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Building and Researching a Fish Egg Incubation System with Recycled Water
|關鍵字:||Incubation system;孵化系統;flow rate;water quality;Ctenopharyngodon idellus eggs;水流量;水質;草魚卵||出版社:||農業機械工程學系||摘要:||
This study established a recycled water incubation system which was according to the traditional incubation system. This system could regulate and control the temperature and dispose the recycled water. Hereby, the testing steps and water quality data for incubating Ctenopharyngodon idellus eggs were given to reference.
The experiment device within Semi-Pelagic Ctenopharyngodon idellus eggs was set up to figure out the differences of properties between the nature Ctenopharyngodon idellus eggs and substitute eggs. Moreover, the related curve of the water flow and the pushed height of the plastic grains, a kind of substitute egg, in the incubation tank was found, and then was added a function F(X)=0.6072 * X + 35.3931 to establish the curve of Ctenopharyngodon idellus eggs in the incubating tank. Incubating Ctenopharyngodon idellus eggs needs 22-24 hours and must control the temperature at 25±0.5℃. When we tested the air and water flow rate to the floating condition of Ctenopharyngodon idellus eggs in the incubating tank for seeking the best distribution condition of eggs, we found air flow rate at 3.0 L/min and water flow rate at 8.0 L/min are the optimum distribution condition of Ctenopharyngodon idellus eggs. As to the water quality in this system of incubating Ctenopharyngodon idellus eggs, the concentrations of NH3-N and NO2--N were controlled respectively under 0.18 ppm and 0.11 ppm. The concentration change of NO3--N shall be kept at the range of 30ppm. The incubation rate of this system is 21.5% more than the traditional system, and the damage rate is 0.7%.
試驗魚卵使用半浮性草魚卵，試驗中建立替代卵與草魚卵的相關物性，並得到塑膠粒替代卵在孵化槽中水流量與推起高度關係曲線加上函數F（X）＝0.6072 *X + 35.3931，可推導出草魚卵在孵化槽中的相關曲線。草魚卵的孵化過程，水溫控制在25±0.5℃，孵化時間22-24小時完成。探討孵化槽內打氣量、水流量對草魚卵的浮動情形，尋求較佳的魚卵分佈，發現在打氣量3.0 L/min，水流量8.0 L/min，草魚卵的分佈最好。本系統在草魚卵孵化過程中水質NH3-N、NO2--N濃度的控制，分別在0.18ppm及0.11ppm以下，NO3--N濃度的變化維持在30ppm的範圍。本系統在草魚卵的孵化率比傳統流水式高出21.5％，破損率在0.7％。
|Appears in Collections:||生物產業機電工程學系|
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