頁籤選單縮合
題名 | 本省大型養豬場豬隻死亡原因分析=Incidence and Cause of Mortality in Pigs on Two Intensive Pig Farms in Taiwan |
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作者 | 鍾文彬; 黃瓊儀; 徐磨西; | 書刊名 | 國立屏東技術學院學報 |
卷期 | 6:1 1997.03[民86.03] |
頁次 | 頁1-8 |
分類號 | 437.657 |
關鍵詞 | 豬隻; 死亡原因; 臺灣; Pig; Mortality; Taiwan; |
語文 | 中文(Chinese) |
中文摘要 | 自民國82年9月至85年7月止,以病理學及微生物學方法於本省南部兩個養豬場剖 檢924頭死亡豬隻,豬隻依年齡分為哺乳保育(≦56日齡)及生長肥育(>56日齡)二期; 其死 亡原因分類為呼吸系、消化系、神經系,細菌性疾病、其它及原因不明。其結果摘要如下: 造成哺乳保育豬致死之主要原因為細菌性疾病,A 場佔 52.4%,B 場則佔 56.5%,主要乃因 多發性漿膜炎、敗血症及沙氏桿菌症所致。生長肥育豬之主要致死原因,兩場均為呼吸系疾 病, 分別佔 A 場之 55.8% 及 B 場之 49.5%,造成呼吸系疾病偏高之原因乃放線桿菌胸膜 肺炎所致,分別佔 A 場呼吸系疾病之 73.4% 及 B 場之 74.4%。 放線桿菌胸膜肺炎主發生 於 3-4 月齡豬,A 場呈爆發性質, B 場則為常在性疾病偶有小爆發; 沙氏桿菌症多發生於 保育豬及生長豬且持續發生於各季節; 豬繁殖與呼吸道症侯群 (PRRS) 病毒為造成間質性肺 炎之主因,亦全年發生,且持續存在於兩個豬場,由血清中病毒之分離結果顯示,仔豬 2-4 週齡時開始出現病毒血症, 6-8 週齡時發生比率最高。 豬隻罹患兩種以上病變者皆達 65% 以上,其中以 PRRS 併發敗血症、沙氏桿菌症、多發性漿膜炎或支氣管肺炎者為多,因此, PRRS 雖非主要的直接致死病因,卻是各豬場死亡率居高不下之主要病原。 以上結果與過去 本省之調查差異頗大,造成此種差異之原因可能與 PRRS 病毒之入侵本省有關。 |
英文摘要 | A survey based on pathological and microbiological studies of 924 dead pigs was performed on two intensive pig farms from September 1993 to July 1996. Data were collected from suckling and nursery pigs ≦ 56 days of age and growing and fattening pigs > 56 days of age. The causes of death classified and discussed under the following headings: respiratory system, alimentary system, nervous system, bacterial infections, miscellaneous conditions and unknown. In the age group ≦ 56 days, the main cause of death was bacterial infection. On farm A bacterial infection accounted for 52.4% of deaths and on farm B, 56.5%. Polyserositis, septicemia, and salmonellosis were the major bacterial diseases. In the age group > 56 days, the main cause of death was respiratory disease, which accounted for 55.8% and 49.5% of pigs examined for farm A and B, respectively. The most common respiratory disease was Actinobacillus pleuropneumoniae and accounted for 73.4% and 74.4% of respiratory disease for farm A and B, respectively. On statistical analysis, no seasonal difference was found for any of the diseases. Actinobacillus pleuropneumoniae occurred mainly in 3-to 4-month-old pigs. Salmonellosis found mainly in pigs in the nursery and fattening houses. Persistence of porcine reproductive and respiratory syndrome (PRRS) virus was observed in both pig populations. Over 65% of pigs had at least two diseases diagnosed at necropsy. The most important complication was bacterial infection secondary to PRRS. These results are much different from those previously reported. The differences in the disease incidence possibly reflected the invasion of PRRS virus into swine herds in Taiwan. |
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