Study examines peanut meal as a soy alternative for laying hens

A new study in Animals tested whether peanut meal could replace soybean meal in diets for older laying hens, a question with obvious relevance as poultry producers look for lower-cost, more regionally available, and potentially more sustainable protein sources. In the 70-day trial, researchers fed 200 Hisex White hens, 72 weeks of age, diets in which soybean meal was replaced by peanut meal at 0%, 25%, 50%, 75%, and 100%, then evaluated production, feed conversion, egg traits, and economics. The broader literature suggests peanut meal can work as a partial, and in some cases substantial, substitute for soybean meal in layers when diets are balanced correctly, but its amino acid profile differs from soy, especially for lysine and threonine, and quality control around aflatoxin remains a central constraint. (researchgate.net)

Why it matters: For veterinary professionals and poultry advisers, the study adds to a long-running body of evidence that alternative plant proteins may help reduce dependence on soybean meal without necessarily sacrificing laying performance. But ration formulation still matters: Extension and prior research note that peanut meal is comparatively lower in threonine, lysine, and methionine, while aflatoxin monitoring is non-negotiable because peanut meal can be a high-risk substrate for contamination if sourcing and testing are weak. (poultry.extension.org)

What to watch: Watch for the full paper’s detailed performance and economic results, and for whether nutritionists treat peanut meal as a regional partial replacement strategy rather than a universal one-size-fits-all soy substitute. (researchgate.net)