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題 名 | 鱒魚病材分離Lactococcus garvieae菌之生物學性狀=Biological Properties of Lactococcus Garvieae Isolated from Diseased Rainbow Trout |
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作 者 | 陳清; 柯浩然; 詹益波; 劉培柏; | 書刊名 | 臺灣省家畜衛生試驗所研究報告 |
卷 期 | 33 1997[民86.] |
頁 次 | 頁79-85 |
分類號 | 439.66 |
關鍵詞 | 鱒魚; 眼球出血; Rainbow trout; Hemorrhage; Lactococcus garvieae; Ampicillin; Amoxicillin; |
語 文 | 中文(Chinese) |
中文摘要 | 民國八十五年三∼四月間,在臺灣北部某約一公頃流水式養鱒池,飼養 12∼13 萬尾鱒魚,發生 400 ∼ 500 尾斃死病例。現場病例可見病魚眼球混濁突出、出血及潰瘍。 剖檢病變:肝臟褪色,膽囊腫大,脾臟、腎臟均腫大,呈黑暗紅色。以血液培養基、腦心浸 膏培養基、胰蛋白培養基及 SS 培養基培養分別置於 25 ℃、37 ℃及 45 培養 18 ∼ 24 小時之結果,除在 SS 培養基及置於 45 ℃之培養基均不發育外,在其他各供試培養基均呈 現幾近單一形態菌落, 以 3% KOH 測試結果為格蘭氏陽性菌。 鏡檢呈雙球性或短鏈狀,以 API 32 Strep 快速鑑定結果, 判定為 Lactococcus garvieae。 藥物敏感性試驗結果, ampicillin 及 erythromycin 效果最好。 本病例為臺灣從鱒魚病材分離出 Lactococcus garvieae 之首次報告。 |
英文摘要 | During the months of March and April of 1996, about four to five hundreds of rainbow trout died in an aquacultrue pond, about one hectare in size and cultured 120-130 thousands of rainbow trouts, located in the northern part of Taiwan. The symptoms on the outlooks were hemorrhaged eyeballs with ulcer in the surrounding areas. Autopical examinations found degenerated liver color, enlargement of bile bladder, dark spleen, and kidney enlargement and darkness. The isolated bacteria wee cultured with blood agar, brain heart infusion agar, tryptic soy agar, and SS agar. They grew in the first three media at 25 ℃ and 37 ℃ but not at 45 ℃. On the contrary, the bacteria did not growth in SS agar at all under the three different temperature conditions. The colonies on brain heart infusion agar were uniform in size and appeared with milk white color. They showed no hemolysis on blood agar culture. Gram were positive by 3% KOH examination; catalase and oxidase tests were all negative. In light microscope examination, they appeared like bicoccus or short chain and did not have a flagellum. Additional observations by electron microscope found pili-like substance. According to the API 32 Strept tests, Lactococcus garvieae was identified. When pathogenicity tests using mice and Cyprinus carpio were conducted, the bacteria could not cause mortality in either case. The antibiotic sensitivity tests performed revealed that the bacteria were more sensitive to ampicillin and erythromycin than amikacin, chloramphenicol, chlortetracycline, lincomycin, gentamicin, rifampicin, tetracycline, trimethoprim, nalidixic acid, nitrofurantoin, kanamycin, oxytetracycline and streptomycin. This is the frist report of the Lactococcus garvieae isolated from rainbow trout in Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。