Farming pond and location selection:
Pond has area of 1,000 square meters-2,000 square meters, water’s depth level from 1.5-2 meters.
Hatching pond should be located near canals, irrigation ditchs where it is easy for water supply and sewerage and care control. Do not plant big trees around the pond which will cover the sunlight and the leaves falling pollutes the water and environment.
Pond renovation:
Drain out of water; clean layer slop; fill spelaean of crabs, frogs, rats, eels; repair border; cut the grass surrounding the pond bank to prevent crop pests in the period of stocking fries.
The amount of powdered lime to scatter the pond is
10-15kg per 100 square meters of pond. After spreading the powdered lime, the pont must be deposited for 2-3 days.
Supply water into the pond and add nutrition into the water:
After water supply flows into the ponds by aqueduct, awueduct has barrier with wire netting to prevent eggs, waste fish, crustacean. Water supply need to be deposited in sedimentation pond from 5-7 days before flowing into the pond.
Supply the water into pond 1 day before stocking fries
In seed hatching, need to add the water with natural feed in the early stage for fish fries.
With pond area of 1,000 square meters: Manure 2 kg fishmeal contained 40 percent protein plus 2 kg flour soy-bean to feed fish with natural food.
Before discharging fish, check up factors of water environment to ensure:
- pH: 7-8
- Temperature: 28-300C
- Oxygen ≥ 3mg/litre
Seed and density:
Fish stocks need to be carefully selected to ensure the quality and growth rate of fish during the raising period. They are selected from credible hatcheries with high traceability of broodstock which can meet veterinary and hygiene conditions as required.
The selection of fish stocks:
- The fish looks healthy, with no signs of illness or scratches; misshapen fish are eliminated. Observations in fish holding tools shown that fish move fast, near out of citellus, bright colour.
- The fish size must be equal.
- The most suitable time for stocking fries is in the early morning and the late afternoon.
- Density: 500 individuals/square meter.
Feed and Diet of feed: The following instructions are served for 1 million fries.
v The first week:
- Feed mixture for 1 time feeding
+ flour soy bean: 300g
+ flour milk: 300g
- Frequency of feeding: 5 times/day at 7h, 10h, 14h, 17h, 20h.
- Way to feed: dissolve the mixture and disperse the whole surface of pond,
v The second week:
- Feed 5 times per day at 7h, 10h, 14h, 17h, 20h. Feed is industrial feed flour with 40 percent of protein. Dosage: 0.5kg for 1 time feeding (5 times a day equal to 2.5 kg per 1 million fries a day).
Gradually increase the 20 percent amount of feed each day (depend on fish’s feed consuming ability).
- Way to feed: disolve the mixture with water and scatter the whole surface of pond.
v The third week:
Use industrial feed with the protein of 35-40 percent.
Times for feeding: 4 times per day (8h, 1h, 14h, 17h).
Gathering fish and feeding at one position to determine the suitable amount of feed.
v From the fourth week and later:
Use floating industrial feed with protein content 30-35 percent and suit with fish’s mouth.
Fish is fed 3 times a day. Fish must be fed with feed that is full of quantity and quality.
In the end of fourth week, to start classifying fish to distribute them in pond with density of 150-200 pecies/square meter.
Control and care:
- Prevent pests (snake, eel, waste fish, harmful fish) to penetrate into hatching pond.
- Observe the water colour in the ponds which must be between green and yellowish.
- When feeding fish, ensure 4 factors “quantity, quality, place, and time to help fish grow well and limit pollution at hatching pond.
- Periodically use some bioproducts to clean the water such as EM, Zeofish,...
- After the first rains of the rain season, use dissolved lime (settle down), about 20-30kg/1000 square meter to spread the whole surface of the pond.
- Use vitamin C regularly to raise resistance for fish
- Fish seed for commercial farming must ensure traceability and meet requirements of Ministry of Agriculture and Rural Development (MARD), must have quarantine certificate from relevant agencies. Breeding season: obey each locality’s yearly harvest crop schedule.
(vasep.com.vn) According to data from the Department of Fisheries, as of March 20, 2024, the shrimp farming area reached about 348,670 hectares, including 334,799 hectares of black tiger prawn farming area and 13,871 hectares of white leg shrimp farming area.
(seafood.vasep.com.vn) Vietnam's tuna exports reached around $84 million in March 2024, a 17% rise. Vietnam's total tuna export revenue for the first three months of 2024 was $215 million, up 19% from the same time in 2023 but down 17% from 2022. It is anticipated that tuna exports may miss the billion-dollar mark as in 2022 at this rate and the difficulties the business faces.
Vietnam raked in over US$200 million from exporting tuna to 86 markets worldwide during the first quarter of the year, representing a rise of 19% against the same period from last year.
Vietnam’s pangasius export to the United Arab Emirates (UAE) reached more than 7 million USD in the first quarter of this year, a rise of 67% against the same period last year. UAE mainly imported frozen fillets from Vietnam.
(seafood.vasep.com.vn) According to data from General Department of Vietnam Customs, the UK imported nearly $3 million worth of pangasius from Vietnam in the first half of March 2024. Cumulative pangasius exports to this market reached $12 million as of March 15, 2024, down 3% from the same period last year.
Total export revenue from agro-forestry-fisheries products in the first three months of this year is estimated at 13.53 billion USD, up 21.8% over the same period last year; and this results in a trade surplus of 3.36 billion USD, a rise of 96.5%, according to the Ministry of Agriculture and Rural Development (MARD).
The southernmost locality is developing shrimp farming models that generate large outputs but are environment-friendly.
(seafood.vasep.com.vn) An Giang province's aquaculture output is predicted to reach 172.3 thousand tons in the first quarter of 2024, up 6.37% (+10.3 thousand tons) from the same time the previous year.
(seafood.vasep.com.vn) According to data from Vietnam Customs, as of March 15, 2024, Vietnam's cephalopod exports reached more than 109 million USD, a slight decrease of 3% compared to the same period in 2023. In the first quarter of this year, Vietnam's cephalopod exports are expected to reach about 136 million USD, down 2% over the same period last year.
(vasep.com.vn) According to statistics from the International Trade Centre (ITC), Portugal is the 6th largest tuna importer in the EU. In 2023, the country's tuna imports from other countries increased by 9% compared to 2022, reaching nearly 241 million USD.
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