RAS_vs_Pond_Comparison_Presentation.pptx

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1. Comparative Advantages and Challenges of RAS vs. Traditional Pond Systems Student Name: [Your Name] Student ID: [Your ID] Course: SFM311.1 Advances in Aquaculture Date: April 28, 2025

2. Introduction • Aquaculture is key to food security and sustainability • RAS and pond systems are two major methods • Understanding their differences helps in informed decision-making

3. What is Recirculating Aquaculture System (RAS)? • Closed-loop system that reuses water • High control over environment • Suitable for intensive farming • High cost and complexity

4. What is a Traditional Pond-Based System? • Uses natural or man-made ponds • Relies on natural cycles • Low cost and simple • More exposure to environmental risks

5. Efficiency & Environmental Sustainability RAS: • High density production • Reuses water (up to 99%) • Low pollution risk Ponds: • Lower density • High water use • Risk of runoff and eutrophication

6. Economic & Technical Comparison RAS: • High setup and running cost • Needs skilled labor and automation Ponds: • Low cost • Operated with traditional knowledge

7. Species Suitability & Biosecurity RAS: • Salmon, trout, shrimp • High biosecurity Ponds: • Tilapia, carp, catfish • Open to pathogens and predators

8. Case Study 1: RAS in Norway • Land-based salmon farming • Advanced filtration and monitoring • High yield with low environmental impact

9. Case Study 2: Ponds in Bangladesh • Tilapia and carp farming • Low input, community-based • Challenges with nutrient runoff

10. Conclusion • RAS is efficient but costly • Ponds are accessible but less controlled • Each system has a specific niche

11. Recommendations • Promote hybrid systems (e.g., in-pond raceways) • Train farmers in RAS operations • Improve sustainability in pond aquaculture

12. References • Ahmed et al. (2019) • Badiola et al. (2012) • Boyd & Tucker (2012) • FAO (2020) • Martins et al. (2010) • Timmons & Ebeling (2013)