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研究報告

更新日期: 2012-01-04
點閱數: 1,777

天然鰻苗培育技術之研究

年度 2006
計劃名稱 天然鰻苗培育技術之研究
中文摘要 本研究於2006年4月起分別自北部宜蘭、士林、關渡、鹿港及屏東採樣紅蟲分離菌以Aeromonas hydrophila、Aeromonas spp.、Enterobacteriaceae、Citrobacter spp.及Flavobacterium spp.為主,其次Pseudomonas spp.、Edwardsiella tarda及Vibrio spp.。同時自雲嘉地區鰻苗蓄養場採樣鰻線及水樣分離菌,鰻線菌相以鰻線體中分離之菌相以Aeromonas spp.、Enterobacteriaceae spp.、Citrobacter spp.及Edwardsiella tarda最常出現;水樣分離菌相以Aeromonas spp.、Enterobacteriaceae spp.、Citrobacter spp.、Flavobacterium spp.及Pseudomonas spp.為調查期間皆存在常態菌。紅蟲減菌以臭氧0.15ppm、二氧化氯4 ppm處理30分後對鰻苗適口性及活存率提昇效果較佳。以投餵不同滋養劑添加在鰻粉混合紅蟲對鰻苗活存率最佳在96%,再以腹腔注射攻擊 Edwardsiella tarda結果活存率皆在95%。
英文摘要 The present study sampled at I-Lan,Ch-Lin,Guan-Du,Lu-Karg and Ping-Tong on April, 2006. The dominant bacteria isolated from living-feed ( red worm ) were Aeromonas hydrophila, Aeromonas spp, Enterobacteriaceae,Citrobacter spp and Flavobacterium spp.,followed by Pseudomonas spp,Edwardsiella tarda and Vibrio spp. The dominant bacteria isolated from glass eels were Aeromonas hydrophila, Aeromonas spp,Enterobacteriaceae,Citrobacter spp and Edwardsiella tarda. The dominant bacteria isolated from pond water were Aeromonas spp.,Enterobacteriaceae,Citrobacter spp, Flavobacterium spp and Pseudomonas spp.The wild caught glass eels were predominantly fed with red worms and may therefore infected by pathogenic bacteria via such a food chain. The efficacy of using Ozone 0.15ppm, ClO2 4ppm treated red worm for 30 mins and then fed glass eels could obtain better eating and survival rate. The addition of different enrichments with mixed eel meal and then fed glass eels obtained better survival rate at least 96%. The suwival rate were 95% after a lethal challenge (i.p. injection) with E. tarda .
計畫編號 95農科-14.2.1-漁-F1(1)
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