3. Semi intensive system Semi 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 intensive culture system
.Low cost more production
Comparatively cleaner system as compared with
extensive culture system
More fishes can be reared in natural ponds
7. Selection of supplementary
Use the 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
8. Materials that can be used as
Small animals:Earthworms , Snails and
Plant materials:Grasses legumes leaves
seeds fruits and vegetables
Brewery; Wastes and yeasts
Manures; chicken dropping pig manure
Rice; Broken polishing bran
9. How fine feed stuff should be
Adopt the size of feed stuff particles to the mouth size
of the fish to reduce feed loss and maximize feed
10. Stocking density of fish in semi
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