Hygiene of fish culture facilities..pptx
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- 1. Hygiene of fish culture facilities Fish physiology and breeding(B) Presented by: Faisal Sadiq Presented to: Dr. Asma Karim
- 2. content • Definition • Sanitation Practices for Fish Pond • Sanitation Practices for Indoor Tank Facilities • Sanitation Practices for Recirculation System
- 3. Hygiene/ sanitation • Sanitation practices include cleanliness while fish are growing, and disinfection of; – Equipments – Personnel – Water
- 4. Sanitation Practices for Fish Pond continuous production – Involves replacing the fish harvested, with equal number of fingerlings. Rarely drained (every 5-10 years) When drained, allow the bottom soils, to air dry for several months. organic matter (feces & uneaten feed) The soil should then be tilled (15 cm) to accelerate aerobic decomposition of organic material.
- 5. all-in-all-out – drained at the end of each production cycle. managed as described above very small ponds washed (high-pressure hose) can then be “treated” with hydrated lime as a sterilant (1000-2000 kg/ha ). Hydrated lime cause the pH in to rise above ten, whichis lethal to – parasites and bacteria – Eliminate ammonia tied up in muds
- 6. Equipment (boots, waders, seines, boats, etc.) – should be thoroughly dried in direct sunlight – Chemically disinfected Personnel – Footbaths and areas for employees to wash hands with a disinfecting soap should be placed at the entrances to buildings
- 7. Sanitation Practices for Indoor Tank Facilities Indoor tanks Aquarium
- 8. • Fish in tanks or aquaria subject to disease as intensity increases • high feeding and stocking, creates environment where bacteria, fungi and parasites can flourish 1. adequate water exchange 2. Remove particulate matter (feces, uneaten food, etc.) 3. Dead fish should be removed promptly
- 9. • Cleaning – removal of debris by siphoning, – manual removal of algae from tank walls – removal of excess particulate matter from the biofilter or sponge filter. • Chemicals used should be minimally toxic to fish – Potassium permanganate (10 mg/l), – Roccal-D1,a quaternary ammonium compound – Nolvasan-S2
- 10. Sanitation Practices for Recirculation System
- 11. Ultraviolet (UV) light • Ultraviolet (UV) light can minimize the spread of infection. • Effectiveness depends on the size of particles and the length of exposure time • more effective against viruses and bacteria than protozoa.
- 13. Ozonation • Ozone acts as a free radical and oxidizes organic material. • maintenance of water clarity in large display aquaria • Cautions – Ozone gas is colorless and odorless which can be a serious health hazard to humans in the vicinity – When comes in contact with live fish, also toxic. It damages skin and gills – Before the installation of an ozone generator, professional advice should be sought
- 14. Thank you