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頁籤選單縮合
題 名 | 室內養蝦的基礎研究(1)--密度及加純氧的影響=Basic Study on Indoor Shrimp Culture (Ⅰ)--The Effects of Stocking Density and the Water Mixing with Pure Oxygen |
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作 者 | 林明男; 曾寶順; | 書刊名 | 臺灣省水產試驗所臺南分所研究報告 |
卷 期 | 2 1998.12[民87.12] |
頁 次 | 頁41-50 |
分類號 | 439.66 |
關鍵詞 | 高密度養殖; 單位面積產量; 活存率; 溶氧; |
語 文 | 中文(Chinese) |
中文摘要 | 在室內養蝦之基本問題上,首先面臨的是室內養蝦成長如何及其放養密度必須提 高才能降低成本,但到底能提昇到何種程度,目前尚無確實資料可考,針對上述根本問題, 進行下列三項基礎研究:1.室內高密度下大正蝦及草蝦之成長及活存,在室內二口40-T水 泥池,池底鋪珊瑚石及麥飯石約10公分,水深一公尺並有循環過濾及不斷電打氣系統,以 500pcs/m 之密度A池放養草蝦,B池放養大正蝦,大正蝦養殖115天,其平均體重自0.3g 成長至2.1g,飼料係數FCR為2.6,總收成量27㎏,累積用水量130噸,累積過濾水量96 噸,活存率66%,養殖期間氨0.3-1.34ppm,亞硝酸0.08-1.1ppm皆在安全範圍,pH一直往 下降至7.00,DO最低尚能維持在3.4ppm,隨機採樣有14%可達上市體型(13g)。草蝦以 同上述之高密度養殖123天,活存率71%比大正蝦高,平均體重2.6g總收成量36.6㎏均比 大正蝦高,FCR 2.9養殖期之氨-氮0.10-0.39ppm亞硝酸-氮0.1-0.57ppm均在安全範圍內, pH最低值7.65,DO之最低值為4.8ppm。打氣及循環水過濾方式養蝦,可預期之「最高單 位面積生產量」大正蝦可視為675g/m ,草蝦916g/m 。2.草蝦三種飼養密度下之成長及 活存比較:在室內10-T長形FRP桶隔成10桶,水深80公分,以FRP桶隔成10個小水槽, 底部以水管並聯使池水相通,頭尾二小水槽放養龍鬚菜,水槽除強力打氣外,並用抽水機抽 取龍鬚菜水槽水經由支管分注各試槽中而加以24h循環曝氣以80pcs/m ,120 pcs /m 及160 pcs /m (40 pcs /m 算術級數遞增)3種密度做雙重比較試驗。試蝦平均體重75g,共36 養殖天數,其活存率以7%之算術級數遞減,考慮成長空間之因素,放養量除考慮尾數外, 亦應考慮biomass。3.氧氣錐使用對室內養殖草蝦成長影響:室內40-T二口池,A池為循環 水養殖,並每天使用氧氣錐添加氧氣,B池亦為循環水養殖但不添加氧氣做為對照池,放養 面積皆為40m ,放養密度皆為64pcs/m ,即每池各放養2,571尾寸苗,氧氣錐為自行設計 者,主要結構為塑膠管及氧管輸送頭,氧氣之輸送是由循環水帶動,氧氣使用量為每日 120kgf/c m 之氧氣桶一支,結果顯示氧氣錐使用平均可增加1.88ppm溶氧,且成長及活存 較佳,且可明顯提高大型蝦收成比率,單位面積產量為1.25kg/m ,即1.25公噸╱公頃, 室內全年可養殖,以一年可養三季計則每年的生產量為37.5公噸╱公頃╱年,有很大的發 展潛力,值得發展。 |
英文摘要 | This study was aimed to determine the groth and survival conditions of penaeid shripms under extremely high stocking density in captivity in the indoor cement concrete pond. The results are summarized as follows: 1. Each species of Penaeus chinensis and Penaeus monodon was held under extremely high stocking density of 500pcs/m in the ponds paved with 10cm of corallite and zeolite on bottom. The ponds were 40-T of capacity with a circulating filter tank of 3-T capacity and the water depth were 100cm. 1-1. Penaeus chiensis: The initial body weight of shrimp was calculated 0.3 g in average. After 115 days for this test, a 66% of survival was found with a final body weight 2.1g, FCR(feed conversion rate) was 2.6 and a total harvest volume of 27 kgs. The accumulating water consumption was 130-T, the total water filtered was 96-T. In the period of cultivation, the ammonia-N and nitrite- N in water were found to be ranging from 0.31 tol.45ppm and 0.08 tol.10ppm, respectively. The lowest values of pH and D.O. were determined to be 7.00 and 3.4 ppm, respectively, with a decreased trend of pH as time elapsed. On harvesting day, 14% of shrimp collected were reached to market size of 13g in body weight. 1-2. Penaeus monodon: The initial body wight of shrimp was calculated 0.19g in average. After 123 days for this test, a 71% of survival was found with a final body weight 2.6g, FCR was 2.9 and a total harvest vulume of 36.6g. In the period of cultivation, the ammonia-N and nitrite-N in water were found to be ranging from 0.01 to 0.39ppm and 0.10 to 0.57ppm, respectively. The lowest values of pH and D.O. were determined to be 7.65 and 4.8ppm, respectively, with a decreased trend of pH as time elapsed. At the end of this experiment, the unite yield for Penaeus chinensis and Penaeus monodon was 675g/m and 916g/m , respectively. 2. The effects of various stocking density on growth and survival of Penaeus monodon. A 10-T FRP tank with 100L capacity, was divided into 10 individual tanks marked from tank 1 to 10. Tank 1 and tank 10 were stocked with sea weed, Gracilaria sp, to keep water clean and to limit ammonia-N and nitrite-N. Each of tanks shared the same drainage of PVC pipe and was kept in circulating running condition by a pumping system. 80pcs/m , 120pcs/m and 160 pcs/m i.e. 40 individuals in gradient, was tested. The test was conducted for duplicates for all groups. The shrimp used for test was 7.5g in body weight. After 36 days, we realized that the higher the stocking density was found to be associated to the lower survival of the shrimp with a gradient difference of 7%. 3. A significant result was obtained by mixing the water with pure oxygen for the effects on shrimps. By comparing with the control group, shrimp kept in the test pond, installed with a pure oxygen-water mixing system, got better survival and growth. On harvesting day, 27% of shrimp collected from the test pond reached to the market size of 24g in body weight, while only 9% of control group reached to the same size. |
本系統中英文摘要資訊取自各篇刊載內容。