農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

金銀花富含綠原酸等多酚化合物，具抗菌活性，因此，本計畫評估金銀花萃取物在 生體外對鏈球菌的抗菌活性及在金目鱸和四絲馬鮁對鏈球菌感染症之抗病力影響 ；結果發現，金銀花萃取物在生體外對鏈球菌具抗菌活性；若以0, 1, 2, 3及4%添 加於飼料投餵鱸魚14天或投餵四絲馬鮁28天，皆可有效提高魚對鏈球菌感染症之保 護力，抗病力可提高50%以上。

Lonicera japonica is rich in polyphenol compounds such as chlorogenic acid and has broad antibacterial activity. This project, therefore, evaluated the antibacterial activity of L. japonica extract against Streptococcus iniae in vitro and on disease resistances against streptococcosis in Lates calcarifer and Eleutheronema tetradactylum. The results showed that L. japonica extract has antibacterial activity against S. iniae and if the La. calcarifer was fed with L. japonica extract at doses of 0, 1, 2, 3 and 4% in feed for 14 days or E. tetradactylum was fed with L. japonica extract at doses of 0, 1, 2, 3 and 4% in feed for 28 days then challenged with S. iniae, the disease resistances of all added groups were significantly better than the control group (p<0.01) with the best protective abilities increased by more than 50%.