$780 million is the projected 2026 size of the bacillus feed supplements market, up from $716.3 million in 2025 and forecast to climb to $1.8297 billion by 2036.
An 8.9% CAGR is tied to feed-cost volatility and tighter performance scrutiny at mills, where buyers increasingly want proof that bacillus strains survive processing and improve ration stability.
Dry products are expected to lead forms with a 39.5% share in 2026, while microbial sources hold 37.0%, reflecting demand for easier handling, traceable strain records and premix compatibility.
Poultry is forecast to account for 35.0% of livestock demand and gut health 32.5% of function use, as integrators link additive purchases to feed conversion, flock uniformity and audited trial data.
India and China are seen as the faster-growth markets, with country CAGRs of 8.0% and 6.7%, while competition remains moderately concentrated among suppliers including Cargill, ADM, DSM-Firmenich and Novonesis.