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題 名 | 臺灣地區豬繁殖與呼吸道症候群(3)--流行病學調查=Porcine Reproductive and Respiratory Syndrome(PRRS) in Taiwan(3)--Epidemiologic Survey |
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作 者 | 鍾文彬; 吳大中; 林敏雯; 黃瓊儀; 張志成; 張文發; 楊平政; | 書刊名 | 中華民國獸醫學會雜誌 |
卷 期 | 23:1 1997.02[民86.02] |
頁 次 | 頁43-50 |
分類號 | 437.657 |
關鍵詞 | 豬繁殖與呼吸道症候群; 流行病學; 臺灣; Porcine reproductive and respiratory syndrome; PRRS; Epidemiology; Taiwan; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗以血清學及病毒學方法於本省豬場進行豬繁殖與呼吸道症候群(PRRS)之流 行病學調查;並以單株抗體初步檢測本省 PRRS 病毒株之抗原性。首先,於本省 28 家豬場 逢機採取種豬及生長肥育豬之血清各 12 頭以上, 以間接免疫螢光抗體染色法 (IIF) 檢測 血清中之 PRRS 病毒抗體力價,結果顯示, 豬場之陽性率為 96.4%(27/28),而豬隻之陽性 率亦高達 80.2%(916/1143)。 另外,於 38 家豬場各採取 6-9 週齡豬隻血清 10 頭以上, 檢測血清中之 PRRS 病毒,38 家豬場中 36 家 (94.7%) 為陽性,而所有受檢豬隻之陽性率 為 62.2%(428/688)。另外,利用三種不同之單株抗體 (SDOW17, VO17, EP147),以 IFA 法 檢測本省所分離出的 70 株 PRRS 病毒,結果發現,結果發現,本省 PRRS 病毒可分成三種 形式,8 株僅與 SDOW17 反應,此與歐洲病毒株較相似; 另 8 株與以上三種單源抗體皆呈 陽性反應, 此與美國病毒株較相似; 其它 54 株則只與 SDOW17 及 VO17 反應, 為本省 PRRS 病毒株所特有。 以上結果顯示,PRRS 已廣泛流行於本省豬場,且於 6-9 週齡豬隻出 現病毒血症的比率極高;本省 PRRS 病毒株與歐洲和美國之病毒株在抗原上可能有相當程度 的差異性。 |
英文摘要 | An epidemiologic survey of porcine reproductive and respiratory syndrome (PRRS), by serological and virological methods, was conducted on pig farms in Taiwan. Sera were collected from at least 12 fattening pigs and 12 sows from 28 different swine herds. Indirect immunofluorescent antibody tests (IIF) were performed on the sera to detect the antibody to PRRS virus (PRRSV). Of the 1143 sera from the 28 swine herds, 916 sera (80.2%) were positive. Twenty seven (96.4%) of the 28 farms had at least 42.2% of pigs with positive sera. Sera were also obtained from at least ten 6- to 9- week-old pigs from each of 38 pig farms. Of 688 sera tested, PRRSV was isolated from 428 sera (62.2%). Thirty six (94.7%) of the 38 farms had 2 or more pigs being PRRSV positive. The antigenicity of the isolated PRRSV strains was determined based on the reaction with monoclonal antibodies (SDOW17, VO17 and EP147). Unlike American PRRSV strains which react with all three monoclonal antibodies and European strains which react with SDOW17 only, 54 of 70 PRRSV Taiwan strains tested react with SDOW17 and VO17 but not with EP147. The results indicate that PRRSV is wide spread in Taiwan and there is high percentage of pigs with PRRS viremia at the age of 6- to 9- week. The antigenicity of PRRSV strains isolated from the pigs in Taiwan is worthy of note and further study is warranted to determine if there are significant differences between American, European and Taiwan PRRSV isolates. |
本系統中英文摘要資訊取自各篇刊載內容。