碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 101 / This aim of this study was to determine the optimum growth, water purification and nitrogenous waste balance of Litopenaeus vannamei (white shrimp) and Ulva fasciata cultivated at different stocking density in zero-exchange system.
Five experiments were conducted, which stimulated the capacity of Ulva fasciata to clarify the water in the zero-exchange system. Exp 1, determined the ammonia production rate of white shrimp in the zero-exchange system. Exp 2, determined the clarification capacity of Ulva fasciata on inorganic nitrogen in different densities. Exp 3, determined the clarification capacity of Ulva fasciata on the amount of feeding rate in different densities. Exp 4, determined the clarification capacity of Ulva fasciata on the shrimp farming wastewater in different densities. Exp 5, determine the effect of nitrogenous waste in different densities of Ulva fasciata and white shrimp in zero-exchange system.
In Exp. 1, the shrimp of 5.00 ± 0.01 g were reared in 9 tanks of 10 L of capacity at a stocking densites of 1, 5 and 10. Treatments of shrimp with three replicates. After a week, in S1, S5 and S10, the total ammonia concentration (TAN) increased from 0.01, 0.01 and 0.01 mg L-1 to 1.18, 8.82 and 17.86 mg L-1, respectively. The ammonia production rate of white shrimp in the densities of 0.5, 2.5 and 5 g L-1 were 0.03, 0.05 and 0.05 mg L-1 g-1 D-1, respectively.
In Exp. 2, Ulva fasciata were reared in 32 tanks of 10 L of capacity at a stocking densities of 1, 5 ,10 and 15 g. TAN concentration of inorganic nitrogen testing water were 0, 1, 5 and 10 mg L-1. Treatments of Ulva fasciata and inorganic nitrogen concentration with two replicate. After a week, in U1, U5, U10 and U15, TAN reduced from 4.45, 4.44, 4.38 and 4.51 mg L-1 to 2.99, 1.63, 0.91 and 0.39 mg L-1, respectively. The degradation of TAN of inorganic nitrogen testing water in the densities of Ulva fasciata of 0.1, 0.5, 1.5 and 1 g L-1 were 2.21, 4.01, 4.95 and 5.89 % D-1, respectively.
In Exp. 3, Ulva fasciata were reared in 32 tanks of 10 L of capacity at a stocking densities of 0, 2 ,4 and 8 g. Feeding rate were 0.5, 1, 5 and 10 mg L-1. Treatments of Ulva fasciata and feeding rate with two replicate. After a week, in F0.5, F1, F5 and F10, TAN increase from 0.15, 0.15, 0.15 and 0.15 mg L-1 to 1.64, 2.08, 4.10 and 5.52 mg L-1 , respectively. The ammonia production rate were 0.21, 0.28, 0.56 and 0.77 mg L-1 g-1 D-1 in the amount of feeding rate of 0.05, 0.1, 0.5 and 1 g L-1, respectively. After a week, in U2, U4 and U8, TAN increased from 0.15, 0.15 and 0.15 mg L-1 to 2.21, 1.94 and 1.46 mg L-1, respectively. The degradation of TAN of organic waste water in the densities of 0.2, 0.4 and 0.8 g L-1 were -2.56, -2.94 and -1.87 % D-1
In Exp. 4, Ulva fasciata were reared in 18 tanks of 10 L of capacity at a stocking densities of 2, 4 and 8 g. Shrimp farming wastewater were 100, 80 and 40 %. Treatments of Ulva fasciata and shrimp farming wastewater with two replicate. After a week, in U2, U4 and U8, TAN reduced from 0.53, 0.52 and 0.52 mg L-1 to 0.50, 0.16 and 0.05 mg L-1, respectively. The concentration of Ulva fasciata were 0.2, 0.4 and 0.8 g L-1. The degradation rate of TAN of shrimp farming wastewater were 0.04, 0.52 and 0.67 % D-1.
In Exp. 5, Ulva fasciata and white shrimp under the zero-exchange system, the shrimp were reared in 18 tanks of 10 L of capacity at the stocking densities of 2, 4 and 8, and Ulva fasciata were 2, 4 and 8 g. Treatments of shrimp and Ulva fasciata with two replicate. Ulva fasciata enable the absorption of nutrient from waste water which increase the nitrogen of Ulva fasciata. These results shows that the densities of white shrimp and Ulva fasciata that could achieve the optimum water quality level and growth were 1.25 g L-1 and 0.2 g L-1, respectively,
| Identifer | oai:union.ndltd.org:TW/101NTOU5086020 |
| Date | January 2013 |
| Creators | Yi-Jyun Lin, 林怡君 |
| Contributors | Yew-Hu Chien, 陳瑤湖 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 97 |
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