The purpose of adding and using supplemental premixes has changed noticeably over recent years and may well continue to do so in the future.

Specialty products
The types of premixes that are included in pet food vary widely. The most common premixes are vitamin and trace mineral blends. Within the last several years, premixes now include speciality products such as nutraceuticals, extracts, antioxidants, herbs etc.

Compared to the livestock industry, the pet food sector is often willing to spend more money on the inclusion of speciality ingredients in the premixes and blends, which is directly reflected in the costs of those premixes being significantly higher.

See also:
Article - Premixes add value to pet food