... , may be a partial substitute for fish meal ,in order to reduce costs. 2. Rich in a variety of vitamins and carotenoids, especially ... only help to digestion ,but also improve certain enzyme activity in the digestive tract. 4. Enhance immunity, adsorption Pathogenic factor, ... improve animal health. It can be used in diets for various animals, poultry, fish and shrimp, and the usage(kg) is ...