Dry is expected to remain the largest form segment, accounting for 38.5% of the Postbiotic Feed Supplements Market in 2026. Among sources, Microbial leads with a 36.0% share, while Poultry represents the largest livestock segment, accounting for 38.5% of the market. The competitive landscape includes prominent companies such as Cargill, ADM, and Kemin Industries, alongside Alltech, Novonesis, Adisseo, and Trouw Nutrition (Nutreco).