Experience in disease prevention for shrimp in the rainy season of Quynh Luu farmers

The heavy rain and storms of the past few days have made many shrimp farmers in Quynh Luu district extremely worried. Because before that, the weather was extremely hot, the shrimp were adapting to the environment and the way people cared for them.

For nearly a week, continuous rains accompanied by storm No. 3 have changed the shrimp’s living environment. In this situation, shrimp farmers are currently focusing on caring for and preventing diseases for this “difficult” species.

After the storm, Mr. Hoang Sam in Quynh Bang commune (Quynh Luu) increased nutrition to help shrimp eat more and digest well. Photo: Viet Hung

Mr. Hoang Sam, a shrimp farmer in Mai Giang 1 hamlet, Quynh Bang commune, said that the second crop of shrimp is often very difficult to raise because the weather changes between hot and rainy, so diseases arise a lot. If you do not have experience in farming, it is difficult to succeed. Like other households, in early June DL, he started to release the second crop of shrimp on an area of ​​1 hectare divided into 3 ponds. In each pond, he released 150,000 - 200,000 shrimp seeds. Up to now, after 40 days of care, the shrimp have grown well, reaching 170 shrimp/kg.

"During the rainy season, a lot of algae grows in the pond, so it is necessary to kill algae, increase water pumping, and clean the pond regularly. Especially this season, the air is often cold, so shrimp grow slowly, so it is necessary to increase the shrimp's resistance so that the shrimp can grow well" - Mr. Sam shared.

Increasing water pumping is an effective solution to prevent shrimp diseases during the rainy season. Photo: Viet Hung

According to Mr. Nguyen Van Trang, a shrimp farmer in An Hoa commune, during the rainy and stormy season, white-leg shrimp often suffer from diseases caused by viruses and bacteria such as: truncated antennae, worn legs, ulcers... Therefore, shrimp farmers need to reinforce pond banks, increase water circulation, sprinkle lime to treat the environment and create beneficial bacteria in the pond for shrimp to grow.

Thanks to proactive measures to prevent shrimp diseases during the rainy season, at the end of the season, Mr. Trang's family harvested a high yield; after deducting expenses, the profit was from 500 - 700 million VND/crop.

Shrimp farmers need to check the growth of shrimp to have preventive solutions. Photo: Viet Hung

Entering the 2018 shrimp farming season, Quynh Luu district has 465 hectares of shrimp farming. In the first crop, the harvested shrimp output reached 1,100 tons. To complete the plan of 2,800 tons/year, after the first crop ended, shrimp farming households in Quynh Bang, Quynh Thanh, Quynh Luong, An Hoa communes... urgently treated their ponds and entered the new crop.

Up to this point, people have released more than 150 hectares of shrimp for the second crop, with an average age of 30 - 60 days; the total expected area to be released is about 300 hectares.

Feeding shrimp garlic can prevent hepatopancreatic disease and white feces. Many farmers are currently applying this method and it has proven to be effective. Photo: Viet Hung

In order to proactively care for and prevent diseases for nearly 300 hectares of shrimp in the second crop during the rainy season, the People's Committee of Quynh Luu district is directing localities to propagate to farming households to implement. Accordingly, farmers need to check the growth of shrimp to have preventive measures; especially to recognize signs of shrimp disease in the rainy season to prevent diseases such as shrimp burying themselves, poor digestion of food and catching prey, susceptible to diseases such as bacteria and fungi, white feces disease...

Increase water fans and lime treatment in ponds to increase shrimp resistance during the rainy season. Photo: Viet Hung

Mr. Dau Duc Nam - Head of the Department of Agriculture and Rural Development of Quynh Luu district said that in the erratic weather conditions, it is easy to cause some dangerous diseases in shrimp. If people do not take the initiative to prevent, shrimp can easily get sick. To prevent shrimp, in addition to ensuring a reasonable water level in the pond, people need to use lime powder to treat the water in the pond or spread it on the bank; use lime bags hung at the source of water supply to limit the spread of disease.

In particular, people can apply the method of raising shrimp by feeding garlic to increase resistance, can prevent hepatopancreatic disease and white feces. At the same time, this method can release waste, avoid disease for shrimp.

Viet Hung