ANTIOXIDANT FOR ADDING LIVESTOCK FEED USING FORSYTHIA SUSPENSA EXTRACT

摘要

PURPOSE: An antioxidant for supplementing feed using Forsythiae fructus extract and a preparation method for the Forsythiae Fructus extract are provided to show improved daily gain, feed intake, and feed efficiency compared to a control group. CONSTITUTION: An antioxidant for supplementing feed contains Forsythiae fructus extract. A method for preparing Forsythiae fructus extract comprises the following steps of: washing 100g Forsythiae fructus with water to remove dust; placing the washed Forsythiae fructus in a white bag; adding 1,000ml distilled water into the white bag to soak for 20-30 minutes; boiling down the soaked Forsythiae fructus for 150 minutes and obtaining an extract; adding another 800ml distilled water and boiling down for 150 minutes to obtain the extract; adding another 700ml distilled water and boiling down for 150 minutes to obtain the extract; collecting the extracts and concentrating until the volume becomes 100ml; and freeze-drying the concentrate.