Effect of tank geometric shape ratio on productivity of Recirculating Aquaculturalsystem [electronic resource]
Language: English Summary language: Arabic Description: P.985-998Other title:- تأثير نسبة الشكل الهندسي للحوض (القطر:العمق) على انتاجية اعادة تدوير المياه [Added title page title]
- Misr Journal of Agricultural Engineering, 2016 v.33 (3) [electronic resource]
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Articles
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Main | ART MJAE V33 No3 14 (Browse shelf(Opens below)) | Available |
Includes bibliographic reference
The main aim of this work is to study the effect of lank diameter depth ratio on the water quality and productivity of recirculating aquacultural system to reach the optimum tank diameter: water depth ratio. The obtained results indicated that the mean weight of fish increased from 18 to 148.18 to136 and 18 to 114 g after 14 weeks with the diameter depth ratios 4. 6.4 and 8. respectively. The average weight gain of fish increased from 2 to 21. 8 to 13 and 3 to 6 g after 14 weeks with the diameter depth ratios 4. 6.4 and 3. respectively. The specific growth rate ranged from 0.99 to 6.00, 0.39 to 5.25 and 0.17 to 5.10 % day-1 at 4. 6.4 and 8 diameter depth ratio. The feed conversion rate ranged from 0.68 to
3.53. 0.88 to 10.91 and 0.93 to 18.51 kg feed/kg fish at 4. 6.4 and 8 diameter depth ratio. The feed efficiency ranged from 0.28 to1.46. 0.11 to 1.13 and 0.05 to 1.39 at 4. 6.4 and 8 diameter depth ratio. The mean daily mortality rates were 0.048. 0.058 and 0.064 % at 4. 6.4 and 8 diameter depth ratio. respectively.
Summary in Arabic
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