September 1, 2011

 

Vietnamese aquaculture sector faces problems

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Although Vietnamese central region's aquaculture has flourished in recent years, it is currently facing numerous issues, including a deficiency of baby shrimp for cultivation and contaminated groundwater from insufficient waste treatment.

 

Farmers have dramatically increased their incomes but disease outbreaks among contaminated shrimp; particularly those that are purchased unquarantined, have caused massive deaths and polluted groundwater.

 

However, the sector continues to grow as farmers apply advanced farming techniques and raise a variety of aquatic species.

 

Central Thua Thien - Hue Province, for example, increased its aquaculture area from 5,402 hectares in 2006 to 5,800 hectares last year.

 

Farmers in the province, which has 22,000 hectares of lagoons, now farm black-tiger shrimp, white-leg shrimp, crab, sweet snails and bivalve molluscs, as well as marine fish and freshwater fish.

 

In Phu Yen Province, the area under aquatic cultivation increased by 90 hectares from 2006-10, with output rising 2.4 times.

 

The production value of aquaculture reached VND246.7 million (US$11,840) per hectare in 2010, up VND8.7 million (US$418) compared to 2006, according to Phu Yen Province's Department of Agriculture and Rural Development.

 

The province's aquaculture sector earned VND2.44 billion (US$100,000) last year, or 34.6% of the province's agro-forest and seafood income.

 

A shortage of shrimp fries is affecting growth, according to Vo Thi Tuyet Hong, head of Thua Thien - Hue Province's aquaculture sub-department.

 

She said breeding centres which grew and sold fries to aquaculture farmers could only meet 10-20% of demand in the province.

 

In Thua Thien - Hue, the number of shrimp-breeding centres, which provide farmers with shrimp fries, fell from 29 in 2005 to 12 in 2009.

 

The drop in the number of centres occurred because of several factors, including inclement weather and competition from other breeding centres in the south.

 

Also, the rapid development of aquaculture without proper zoning in many localities has contributed to environmental pollution, leading to disease outbreaks among various species.

 

Last year in Thua Thien - Hue, disease broke out in shrimp ponds covering 1,000 hectares of a total of 3,600 hectares of ponds.

 

Quang Nam Province, for the same reasons, saw its shrimp output fall by 1,130 tonnes in the first few months of last year.

 

Ngo Tan, deputy director of Quang Nam Province's Department of Agriculture and Rural Development, said the shrimp-fry shortage and untreated waste water had contributed to lower output.

 

Province officials are taking a number of steps to address these problems with an aim to create sustainable production.

 

Le Truong Luu, deputy chairman of the Thua Thien - Hue People's Committee, said his province had targeted an annual aquaculture output of 20,000 tonnes by 2015, up 7,000 tonnes compared to the present.

 

The province wants to give priority to brackish-water aquatic species, including black-tiger shrimp, crabs and bivalve molluscs.

 

To solve the aquatic-fry shortage, the province will set up new aquatic-breeding centres and upgrade existing ones, including a 30-hectare shrimp-breeding centre in Phong Dien District. The shrimp fries will be used for farming in ponds in sandy areas.

 

Thua Thien - Hue will also carry out other projects, including improving the capacity of aquatic officials and veterinary forces and setting up systems to monitor disease outbreaks and water pollution.

 

Quang Nam Province, which does not have large lagoons like Thua Thien - Hue, has more than 4,700 hectares devoted to fresh-water aquatic cultivation, including 3,879 hectares of reservoirs.

 

Last year, the area under brackish-water aquaculture in Quang Nam reached 2,130 hectares, with annual output of 8,170 tonnes.

 

The province plans to set up 10 disease-free shrimp farming zones covering an area of 30 hectares each by the year-end.

 

It has also been encouraging farmers to invest in tra catfish cultivation and breed more freshwater-fish species.

 

In addition, by 2015, more than 50% of aquaculture areas in Quang Nam are expected to apply national standards of food safety and hygiene.

 

Tan said his department would work with agencies to improve the quality of aquatic produce and inspection of aquatic-breeding centres and animal-feed producers.

 

The department has also called on investors from all economic sectors to invest in the aquaculture sector.