National Breeding Center for Freshwater Aquaculture was established on 22 December 1976 as the Sub-Institute for Marine Fisheries No. 1 which mainly focused on marine fisheries research. It belongs to the Ministry of Agriculture and Rural Development (MARD) since 2007. RIA2 is a key organization for the research and development of aquaculture technologies and related fields of fisheries in southern Vietnam.
I am very grateful to the College of Aquaculture and Fisheries, Can Tho University for providing me this opportunity to participate in this internship program in the National breeding Center for Freshwater Aquaculture.
3. • Established on 22
December 1976 as the
Sub-Institute for
Marine Fisheries No. 1
• Mainly focused on
marine fisheries
research
• Belongs to the Ministry
of Agriculture and Rural
Development (MARD)
since 2007
RESEARCH INSTITUTE FOR
AQUACULTURE NO. 2
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4. NATIONAL
BREEDING CENTER
FOR SOUTHERN
FRESHWATER
AQUACULTURE
• key organization for research
and development of
aquaculture technologies and
related fields of fisheries in
southern Vietnam.
• about 23 staffs working in the
center
• built up cooperation with many
international institutions and
organizations such as ACIAR,
World Fish Center, NACA,
SEAFDEC, AIT, HAKI, DFID, AIMS
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5. Main facilities
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• Total area 20 ha
• Water surface 12 ha
• Reservoir
• Sedimentary ponds
• Water supply
• Hatcheries
• Nurseries
7. Main tasks
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• Selective breeding
• Conservation of endanger species
• Development, application and dissemination of new aquaculture
technologies
• Supply quality seeds
• Training and extension activities
• International collaboration
9. NURSING OF THE CHANNEL CATFISH
Preparation of nursery tanks
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• Clean the tank before supplying water
• Scrub the walls and bottom thoroughly
• Use 100ppm chlorine solution
• Rest it for 7-10 days for disinfection
• Dry for 1-2 days to achieve bactericidal effect and evaporate
all chlorine
• Cover the surface of tank to avoid dragonfly larvae with net
10. PREPARATION
OF THE TANKS
FRY STOCKING AND
CARE
MANAGEMENT OF
THE TANKS
SAMPLING
PREPARATION
OF THE TANKS
FRY STOCKING AND
CARE
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11. Preparing the nursery tank
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• pH, NH3, NO: guaranteed to be within
good growth limits for the fish
• Installed with bottom aeration system
• To ensure suitable oxygen content for fish
• To ensure uniform distribution of feed
throughout the tank
12. Preparation of supply water
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• Water is supplied into the setting tank
through a filter net
• Chlorine treatment: 30ppm
• Rest it for 3 days to reach a safe chlorine
concentration
• Supply it to the nursing tanks
12
• Settling tank: prepared continuously
• For changing the water during the whole process
14. Stocking density of fry
Density
(fish/m3)
No.of fish/tank(15m2) No. of tanks Total amount of fry
100 1500 6 9000
150 2250 6 13500
200 3000 6 18000
Total 40500
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15. Care management
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• The fry are produced from a reputable facility
• Age of fry from 20-24hours
• 800 dehydrated fry in 1ml
16. Management
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• Siphoning of the tank: every
two days
• Purpose: to remove the
uneaten feed and organic
matter accumulated at the
bottom of the tank
• By using a farm made equipment
• One hour after feeding when the siphoning is needed
17. Sampling
Why sampling is necessary???
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• To check the external parasites and
• Fish sample: taken to the pathology lab
:observed under the microscope
• To monitor growth performance (weight and length)
• Each sampling: 30 fish selected randomly from the ponds
18. Water quality
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• Every two days
• Recorded in the notebook
• Ensured water quality while
stocking the fry
• Temperature: 26-30
• pH: 7-9
• DO: 4-6 mg/l
• NH3:0
• NO2:0
19. Feeding
Moina:
Artemia:
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• Prepared on advance: to ensure the right time and quality
for fry to be fed on same diet and day
• 1g of the cyst: around 200,000 artemia (hatching rate 85%)
• Feed intake: 9RFL (reference feeding level)
• Collected, washed thoroughly with clean water and soaked in
Virkon (1ppm/10minutes)
• Stocking into nursery tanks
20. Commercial feed
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• Tomboy concentrated powder:
• Size: micro 0
• CP: 40%
• Expected feed by day: adjusted according
to fish needs
• Feeding: 2 times/day
:8 am and 2 pm
: Manual feeding
