Presentation on theme: "Production of Freshwater Shrimp in Ohio Laura G. Tiu, Aquaculture Specialist OSU South Centers Bob Calala Calala’s Water Haven Inc."— Presentation transcript:
Production of Freshwater Shrimp in Ohio Laura G. Tiu, Aquaculture Specialist OSU South Centers Bob Calala Calala’s Water Haven Inc.
What are they? Malaysian Prawns –When is a prawn a shrimp? Life Cycle –Hatchery (Feb-Mar) – Nursery (Apr-May) – Growout (June-Sept) Nursed juveniles (60 days old)
History 1960’s Research in Hawaii 1970’s Research in Florida 1980’s Research at Mississippi State University 1990’s Research at Kentucky State University 2001 Approved for culture in Ohio 2002 First research in Ohio 2003 Latitude Study 2004 Feed Study 2005 High density 2006 One acre pond 2007 ?
Where is this happening? Mississippi –Commodity work Arkansas, Georgia Tennessee, Kentucky Illinois, Indiana Ohio Nebraska –tanks Iowa –heated effluent
What do you need to know Business planning Permit (ODNR) –Publication 61(Q&A) –$50.00/year Pond Construction Production Marketing
What to expect (Short Version) Build pond/get permit/arrange seed/feed Lime/fertilize Stock Shrimp (1 st week of June) Feed daily/test water weekly Aerate As Needed Worry daily, because you can’t see them Develop marketing plan Harvest in September
Pre-Season (January-February) Determine Stocking Density 16,000 – 24,000/acre 20,000-30,000/acre w/substrate Order Shrimp –You pick up or delivered –Are they graded? –Nurseries Ohio (Calala’s Water Haven) Kentucky, Mississippi, Texas Order/Arrange Feed Plan Aeration Get Permit –Ohio Department of Natural Resources –$50.00/year
Liming (April-May) Prawns are very sensitive to low and high pH Test water and soil –You want water alkalinity > 40 mg/L –You want soil pH > 6.5 at sunrise Use Agricultural Limestone –Add to soil before filling pond –1,000 – 10,000 lbs/surface acre Determined by soil quality $77.00
Fertilization (2 weeks before stock) Organic fertilization: plant or animal products Animal manure 200 pounds/acre in order to kick start things pounds of horse (or other) manure per week for the first two weeks. Alfalfa meal. (Soybean meal, Distillers Grains) 200 pounds/acre/week Apply in the shallow areas to insure good mixing. Inorganic fertilization: liquid fertilizer (ammonium nitrate) available at most farm supply stores spray it evenly on the pond with a backpack sprayer gallons per acre/per week. phosphoric acid 10 oz./acre/week. Take extra precautions as these chemicals can cause burns on eyes and skin.
Stocking Shrimp (June 1-15) Fill pond Monitor pH –No more that 0.5 pH units difference Acclimate shrimp to temperature, pH Count shrimp –shrimp numbers often underestimated –Count three samples and extrapolate –Graded shrimp will be uniform –Ungraded shrimp will not be uniform
Pond Maintenance (June-Sept) Aerate As Needed Control predators (screen water) –Insects –Bullfrogs –Turtles –Birds Monitor water quality Feed Keep records Develop a marketing plan
Feeding (June-Sept) Feed once or twice a day –If once, before sunset Distribute feed all over pond –Especially edges Store feed in cool dry place Do not feed moldy feed Hold back feed if it’s building up in pond
Feeding (June-Sept) 16,000 shrimp/acre June = 25 lbs/day July 1-15 = 30 lbs/day July = 40 lbs/day Aug 1-15 = 50 lbs/day Aug = 60 lbs/day Sept 1-15 = 60 lbs/day Sept = 50 lbs/day Total = 5000 lbs feed/acre 25,000 shrimp/acre (with substrate) June = 25 lbs/day July 1-15 = 40 lbs/day July = 50 lbs/day Aug 1-15 = 65 lbs/day Aug = 75 lbs/day Sept 1-15 = 75 lbs/day Sept = 65 lbs/day Total = 6300 lbs feed/acre
Sampling (June-Sept) Can sample with a cast net Can see red eyes at night with flashlight Sometimes you will find molts
Harvesting Time how long it takes pond to drain –Write this down! Shrimp will follow water Have baskets and clean aerated water Have ice Have scale Keep notes (pounds, times, etc.) Get help