In-pond Race way systems for Aquaculture (IPRS).pptx

In-Pond Raceway Systems (IPRS) represent a cutting-edge method in pond aquaculture, effectively combining the advantages of confining fish in a restricted area within the pond with the efficiency of a flowing water system. This innovative approach facilitates water circulation within the pond, mimicking the natural flow found in riverine environments. By creating this dynamic water movement, IPRS significantly enhances the pond's productivity potential. The core principle of IPRS involves the installation of specific components that work in concert to circulate and refresh the water within the pond, all while preventing any discharge into the surrounding environment. This setup effectively utilizes a dividing partition, or baffle, to create a circular water flow pattern. As a result, the water undergoes continuous mixing and movement, optimizing conditions for fish growth and minimizing stagnation.

1. Aquaculture Production Systems In-Pond Raceway Systems (IPRS) Sokoine university of agriculture Presented by Magoti Ernest Ndaro Dept. Of Animal, Aquaculture and Range Science

2. Introduction to In-Pond Raceway Systems ( IPRS) IPRS integrates fish in a portion of the pond with flowing water system . circulate and mix pond water to optimize fish growth while preventing environmental discharge .

3. In-Pond Raceway System – The Theory and History IPRS started in the late 1980s in the US at Auburn, Clemson & Mississippi State University, led by Drs. David Brune , Mike Masser & Andy Lazur With support from the ACES and USSEC research refined IPRS leading to the creation of WWUs. Since its introduction, IPRS has spread to over 18 countries including Tanzania (TANLAPIA) Read more about history: https://ussec.org/wp-content/uploads/2022/01/20220121_USSEC_IPRS_Manual_UPDATED.pdf

4. Adequate and reliable water supply Sufficient land area Topography and Climate considerations Site selection for in pond race way Access to essential utilities such as electricity regulatory requirements and permits Proximity to markets and distribution channels

5. Components of in pond race way Whitewater Units (WWU) create a vertical and horizontal water flow Raceway Cells 5m x 2.3m x 30m, have mesh ends. Cells divided into CZ, PZ, and QZ segments. Supplementary Aeration (SA) Supplementary aeration enhances fish health and waste treatment.

6. Cont.. Working Walkways (WW) 1.8-2m supports feeding& maintenance. made of steel, fiberglass, concrete/wood. Confinement Gates (CG)&Gate slots located at both ends of the PZ, serve to retain fish and optimize water exchange. The Baffle Wall (BW) It guides water from the IPRS cells & WWUs. Allow mixing and aeration. made of earthen material/UV-protected HDPE

7. Cont.. Electrical and Back-up Power Systems Spare Equipment and Backup Systems Waste Management and Extraction Submerged vacuum head drawn across QZ floor by cable & Vacuum system on rail structure travels along QZ length. Filter-feeding or Service Species

8. Culture Techniques, Operation and Maintenance of IPRS Stocking density It base on biomass , harvest size , volume ; ranges 100-150 kg/m3. involves healthy, uniform "stockers,“(20-25g) Management of Filter feeding and Service Species The "80:20" principle developed USSEC Feeds and Feeding Hand-feed fish to satisfaction. Feed Storage first-in, first-out

9. Cont.. Water and Water Quality Management No water exchange, as the aerated system ensures stability, with minimal fluctuations in D.O, pH, and NH 3 Confinement Gates management Clean and debris-free gates with properly sized mesh ensure robust water movement while retaining fish Floating Waste Solids fish species e.g. tilapia, floating fecal matter pose challenges Adjusting feed formulations can mitigate this issue Fish Health Management in Raceways stocking healthy fingerlings, quality feed, water quality and liming

10. Cont.. Harvesting from In-Pond Raceways IPRS facilitates stress-free , cost-effective fish harvests. No need for seining equipment; fish are harvested at target size, minimizing stress.

11. Record Keeping and IPRS Performance Monitoring Detailed records should be maintained to track various parameters such as water quality , fish health , feeding regimes , and maintenance activities Maintenance of In-Pond Raceway Systems Timely maintenance, including filter cleaning and diffuser inspection, prevent issues like clogging or malfunctioning. Backup generators must be checked and tested weekly The baffle should be inspected on a monthly schedule for rips, holes or deterioration.

12. Economics of IPRS Investment and Construction Costs Land acquisition/rental, pond construction, water & electrical systems installation machinery & equipment such as feed storage bins, buildings, feeding equipment, water chemistry kits, WWUs, harvesting gear & vehicles. Variable Costs expenditures for fingerlings, feed, labor, electricity, chemicals, and other items necessary for fish production. Feed costs 40%-75% fingerlings 9% -49%, electricity 4%-6%)& management/labor 3%-13%

13. Cont.. Fixed Costs Fixed costs are those that an operation incurs whether fish are produced or not land, pond construction, equipment, machinery, repairs, maintenance, taxes and insurance. Revenue come from selling the fish quantity raised and harvested at one or more price points Tanzania farm gate price 7000/=/kg of tilapia fish Marketing wholesalers, middlemen, retailers, and individuals Advertisement

14. How IPRS differ from other aquaculture farming methods

15. Advantage of IPRS Enhanced Environmental Sustainability Increased Production Yield More informationLook at: https://youtu.be/WyUDCsQkWdg?si=ObZ81x_f15NVvOQb