... chief components are proteinase, amylase,β-glucanase ,etc ,and many kinds of vitamins.Advantages:1. The ... replenish digestive ferments for shortage in young animal, and improve digestibility of protein, starch, etc.2. ... , ox, sheep, poultry, and fish, shrimp, etc, sea-raising species.Usage:Method: It is first mixed ... with a few feed, and then done the ...