Study adds evidence for black soldier fly meal in broilers

CURRENT BRIEF VERSION: 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 at moderate inclusion levels. In the trial, 160 Ross 708 broilers were fed diets in which black soldier fly larvae meal replaced 0%, 20%, 40%, or 60% of soybean meal on an equivalent basis from day 10 through day 42. The broader takeaway fits with a growing body of poultry nutrition research: lower-to-moderate inclusion rates of insect meal tend to perform well, while higher replacement levels can become more variable depending on formulation, digestibility, fat content, and chitin load. That pattern also lines up with other broiler data showing low-level inclusion of full-fat Hermetia illucens or Tenebrio molitor meal at 2% to 4% did not affect growth, feed conversion, or mortality, while increasing breast yield; and with low-soybean-meal work showing that simply cutting soybean meal can carry its own risks for mortality, nutrient utilization, and cecal microbiota if diets are not carefully balanced. (mdpi.com)

Why it matters: For veterinary professionals and poultry advisers, the study adds to the evidence that insect-derived proteins are moving from sustainability concept to practical feed tool. That matters as producers look for alternatives to soybean meal amid price volatility, import dependence, and pressure to reduce feed’s environmental footprint. It also matters because black soldier fly ingredients are already part of the regulatory conversation and, in some markets including the EU, processed insect proteins are authorized for poultry feed under specific conditions. The clinical angle is that performance alone isn’t the whole story: vets will want to watch gut health, intestinal morphology, fatty acid profiles, ingredient consistency, and how different inclusion rates affect flock outcomes under commercial conditions. That caution is supported by studies showing some insect meals can shift meat traits or serum lipids without obvious performance losses, and by non-poultry BSF work in fish suggesting there may be a threshold above which gut tissue changes become less favorable even when growth remains stable. (mdpi.com)

What to watch: Expect follow-up work to focus on optimal inclusion rates, economics, microbiome effects, and whether commercial-scale diets can reproduce these results across breeds, production systems, and insect processing methods. It will also be worth watching whether insect ingredients are used not just as soybean meal replacements, but as functional feed tools that may support resilience or feed intake in other species, as recent piglet work with live mealworm larvae has suggested. (pubmed.ncbi.nlm.nih.gov)