对虾白黑斑病的防治技术研究

STUDIES ON PREVENTION AND CURE OF WHITE AND BLACK SPOT DISEASE OF SHRIMP

对虾白黑斑病已被证实为一种生理性疾病，与细菌等生物性病原没有直接关系。根据这一结果作者一改过去以抗菌素为主治疗该病的方法，而采取生态防病，加强对虾营养的措施，在实验室小水体及生产养虾池进行防治试验，取得了满意的结果。实验室小水体试验结果表明，白斑病虾在增强营养、改善水质的条件下，60％以上可恢复健康，但黑斑病虾难以治愈。在实验室小水体试验的基础上提出了一套加强营养、调整水质的综合生态防病措施，连续两年在生产养虾池推广应用均取得明显效果，防治有效率可达70％以上。

White and black spot disease of shrimp is a kind of physiological disease,notcaused directly by bacteria or other microorganisms. More than 60% of diseased shrimp wasable to recover through improving its nutrition and water quality condition. The feed nutrition could be strengthened by adding 3 × 10-3~5 ×10-3Vc in the man-made diet or feedingshrimp fresh shellfish one or two times eath day. In the area where water exchange is limitedand the amount of bacteria is high (＞105cell/ml ), it is recommended for preventing secondinfection,to add 1 ~2ppm oxytetracycline or other antibiotic to the diet,or to use Cl-disinfectant treated culture water, The above measures used in several shrimp farms to preventand cure white and black spot disease of shrimp had effcctive rate of about 70%.