Dissertation/ Thesis
The Effect of Salinity and Biomass Ratio of Plant to Shrimp on the Nutrient Utilization and Crop Production in a Sea Purslane (Sesuvium portulacastrum) –White Shrimp (Litopenaeus vannamei)Raft Aquaponic System
| العنوان: | The Effect of Salinity and Biomass Ratio of Plant to Shrimp on the Nutrient Utilization and Crop Production in a Sea Purslane (Sesuvium portulacastrum) –White Shrimp (Litopenaeus vannamei)Raft Aquaponic System |
|---|---|
| Alternate Title: | 鹽度以及植物對於蝦之生物量比對海馬齒莧-白蝦共生浮筏系統中營養利用與作物產量之影響 |
| المؤلفون: | Khine Htet Htet Win, 柯婷文 |
| Thesis Advisors: | Chien, Yew-Hu, 陳瑤湖 |
| سنة النشر: | 2016 |
| المجموعة: | National Digital Library of Theses and Dissertations in Taiwan |
| الوصف: | 104 To find out the feasibility of integrating sea purslane (Sesuvium portulacastrum), an edible and widely distributed salt tolerant coastal plant and white shrimp (Litopenaeus vannamei), a low salinity tolerant and most cultured penaeid into a brackish aquaponics production system, two studies were conducted: 1. Salinity effects on the growth and nutrient utilization of three varieties of sea purslane cultured in raft hydroponic system and 2. A research on the optimal biomass ratio of white shrimp and sea purslane culture in raft aquaponic system. First experiment results showed that plant variety did not make any difference on the removal of all nitrogen species and phosphate. Salinity at 10 psu may enhance the nitrification and result in higher concentration of nitrate than at 5 psu and 0 psu. Phosphate concentration was also higher at 10 psu than 0 psu. In conclusion, all varieties of purslane were candidate plants to be used in hydroponic and so in brackish aquaponics system at 10 psu. The second experiment use a factorial combination of 2 levels of shrimp biomass (LS: 3 g; HS: 6 g) X 3 levels of purslane biomass (0P, 0 g; LP, 30 g; HP, 60 g) to formulate 6 treatments: 4 PP (presence of purslane) group-HS:HP, HS:LP, LS:HP, and LS:LP and 2 0P (absence of purslane) group-HS:0P and LS: 0P. The result showed that shrimp biomass affected shrimp rearing performance, namely, shrimp in LS groups had higher percent weight gain and better FCR than those in HS. Plant biomass showed no effect on shrimp growth, but shrimp in HP groups had better FCR than LP groups. The PP groups had only about half of the total nitrogen (TN) as 0Pgroups. This can be attributed to the very low total ammonia concentration, 0.01 mg/L, which resulted from the vigorous nitrification processes occurred in purslane’s root mass and purslane’s uptake of the resulting nitrate. HS had higher TN than LS, so did 0P than PP.PP did not have effect on phosphate accumulation. PP had narrower pH range than 0P. In overall, best shrimp biomass to purslane biomass ratio was 3g shrimp biomass: 60g plant biomass, or the LS:HP treatment since it resulted in high shrimp survival and growth and stable water quality in terms of pH range, reduction of nitrate and total nitrogen. Purslane had had significant effect in improving water quality and consequently, the rearing performance of white shrimp. |
| Original Identifier: | 104NTOU5086023 |
| نوع الوثيقة: | 學位論文 ; thesis |
| وصف الملف: | 70 |
| الاتاحة: | http://ndltd.ncl.edu.tw/handle/7eeyw8 |
| رقم الانضمام: | edsndl.TW.104NTOU5086023 |
| قاعدة البيانات: | Networked Digital Library of Theses & Dissertations |
| الوصف غير متاح. |