgN/g) will be measured and KOH as described by Arabaand Dale (1990). The PDI will be determined according to method Ba 10-65 of the AOCS (2000) using a Hamilton blender (Model G936, VOS Instrument, Zaltbommel, The Netherlands), and TI activity (TIA), expressed in mg/g DM, according to the method of Hamerstrand et al. (1981). The HDI will be determined using the AMINORED method as proposed by Evonik (2010). Data will be analyzed as a completely randomized design using the GLM of JMP (SAS Institute Inc., 2018). The main effect of the model will be the origin of the SBM. If the model is significant, the Tukey test will be used to make pairwise comparisons between treatment means.