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TECHINAL IMPROVEMENT OF MARINE
FIN FISH HATCHERY PRODUCTION
USING INVE AQUACULTURE PRODUCTSIN VIETNAM
Nguyen Huu Dung
Regional Technical and Sale Support Manager
E-mail: [email protected]
Mobil. +84 94 724 8778
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A STUDY ON STATUS OF MARINE FIN
FISH HATCHERY PRODUCTION IN
VIETNAMPurpose: Understand status of techniques, ways of using
INVE products in fin fish hatcheries in order to suggest
technical recommendations on appropriate application of
INVE product to improve the hatchery productivity.
Time: 15 September – 31 December, 2015
Targets:
– 14 hatcheries in Khánh Hòa province
– 11 hatcheries in Bà Rịa – Vũng Tàu province,
– Yet the new hatcheries established in 2015 or those of seasonal
operation, hatcheries invested by Chinese and Taiwanese, or those
applying mesocosmic nursing systems.
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POPULARLY APPLIED PROTOCOL
Algae
Rotifer
Artemia
Formulated feeds
DPH
0 402 251410 18 60 80
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INVE PRODUCTS HAVE BEEN USED IN
VIETNAMESE FISH HATCHERIES
Algae
Rotifer
Artemia
Formulated feeds
DPH
0 402 251410 18 60 80
Rotifer feed: S-parkle
Enrichment: DHA Protein Selco
Cyst: Hi5, GSL, SepArt
Enrich diet: A1 DHA Selco
NRD ½; 2/3; 3/5; 5/8
NRD G8; G12; P16
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PRODUCTION OF SURVEYED
HATCHERIS
Fish speciesSize in
TL (cm)
Production
(1000 pcs)
Survival rate
(%)
Comp. to
2014 (%)
Asian sea bass 2-3 61.800 25 – 40 - 20
Pompanos 3-4 1.610 25 – 30 + 10
Cobia 10-12 520 1,5 – 2,0 + 70
Groupers 6-8 140 0,1 - 2,0 + 60
Others - 300 - + 20
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IMPORTANT ISSUE OF VIETNAMESE
MARINE FIN FISH HATCHERY PRODUCTION
Very high deformityrate
– Sea bass: 10 – 80%,
– Cobia: 10 – 15% – Groupers: 8 – 10%
– Pompanos: 10 – 35%
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GWS – GREEN WATER SUBTITUTION
Solution for Green Water in Hatchery
Rotifer feeding stage
Benefits – Reduce strees due to light
– Maintain rotifer quality
– Improve feeding efficiency
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GWS: ADVANTAGES AND SUGGESTED
APPLICATION IN VIETNAM
Microalgae culture
– Unstable at production sites
– Risk of contamination
Sanolife GWS application – Once/day in early morning
– 4 g/m3/day
– Well mixed with clean water,
keep overnight at 4-6oC
– Re-mix again before adding
to fish tank
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ROTIFER CULTURE – VIETNAM
EXPERIENCES
Correctly quantify before/in order to feeding your
rotifer NOT ESTIMATEDLY QUANTIFICATION
Use appropriate ciliate trap & debris collectors
Improve tools for rotifer collection
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HARVEST ROTIFER USING FLOWTHROUGH COLLECTOR
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APPLICATION OF S-PARKLE TO
FEED ROTIFER
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APPLICATION OF S-PARKLE
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APPLICATION OF S-PARKLE IN
VIETNAM
Rotifer density (rot./mL) Feeding rate (g/mill. Rot./day)
200 – 300 0.50
300 – 500 0.45
500 – 700 0.40
700 – 900 0.35
> 900 0.30
Notes: Lower feeding rate as compared to European
condition due to dissolved oxygen limitation.
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ROTIFER ENRICHMENT PROTOCOL
Rotifer density: 1000 rot. / mlTime: max 6 hours
Enrichment diet: DHA Protein
Selco
Mix with potable water, keep inrefrigerator for 6 hrs, re-mix again
before adding to enriching tank.
Final dose: 200 g/m3:
– At starting time: 100 g/m3 – Three hours later: add 100 g/m3
REPLACE AIRSTONE WITH
Tube with 1.5mm diameter
holes
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GENERAL PROBLEMS OF ARTEMIA INCUBATION
AND ENRICHMENT IN VIETNAM
Aeration with airstone or open tube Natural light or néon lamp, light intensity
1200 Lux
Not fully separate cyst shells from nauplii
Evaluate hatching efficiency by wet weight Nauplii are not cleaned at enriching time
Low density (150 NPL/ml) and low
concentration (150 g/m3)
Enriching time too short (6 hrs)Egg incubation and NPL enriching many
batches per day – coincide with feeding
frequency
HIGH COST – ENRICHED ARTEMIA QUALITY LOWER THAN FISH REQUIREMENT
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RECOMMENDED TYPE OF ARTEMIA
SepArt helps fullseparation of cyst shell
from nauplii at harvesting
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INVE AQUACULTURE - NGOC TRAI - SEMINAR - 2016
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ARTEMIA INCUBATION
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ARTEMIA INCUBATION
RECOMMENDATIONS
USE DRILLED TUBES
USE LED LAMP FOR HIGHER LIGHT INTENSITY ≥ 2500 LUX
INCUBATION TIME NOT MORE THAN 24 hours
CONTROL OF MICROBIAL DEVELOPMENT DURING INCUBATION
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CONTROL OF pH and MICROBIAL
DEVELOPMENT DURING INCUBATION
ACE
A1 DHA SELCO
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APPLICATION OF ACE IN
INCUBATION TANK
Without ACE With ACE
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ARTEMIA NAUPLII HARVESTING
• Create light source at the tank bottom
• Use Nauplii collector for more viable and clean naupliii
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SUGGESTED ARTEMIA NAUPLII
ENRICHMENT FOR VIETNAMESE
HATCHERY NPL density: 500 NPL / ml
Enrichment period: 20-22 hrs
Enrichment diet: A1 DHA Selco
Mix with potable water, keep inrefrigerator for 6 hrs, re-mix again
before adding to enriching tank.
Final concentration: 400 g/m3, and:
– Starting time: 200 g/m3
– 10 hrs later: add 200 g/m3
REPLACE AIR STONES WITH
1.5mm holes TUBE
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0%
20%
40%
60%
80%
100%
120%
0 6 12 18 24
E n r i c
h m e n t E f f i c i e n c y
HUFA n-3 ≥20:3
During the first 14 h of enrichment rate reach 6% per hour.
The subsequent hours, from 14h –
24 h, the enrichmentreaches a rate of 2% per hour.
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0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
- - - - - 6 12 18 24
0 6 12 18 24 - - - -
EASY DHA enrichment Cold Storage
H U F A
( m g / g d w )
Enrichment kinetics GSL2010 + Cold storage
ARA 20:4(n-6) EPA 20:5(n-3) DHA 22:6(n-3)
After 24 hours, with 600 ppm Easy DHA Selco + ACE reach approximately 55 mg HUFA (n-3 ≥20:3)/g
dry weight. A typical DHA/EPA ratio of 1,4 can easily
be obtained when using Easy DHA Selco®.
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COLD STORAGE OF ENRICHED ARTEMIA
NAUPLII TO SAVE YOUR LABOUR
IARC’s COOL STORAGE
Made in DenmarkLOCAL MADE COOL STORAGEMade in Nha Trang – VIETNAM
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Tank volume: 10 m3 Water Depth: 100 cm Stock ing density: 100-120 ferti lized eggs per l iter Hatch ing rate : ca. 95% Temp. : 28 - 30oC
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3
GWS (g/m3) 7:00 AM 1.0 2.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0 3.0 1.0 2.0 2.0 1.0 - - - - - - - - - - - -
7:00 AM - - 1.0 2.0 4.0 6.0 8.0 10.0 10.0 8.0 6.0 4.0 2.0 - - - - - - - - - - - - - - - - - -
15:00 PM - - 2.0 3.0 5.0 7.0 9.0 10.0 9.0 7.0 5.0 3.0 1.0 - - - - - - - - - - - - - - - - - -
7:00 AM - - - - - - - - 1.0 2.0 3.0 4.0 - - - - - - - - - - - - - - - - - - -
15:00 PM - - - - - - - - 2.0 3.0 4.0 3.0 - - - - - - - - - - - - - - - - - - -
7:00 AM - - - - - - - - - - - 2.0 5.0 6.0 7.0 9.0 10.0 10.0 10.0 11.0 12.0 12.0 12.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 -
15:00 PM - - - - - - - - - - - 3.0 6.0 7.0 8.0 10.0 10.0 11.0 11.0 12.0 13.0 13.0 13.0 12.0 11.0 11.0 10.0 9.0 8.0 5.0 3.
O -R ang e 1/2 - - - - - 0.5 0.6 0.7 0.8 0.9 1.0 1.0 1.0 1.0 0.5 0.3 0.2 - - - - - - - - - - - - - -
O -R ang e 2/3 - - - - - - - - - - - - 0.5 1.0 1.5 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 5.
O -R ang e 3/5 - - - - - - - - - - - - - - - - - - - - - 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 20.
Water exchange rate (Tank volume percentage) 16:00 PM - 10.0 - - 10.0 - - 10.0 - - 15.0 - - 15.0 - - 20.0 - 100 - 20.0 - 20.0 - 20.0 20.0 20.0 20.0 20.0 20.0 100.
Rotifer enrichment notes (ToC= 28-32oC)
Density: max. 1000 rot./ml
Time: max. 6hrs
Enrichment diet: DHA Protein Selco
Diet accumulated dose = 150 ppm, of which:
150 ppm at starting time (T0), and
150 ppm at 3hr post-start (T3)
eration: TUBE WITH 1.5mm holes AERATION
Enrichment diet: A1 DHA Selco
Diet accumulated dose = 400 ppm, of which:
200 ppm at starting time (T0), and
200 ppm at T12
Aeration: TUBE WITH 1.5mm holes AERATION
Enriched GSL Artemia feeding (Nau./ml)
Micro-diet weaning (g/m3/day)
Artemia enrichment notes (ToC= 28-32oC)
Harvest Nauplii at 24 hrs post-incubation
Density: max. 400 Nauplii/ml
Time: max. 22 hrs
FEEDING TIME TABLE FOR HATCHERY PRODUCTION OF BARRAM UNDI
ApplicationsWhen /
What
Days Post-hatching
Enriched rotifer feeding (rot./ml)
Non-enriched AF Artemia umbrela (Instar 1/ml)
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APPLICATION OF IMPROVED
TECHNIQUES IN VIETNAM
Center for Aquatic Animal Health and Breeding Studies – 3
batches of barramundi
– 9 m3 of rotifer culture tanks (900 rot./ml) enough for 3 mill. Eggs/batch
– Reduced Artemia cyst from 40 kg to 20 Kg for 1 million eggs
– Survival rates from hatching to 3cm TL = 38-42%
– Deformity rates < 2,7%
Center for Aquatic Animal Health and Breeding Studies
– 350 g hybrid grouper eggs – 58,000 fingerlings of 6-8 cm
– 200 g of E. malabaricus egg – 62,000 fingerlings of 8-10 cm – Deformity rates were 3.1 and 2.3 % respectively
Cương Lan Co., Ltd in Nha Trang city – 2 batches of barramundi
– Rotifer culture volume reduced from 60 m3 to 10 m3 for 4 million egg batch
– Deformity rates < 1,8%
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MAIN POINTS SUGGESTED TO BE
CONSIDERED IN CURENT HATCHERY PROTOCOL
FOR EFFICIENT HATCHERY PRODUCTION
Algae
Rotifer
Artemia
Formulated feeds
Day old
0 402 251410 18 60 80 APPROPRIATE GREENWATER CONDITION
CLEANED ROTIFER TANK
CORRECT ROT. QUANTIFICATION
ROTIFER FEED QUALITYPROPER ENRICHMENT
SELECT SUFFICIENT CYST
IMPROVE HATCHING EFF.
PROPER ENRICHMENT
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THANK YOU VERY MUCH FOR YOUR
COLLABORATION AND SUPPORT