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Semi intensive fish culture system
This document discusses semi-intensive fish culture systems. Semi-intensive systems involve small ponds of 0.5 to 1 hectare with stocking densities of 10,000 to 15,000 fish per hectare. These systems develop natural foods through fertilization and provide some supplemental feeding. Yields are moderate at 3 to 10 tons per hectare with high survival rates. Semi-intensive systems are preferred due to their low costs and moderate production while being cleaner than extensive systems. Natural phytoplankton and zooplankton are used as the primary food source, supplemented by feeds containing protein, carbohydrates, and materials that are cheap and available locally like plant waste and manures.
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Semi intensive fish culture system
- 1. Semi-intensive Fish culture System From: Tayyab Sultan Roll no: 34E Submitted to: Dr.Abdullah Shakir
- 2. Fish production byusing both natural food and supplementary feed
- 3. Semi intensive systemSemi intensive fish culture system is more prevalent and involves rather small ponds(0.5 to 1 hectare in an area) with higher stocking density (10000 to 15000 fish/ha). Basically in this system care is taken to develop naturals foods by fertilization with/without supplemental feeding. However the major food source is natural food Yield is moderate (3 to 10 ton/ha) and survival rate is high.
- 4. Why Semi intensiveculture system is preferred .Low cost more production Comparatively cleaner system as compared with extensive culture system More fishes can be reared in natural ponds
- 6. Natural Phytoplankton and Zooplanktonused as food by fish
- 7. Selection of supplementary Feed Usethe feed stuff that are of Good nutritional values with high protein and carbohydrates and low fiber Well accepted by the fish we want to feed Cheap in price Available easily most of fish growing season
- 8. Materials that canbe used as feed supplement Small animals:Earthworms , Snails and Termites Plant materials:Grasses legumes leaves seeds fruits and vegetables Kitchen :wastes Brewery; Wastes and yeasts Manures; chicken dropping pig manure etc Rice; Broken polishing bran
- 9. How fine feedstuff should be Adopt the size of feed stuff particles to the mouth size of the fish to reduce feed loss and maximize feed utilization
- 10. Stocking density offish in semi intensive culture The stocking density of fish ponds describes the number of fish that are stocked initially per unit area. It is one of the most important factors in determining the production of fish farm. At low levels ,increased the stocking density will increase yeild.
- 11. Influence of stockingdensity on cutivation
- 12.