Black soldier fly larvae meal shows promise in broiler diets

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A new study in Veterinary Sciences suggests black soldier fly larvae meal could replace a meaningful share of soybean meal in broiler diets without hurting growth, carcass traits, meat quality, or routine blood chemistry, at least under the conditions tested. Researchers evaluated 160 Ross 708 broilers fed diets in which black soldier fly larvae meal replaced soybean meal at 0%, 20%, 40%, or 60% on an equivalent basis across starter, grower, and finisher phases. The paper adds to a growing body of poultry nutrition research showing insect-derived ingredients can perform comparably to conventional protein sources, though results still vary by inclusion level, processing method, and formulation. Low-inclusion work with full-fat Hermetia illucens and Tenebrio molitor meals has likewise reported no meaningful effects on growth, feed conversion, mortality, or overall carcass quality, while still showing some shifts in breast yield, meat water-holding traits, serum lipids, and intestinal measurements that suggest ingredient choice and dose still matter. (mdpi.com)

Why it matters: For veterinary professionals and poultry advisors, the study is less about a single ingredient swap and more about feed resilience. Soybean meal remains a standard protein source, but cost, supply, and sustainability pressures keep interest high in alternatives. Prior broiler work has found that moderate black soldier fly inclusion can support performance and health, while higher inclusion levels may start to challenge feed efficiency or gut morphology, likely because nutrient profile, chitin content, substrate, and degree of defatting all matter. That caution also fits with broader low-soy formulation research: one broiler study found that simply reducing soybean meal by 10% increased mortality, feed intake, and impaired fat utilization, while altering cecal microbiota toward more Helicobacter and Campylobacterota, underscoring that replacing soybean meal is not nutritionally neutral unless the alternative is well balanced. In the U.S., black soldier fly ingredients have moved further into regulated feed use, which makes the clinical and production evidence increasingly relevant to field practice. (link.springer.com)

What to watch: Expect follow-up attention on optimal inclusion rates, processing standards, economics, and how regulators and commercial formulators handle black soldier fly ingredients across poultry systems. It will also be worth watching whether future trials can separate simple protein replacement effects from broader gut-health or meat-quality effects, since adjacent feed-additive work in broilers has shown that diet changes can influence microbial profiles, intestinal function markers, and meat quality even when topline production metrics look stable. (link.springer.com)