Forage plant extracts can be divided into forage plant crude extracts and forage plant refined extracts according to their extraction and separation process and product quality control standards. Forage plant crude extract refers to the simple extract extracted by water or alcohol, without separation unit process, the product form is feed raw material, such as feed raw material - licorice crude extract. Forage plant extract refers to that after crude extraction, through the separation and purification process, the labeled ingredients have quantitative quality control requirements or functional components and even purified extracts, which are generally approved as feed additives according to the registration procedures, such as eucommia ulmoides leaf extract.
Plant extract feed additive means a feed additive product developed in accordance with the feed additive registration procedure with plant extract (active ingredient) as the main active ingredient, such as eucommia ulmoides leaf extract, Epimedium extract, rosemary extract, etc. 
The related products developed from forage plants and their extracts are rich in plant functional active ingredients, which have positive effects on improving animal health, preventing animal diseases and promoting animal growth, and can be used as a substitute for forage antibiotics in animal production.
Eucommia leaves are rich in natural active ingredients, such as chlorogenic acid, flavonoids of Eucommia ulmoides, polysaccharides of Eucommia ulmoides, etc. Eucommia leaves and its extracts have anti-oxidation, anti-microbial, anti-inflammatory, anti-stress, and immune-enhancing functions, and are used for feeding It replaces the most researched and applied forage plants, and successfully developed the feed additive product of Eucommia leaf extract.
Honeysuckle is rich in organic acids, flavonoids, volatile oils, triterpene saponins, iridoid glycosides and multiple functional active ingredients. It has many functions such as antipyretic, antioxidant, anti-inflammatory, antibacterial, and immune enhancement.
The addition of honeysuckle chlorogenic acid extract to the diet can improve the growth performance of broiler chickens infected with mycoplasma.
The addition of honeysuckle extract in the diet can improve the laying performance of laying hens and improve egg quality.
The addition of honeysuckle and scutellaria extracts to the diet can improve the growth performance and nutrient digestibility of fattening pigs, and increase the muscle marbling after slaughter.
