By-O-reg+ is the livestock nutrition brand offered by Advanced Ag Products (AAP), a farm-family-owned company based in Canton, South Dakota. Drawing on its experience as livestock producers, AAP develops feed supplements and additives intended to support animal health, productivity, and nutrient absorption. Its products serve a broad range of species, including cattle, dairy animals, horses, swine, sheep, goats, and commercial, backyard, and show poultry.

The brand’s approach centers on CF 20 coating technology, designed to help deliver essential oils to the lower gastrointestinal tract for targeted release. By-O-reg+ describes its formulations as all-natural and highlights ingredients that are certified organic, along with SFSF certification for product safety and quality. The company says its solutions are supported by university research and on-farm trials.

By-O-reg+ offers products tailored to livestock needs and production stages, including By-O-reg+ PS Concentrate, which is described as helping address health challenges, support performance, and minimize stress. Through its product range, educational news, and customer contact services, the brand aims to provide practical nutrition solutions for producers seeking alternatives to conventional approaches.