Research released on Apr. 28 highlights the impact of soybean meal origin on laying hen performance, focusing on how U.S. Soy offers greater consistency in nutrient composition compared to other global sources. The study points out that consistent ingredient quality is a key factor for poultry nutritionists aiming to maintain steady egg production and feed efficiency.
The findings matter because variations in soybean meal quality can affect the supply of digestible amino acids delivered to hens, leading nutritionists to use wider safety margins and potentially raising costs while increasing variability in flock performance. Ingredient reliability helps ensure that diets meet birds’ nutritional needs without unnecessary over-supplementation.
Soybean meal from different countries shows notable differences in metabolizable energy and digestible amino acid concentrations. University of Illinois research found that U.S.-sourced soybean meal has higher standardized ileal digestibility for lysine and other essential amino acids than meals from Brazil, Argentina, or India when fed to growing pigs. Additionally, U.S.-sourced meals showed less variability in these values than those from Argentina or India, which supports more precise feed formulation.
Performance trials indicate these nutritional differences translate into measurable outcomes for layer operations. For example, hens fed dehulled soybean meal derived from U.S. Soy produced heavier eggs—averaging 64.7 grams—compared with those fed Brazilian (63.5 grams) or Indian (62.3 grams) meals. Hens receiving U.S.-sourced soy also showed improvements in shell strength and interior egg quality.
The research notes that lower variability allows nutritionists to formulate diets closer to actual requirements while reducing expensive safety margins intended as risk management tools against inconsistent ingredient quality.
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Broader implications suggest that sourcing more consistent protein ingredients such as U.S.-derived soybean meal may help producers improve efficiency while controlling costs—a consideration increasingly important as operations seek predictable results across production cycles.


