As feed costs rise and sustainability becomes a priority, soybean hulls are emerging as a valuable ingredient in broiler and layer diets. Often overlooked, these hulls—the outer coating of the soybean seed—are rich in fiber and moderately high in protein, offering benefits beyond simple bulk.
Nutritionists highlight the fiber in soybean hulls as a key asset. Insoluble but fermentable, it promotes gizzard development, supports smooth digestion, and enhances feed efficiency. When formulated with analyzed energy and amino acid values, hulls can optimize gut function and even improve litter quality, rather than serving merely as filler.
In broilers, small inclusions of 2–4% in starter diets stimulate gizzard activity, lower pH, and enhance starch and protein breakdown. Moderate levels of 3–5% in grower and finisher diets maintain growth while improving gut consistency and producing drier droppings, which helps reduce footpad issues. However, excessive inclusion above 7–8% without adjusting energy or adding enzymes can slow growth, underscoring the importance of careful balance.
For layers, soybean hulls help manage feed intake, improve satiety, and maintain healthy gizzard function, supporting consistent egg production. Typical inclusion rates range from 5–10%, though some operations safely use up to 15–20% with proper nutrient and enzyme adjustments. Egg quality generally remains stable, and feed costs per dozen eggs can even improve with moderate hull use.
Enzyme supplementation—particularly beta-mannanase and xylanase—enhances the value of soybean hulls by improving nutrient release and energy recovery. Particle size is also critical: coarser hulls stimulate gizzard activity, while finely ground hulls blend better in pelleted feeds. Many poultry nutritionists recommend including hulls early in broiler growth phases or post-peak in layers to support gut health, feed efficiency, and long-term performance.
By integrating soybean hulls thoughtfully, producers can optimize poultry diets for both economic and physiological benefits, turning what was once a byproduct into a strategic feed tool.
