Biological functions of Eucommia ulmoides and its application in aquatic animal production
As a medicinal and edible plant,Eucommia ulmoides(EU)contains more than one hundred kinds of active ingredients such as lignans,iridoids,phenylpropanoids,flavonoids and polysaccharides,etc,which have various pharmacological effects as strengthening muscles and bones,lowering blood pressure,blood lipids and blood sugar,as well as antibacterial,anti-inflammatory,antioxidant and liver protection.In recent years,with the development of green aquaculture industry,EU has been gradually applied to aquatic animals and has various effects.Therefore,this paper reviewed the main nutrients,bioactive components and biological functions of the EU bark and leaves,as well as the progress of its application in the feeds of different aquaculture species regarding growth,flesh quality,glycolipid metabolism,and antioxidant and immune functions,explored the feasibility of using EU as ingredient and additive in aquafeeds,and analysed the problems and challenges in the process of its practical application,aiming to provide a basis for further promoting the research of EU in animal production.