Presentation on theme: "INTERNATIONAL CONFERENCE ON SHRIMP AQUACULTURE"— Presentation transcript:
1INTERNATIONAL CONFERENCE ON SHRIMP AQUACULTURE RECENT PROGRESS OF BIOFLOC TECHNOLOGY FOR SUSTAINABLE SHRIMP (Pacific white shrimp) FARMING: EFFICIENCY AND PROFITABILITYNyan TawHang Tuah University,Surabaya – INDONESIAOctober 28-29, 2010
2IntroductionShrimp farming has become competitive and as such the technology utilized needs to be efficient in all aspects – productivity, quality, sustainability, bio-security and to be in line with market demand.BFT (Biofloc) system is at present highly sought technology for Pacific white shrimp culture due to high efficiency, productivity, sustainability and with lower FCR. The basic system of bio-floc technology was given by Avnimelech (2000, 2005a&b). The system was successfully applied in commercial culture of shrimps by McIntosh (2000a,b & c, 2001), McNeil (2000), Nyan Taw (2005, 2006, 2009), Nyan Taw & Saenphon Ch. (2005); Saenphon Ch. et.al. (2005). BFT in combination with partial harvest was presented at WA 2009 in Veracruz, Mexico and on Potential of BTF at Asia Pacific Aquaculture 2009 in KL by Nyan Taw (2009). Recently, Avnimelech (2009) published a book entitled “Biofloc Technology: A Practical Guide Book” . Very recently Nyan Taw (2010) published an article in GAA on expansion of biofloc technology in white shrimp farms. Studies on raceway nursery and super intensive zero water exchange systems were carried out by Somacha (2002 & 2009).
3Data on feed protein utilization Basic Concept of Biofloc TechnologyYoram Avnimelech, 2000, 2005Data on feed protein utilizationASP Tilapia ponds (Avnimelech) %ASP ShConventional fish, shrimp ponds %Srimp ponds (McIntosh) %Closed shrimp tanks (Velasco) %ASP shrimp ponds, 15N studyMichele Burford et al % of total N consumption
4The ‘Biofloc (Floc) The biofloc FLOC COMMUNITIES AND SIZE100 µThe bioflocDefined as macroaggregates – diatoms, macroalgae, fecal pellets, exoskeleton, remains of dead organisms, bacteria, protest and invertebrates.(Decamp, O., et al 2002)As Natural Feed (filter feeders – L. vannamie & Tilapia) : It is possible that microbial protein has a higher availability than feed protein (Yoram, 2005)BrownGreen
5Basic of BFT in Shrimp Farming 1. High stocking density - over 130 – 150 PL10/m22. High aeration – 28 to 32 HP/ha PWAs3. Paddle wheel position in ponds4. HDPE / Concrete lined ponds5. Grain (pellet)6 Molasses7. Expected production 20–25 MT/ha/cropFeed & grain application and bioflocHigh aerationHigh densityDark VannameiRed VannameiGrain pelletBioflocs
6Pond Water Preparation For already treated water in series of treatment reservoirs inHDPE lined 0.5 ha production pondsDayActivity1Urea 8 kg & TSP 1 kgGrain pellet 30 kg & Dolomite 50 kg2Tea seed cake 15 ppm468Grain pellet 50 kg, Molasses 8 kg & Kaolin 50 kg10Grain pellet 50 kg12Kaolin 50 kg
7Pond Operation High Aeration SiphoningPaddle Wheels position
8FLOC Development stages (vol) in pond Stage 1 : Floc found but cannot be measured (subjective)Stage 2 : Floc found in small quantity, < 1.0 ml/litreStage 3 : Floc found abundance, 1.0 – 5.0 ml/litreStage 4 : Floc found abundance, 5.1 – 10.0 ml/litreStage 5 : Floc found abundance, > 10.1 ml/litre
91 liter / 2 places/ 15 cm deep/ between 10-12 am Sampling Method Measuring procedure1 liter / 2 places/ 15 cm deep/ between amLet it settled for minutesRead density of flocs in cone (ml/l)
10Feed, Grain Pellet & Growth Nyan Taw WAS Las Vegas 2006
24Bio-floc in Raceways/Wet Lab Experiments, Trials & Growout 1. Nursery–nursed for 1 to 2 weeks then to GO2. Super-intensive /intensive culture (to market size)3. Broodstock production – culture to broodstock size (45 –50 gm).4. Broodstock testing– trials for quality of broodstock family lines (two to four months ).5. First phase of the three phase culture system.
25Raceway Technology Biofloc Trials - Nursery & GO DescriptionStocking Density (pcs/m2)550130Pond2Initial MBW (g)4.91.7Period (days)5790Harvest Biomass (kg)374151Final MBW (g)13.818.4FCR1.21.0Survival rate (%)6688ADG (g/day)0.160.19Productivity (kg/m2)5.22.1Productivity (kg/ha)51,89321,001Nyan Taw, et.al Role of R&D …World Aquaculture 2005 Bali
26Raceway trials in BFT Global Group Raceways at Anyer, Indonesia The raceway system with biofloc is being applied for trials for L. vannamei broodstock family selection.
27Wet Laboratory – Trial Tanks Global Group facility at Anyer, IndonesiaShrimp feed trials using transferred BioflocSmall scale experiments at requestFreshwater tolerance experimentsNursery stage experiments
28Potential of BFT – PERU Lined and covered Piura - Intensive with freshwater coveredPiura -Inside covered pondGrainTumbes-Extensive with SWPiura Intensive FW Nursery
29Potential for BFT – GUATEMALA Lined with high energy input Pasca Shrimp Farm 1
30Potential for BFT – CHINA Lined, covered & high energy input Covered pondsInside covered & lined pondsCovered pondsInside covered & lined ponds
31Development of BFT (Productivity) NT- Advised by long visitsNT – Managed at siteNT – Advised by short visitsYA -Advised byRM- Managed at siteAccording to Shrimp News International (2006) No one knows how many shrimp farms are employing the bio-floc technology. The best examples of the of farms that have implemented the new technology are: 1. Belize Aquaculture, Ltd., in Belize. 2. OceanBoy Farms in Florida, USA, and 3. PT Central Pertiwi Bahari in Indonesia.
32Advantages/ Disadvantages 1. Bio-security very good (from water) – to date WSSV negative using the system.2. Zero water exchange – less than 100% exchange for whole culture period.3. Production (Carrying capacity): 5-10% better than normal system4. Shrimp size bigger by about 2.0 g than normal system5. FCR low – between 1.0 to 1.3 (without GP)6. Production cost lower by around %.Disadvantages1. High energy input – paddlewheels 28HP/ha.2. Power failure critical – maximum one hour at any time (better zero hour failure)3. Full HDPE lined ponds – minimum semi-HDPE lined4. Technology similar but more advance – need to train technicians
34AcknowledgementsThe author would like to give sincere thank to Dr. Shahridan Faiez (CEO) and Mr. Christopher Lim (COO), Blue Archipelago for their interest and continued support .The staff and members of Blue Archipelago, Malaysia for their diligence and hard work to make this presentation possible.