Growth parameters of whiteleg shrimp Litopenaeus vannamei and red seaweed Gracilaria corticata in integrated culturing method under zero water exchange system
| Autor: | Mohammad Seddiq Mortazavi, Hojjatollah Fourooghifard, Kiuomars Roohani Ghadikolaee, M Mirbakhsh, Abbas Matinfar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
biology 010604 marine biology & hydrobiology Litopenaeus 04 agricultural and veterinary sciences Factorial experiment Aquatic Science Corticata biology.organism_classification 01 natural sciences Feed conversion ratio Shrimp Fishery Animal science Algae Whiteleg shrimp 040102 fisheries 0401 agriculture forestry and fisheries Seawater |
| Zdroj: | Aquaculture Research. 48:5235-5242 |
| ISSN: | 1355-557X |
| Popis: | Growth parameters of whiteleg shrimp Litopenaeus vannamei and red seaweed Gracilaria corticata were measured using integrated culturing method under zero-water exchange system in a 45-day period. A 2 × 3 factorial design was used with two levels of shrimp stocking densities and three levels of seaweed weight densities. G. corticata was cultured on a net tied to a round polyethylene frame. Culture tanks were filled with 750-L filtered seawater. A 40-W compact fluorescent lamp was hung over each tank to provide adequate and sufficient light for seaweed growth. Growth parameters of shrimp and seaweed such as specific growth rate (SGR), weight gained (WG) and average daily growth (ADG) were computed based on the initial and final weight of shrimp and seaweed. The maximum and minimum SGR of L. vannamei (1.97 and 1.69%/day) were observed in treatment S1A3 (25 shrimp/m2 and 400 g seaweed/m2) and S2A1 (50 shrimp/m2 without seaweed) respectively. The best survival rate (94.67 ± 1.33%), WG (129.9 ± 2.9%) and feed conversion ratio (1.67 ± 0.04) were also observed in treatment S1A3. The SGR of G.corticata in the treatment S1A3 (1.97 ± 0.00%/day) was significantly higher, compared to others. Strong positive correlations were obtained between the density of G. corticata and the growth parameters of L. vannamei. The red seaweed G. corticata could boost the growth parameters, survival rate and total production of L. vannamei under zero-water exchange system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|