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中文摘要：
从患病香鱼的体腔液中分离获得嗜水气单胞菌病原,经培养稀释的菌液,腹腔注射人工感染健康香鱼,出现典型的出血症后,进行血液生理生化指标的测定。结果发现,病鱼红细胞数量为（1.21±0.08）×1012个/L,血栓细胞数量（189.00±5.19）×1012个/L,较健康香鱼红细胞[（2.41±0.16）×1012个/L]、血栓细胞[（380.0±20.00）×1012个/L]呈极显著降低（P〈0.01）,血红蛋白含量呈显著减少（P〈0.05）,而白细胞数量却显著增加（P〈0.05）。染病香鱼总蛋白为（47.56±2.63）g/L,健康鱼为（49.23±3.06）g/L,经检验无显著差异;而碱性磷酸酶、Cl-、Ca2＋等3项血液生化指标值均呈极显著减少（P〈0.01）,乳酸脱氢酶呈极显著增加（P〈0.01）。
英文摘要：
Abstract. The pathological changes were studied in blood and related organs of ayu Plecoglossus altivelis artificially infected with Aeromonas hydrophila which was separated from the coelomic fluid of the dis- eased fish, and then diluted and cultivated. Compared with the quantity of the erythrocyte （1.21±0.08） × 10^12/L and the quantity of thrombocyte （189.00±5.19） × 10^12/L in control fish, the quantity of the e- rythrocyte （2.41±0.16）× 10^12/L and the quantity thrombocyte （380.0±20.00）× 10^12/L were signifi- cantly decreased in the infected fish （P〈0.01）, the quantity of leucocytes greatly increased in the infected fish （P〈0.05）. The total protein of the infected ayu was （47. 56±2. 63） g/L, with the healthy fish （49.23±3.06） g/L, without significant difference. The blood biochemical indices showed that ALP, C1- and Ca^2＋ decreased significantly （P〈0.01） and LDH increased significantly （P〈0.01）.
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