Application segmentation delineates the end‑use categories that drive demand for animal functional proteins. The dominant feed segment, accounting for roughly 45 % of market revenue, leverages protein hydrolysates and bioactive peptides to improve growth performance, digestibility, and disease resistance in livestock and aquaculture. The nutraceutical application, contributing about 25 %, targets health‑oriented supplements for companion animals, emphasizing anti‑inflammatory peptides and immune‑modulating factors. The pharmaceutical slice, with a 20 % share, incorporates recombinant growth factors and immunoglobulins into veterinary therapeutics and vaccine adjuvants, reflecting higher unit values despite lower volumes. Finally, the functional foods niche, representing 10 %, integrates animal‑derived peptides into premium pet treats and specialty diets to address specific health outcomes such as joint support or gut health. Together, these application layers form the core of the Animal Functional Proteins market, and the distribution illustrated in the accompanying chart underpins the overall market size.