農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本試驗以四口200m2水泥池進行，利用四種隔離懸浮固體方式（網套、少量換水、過濾機、收集袋）進行白蝦零換水養殖，試驗結果，不論平均增重、產量、存活率與FCR都以少量換水組表現最好，分別為9.2g、1.08kg/m2、72％與1.4，平均每日換水量為6％；若以生產每公斤白蝦所需水量而言，以不換水方式養殖白蝦搭配網套、過濾機、收集袋使用，相較於換水組可節省75％、69％與71％的水量。相較於過濾機，簡易設計的網套與收集袋在成長上能有較好的表現，並可節省額外的電費及操作上的麻煩。水質方面，養殖初期有氨氮急速上升情形，外加糖蜜可有效降低氨氮濃度。四種隔離懸浮固體方式在養殖過程中都可以維持水質在安全濃度範圍及懸浮顆粒濃度在320ppm以下。

This study used four 200 m2 concrete ponds to culture Litopenaeus vannamei to evaluated four different methods to remove particle under zero of limited water exchange condition. Results indicate that limited water exchange has the best final wt of 9.2 g, survival of 72％, yield of 1.08 kg/m2 and FCR of 1.4 among 4 ponds. To produce one kg of shrimp, water saving were 75％、69％ and 71％ by using net, filter and bag, respectively. Simple net and bag had better performance and saving energy and operating labors compared to filter. The rise of ammonia nitrogen in the early stage of culture can be controlled by adding molasses. All water quality parameters were in the save ranges and solid were below 320 ppm.