Eco-hatchery for
Carp Seed Production and Extension Services
1. Objective :
• To breed commonly cultivated six species of
fish viz., Catla (Catla catla) Rohu (Labeo rohita), Mrigal (Cirrhinus
mrigala) Silver carp (Hypothalmichthys molitrix), Grass carp (Ctenopharyngodon
idella) and Common carp (Cyprinus carpio).
• To facilitate quality production of fish seed
of culturable varieties.
• To produce fish seed in those areas where
natural collection of fish seed is not possible and arrange for
distribution/marketing.
2. Location & Area of Operation :
The project may be located in high land areas which
are near to areas having concentration of fish farmers.
3. Project Components :
Breeding pool, hatching pool, overhead tank,
STW, pumpset, generator, guardshed.
4. Project Cost :
Installed Capacity :
Spawning pool - 1 no. 8m diameter 150-200 kg of brood
fish.
Hatching pool - 3 nos. 3m diameter 450 trs of
fertilised eggs.
A. Capital Cost :
Item Cost (Rs.)
1. Renovation of tank of 2 ha water spread area /
circular breeding pool 105,000
and hatching pools
2. Overhead tank of 5000 gallons capacity 50,000
3. Shallow tube well/pumpset/generator/guard shed
120,000
4. Brood stock-5 tonnes 150,000
5. Contingent expenses for nets, equipments hapas
etc. 30,000
Total 455,000
B. Recurring Cost
I. Cultural cost for 3 preparatory months
i. Feeding of brood stock 40,500
ii. Salary of 2 guards-cum-labour @
Rs. 450/pm/Cost
of netting 3,300
Total 43,800
II. Cultural cost for five operating months
i. Feeding of brood fish 33,750
ii. Wages of 2 guards/labour and operation of
electricity charges 44,250
iii. Misc. cost for pituitary glands, equipments,
electricity etc. 19,250
Total 97,250
III. Cultural cost for 4
post-operatory months
i. Manuring, limiting and
fertilising, wages for
guards and netting, etc., 7,900
Total A + B = 603,850
5. Margin (10%) :
Rs. 0.60 lakh
6. Bank Loan :
Rs. 5.43 lakhs
7. Rate of Interest : 15% p.a.
8. Repayment period : 5 years which includes a
grace period of one year.
9. Income Parameters :
Sale of major & exotic carp spawn for five
operative months @ 5 runs per Rs. 4,16,000 month (1 run=sale of 51.2
lakhs of major carp @ Rs. 200/lakh + sale of 12.8 lakhs of exotic carp
spawn @ Rs. 500/lakh) i.e., (10,240 + 6400)*5*5
10. Economics of the Projects :
• Net Present Worth - Rs. 2.32 lakhs
• Benefit Cost Ratio - 1.24 : 1
• Internal Rate of Return - 40%
11. Other Information :
Process :
By resorting to induced breeding by administering
piruitary gland extract injection.
Steps :
i. Collection and storage of pituitary glands :
Pituitary glands are collected from ripe fish and
preserved in absolute alcohol/acetone or by quick freezing.
ii. Selection of breeders :
Breeders are identified and selected based on their
external characteristics such as weight, quality, etc.,.
iii. Maintenance of breeders :
Breeders are maintained and stocked sex wise in
separate ponds one to two months prior to breeding.
iv. Dosage and administration of injection :
Breeders are injected with different doses of
pituitary gland extract depending on body weight.
v. Spawning :
In cement ponds diagonally fitted with water inlet
pipes females and males are released for spawning and fertilising the
eggs.
vi. Incubation :
The fertilised eggs are led to incubation pools for
hatching and the hatchlings remain in the incubation pond for three
days.
vii. Rearing of Seeds :
Seeds are reared in earthen ponds and feed of
finely powdered groundnut/mustard cake is administered.
viii. Harvesting :
Fries grow reasonably big (25-30 mm) in two weeks
and are harvested with drag net.
ix. Feed Requirement :
Mixture of finely powdered groundnut/mustard oil
cake/rice bran in equal proportion by weight as under :
• 1 - 5 days - feeding four times the total
weight of the spawns
• 6 - 12 days - feeding eight times the total
weight of the spawns
• 13 - 14 days - no feeding
x. Few tips :
• The location of a Hatchery should ideally be on
a sloping high land for economical construction. If sloping land is
available the floor level of the spawn collection tank should be
adjusted to the ground level for draining out water by gravity.
• The level of eggs transfer outlet located at
the centre of spawning tank should be about 10 cm. above the level of
central overflow pipe at the top of the hatching tank. This will
enable complete transfer of eggs from the spawning tank to use outside
the tanks.
• Overflowing water from the hatching tank should
not be passed on to the spawn collection tanks but should be put to
use outside the tanks.
• Separate fresh-water supply lines should be
installed from the overheads water to
k to each tank i.e. spawning tank, hatching tanks and spawn collection
tanks in order to ensure independent working of each.
• Water spraying arrangements should be provided
for aeration and oxygenation in the three tanks.
• Eggs transfer pipe should discharge the water
along with eggs into the hatching tank in between the two walls of the
hatching tank to avoid damage of eggs.
• The walls of the spawning tanks should be
provided with water inlet pipes installed in a diagonal position to
create a circular water flow during the spawning period.
• Where water flow is insufficient for
circulation, multiple-chambered hatching pools with paddle wheels for
circulation may be constructed.
Note :
• Margin of 10% is assumed, but the actual margin
will be as per the discretion of the banks.
• Interest rate of 15% is assumed for both
investment and working capital. However, the actual rate will be as
per banks' discretion.
• Similarly, the other economic / financial
parameters such as the repayment period, DSCR, IRR, etc., may also
vary depending upon the margin, interest rate etc., taken into account
by the bank.
Small
Farmers' Agri-Business Consortium