From the point of t he main purpose and effective on the using of additives, we can classify commonly used feed additives into 6 categories.
One is to complement and balance the nutritional Additives,including of amino acid, Vit, and other trace minerals.
Type II is medicated feed additive. It is defined as veterinary drugspremix that filter with carrier or diluent for preventing and cuing animal diseases , including anticoccidial drug class, insect repellent type, class and other antimicrobial growth promoter.
Type III is physiological metabolic regulator Additives. It includes hormones, anti-stress class, herbal medicine class.
Types IV is Increased appetite and digestion additive including of acidifier, sweetener, flavor agent, fragrance, health agents (probiotics), enzyme and buffer, etc..
Type V is a feed additive that strengthen and save the agent class including fungicides, antioxidants, binders, anti-caking agent, emulsifier, silage preservation agent.
Type VI ist othe additives, including coloring agents, feed pigment, activated carbon, zeolite, stone, bentonite, nitric acid rare earth.
In the green of Duck feeding, we should be selected the type of feed additives with high standards and strict requirements, and not use hormones additives that forbidden by the Ministry of Agriculture a list of prohibited drugs, toxic and hazardous substances.