On August 11, the Phu Yen Animal Husbandry and Veterinary Sub-Department received information that lobsters and marine fish were raised in cages in the farming area of Phuoc Ly quarter, Xuan Yen ward, Song Cau town had died suddenly.
The Sub-department has directed the Animal Husbandry and Veterinary Station of Song Cau Town to check the actual situation in the locality.
Farmers in Xuan Yen ward, Song Cau town pick up dead lobsters. Photo: NL.
Mr. Nguyen Van Lam, Director of Phu Yen Provincial Sub-Department of Livestock and Veterinary Medicine, said that lobsters and marine fish were raised in Dam Dan area, in the farming area of Phuoc Ly neighborhood, Xuan Yen ward, had died. on 10/8.
Accordingly, 200 cages with about 29,240 lobsters and 185 cages with 1,220 fish of all kinds (mainly grouper and seabass) died. Shrimp and fish died of different sizes.
Phu Yen Animal Husbandry and Veterinary Sub-Department immediately after farmers discovered dead shrimp and fish, took measures to raise the cage to the upper water layer. Therefore, there is no longer an abnormal death of shrimp and fish.
Regarding the cause of death of shrimp and fish, according to Mr. Nguyen Van Lam, the actual inspection results did not detect any signs of disease. Shrimp and fish deaths occur in a short period of time, suddenly.
Lobsters in Xuan Yen ward died due to a lack of oxygen. Photo: TT.
In the past few days, the impact of storm No. 2 has disturbed the bottom layer, plus organic sediments have accumulated for a long time due to waste from farming activities, so toxic gases in the bottom layer are released, and toxic algae develop. . Thereby causing shrimp and fish to die suddenly due to lack of oxygen, toxic gas asphyxiation.
Faced with the above situation, in order to limit the risks caused by environmental incidents in the farming area, the Phu Yen Department of Livestock and Veterinary Medicine recommends that farmers do not raise shrimp and fish with high density. Farmers should thin the stocking density to avoid local hypoxia in cages, not increase the number of cages.
Along with that, cleaning cages to enhance water exchange, as well as regularly observing the water environment in the farming area and checking the health of farmed aquatic products, especially at night to detect problems promptly. happen.
Authorities did not find that the lobster died from the disease. Photo: NL.
If the environment changes abnormally or the aquaculture occurs asphyxiation, farmers need to quickly take measures to get close to the water surface. Simultaneously apply measures to create oxygen (aeration, oxygen pellets) to increase dissolved oxygen content in water for aquatic animals to breathe.
In addition, in order to increase the resistance of shrimp, farmers need to add vitamins, Bio-EM probiotics, minerals, etc. to the feed to limit diseases arising.
Note, do not use spoiled, rotten food for aquatic animals to eat, as well as strictly manage feeding to avoid excess. If seafood has reached commercial size, farmers need to harvest to reduce damage when environmental problems occur.
According to the People's Committee of Xuan Yen ward, 18 farming households in Phuoc Ly neighborhood lost 29,240 lobsters, equivalent to more than 2.4 billion VND and 1,220 marine fish, estimated at 45 million VND.
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