In early 2024, Ms. Vo Thi Trang (born in 1993) in Quarter 7, Ho Xa town, Vinh Linh district, Quang Tri province built a black snail farm, applying closed-loop water filtration technology. With this model, Ms. Trang earns hundreds of millions of dong in net profit each year.
The farm has been operating stably, so each year, Ms. Trang can raise 2-3 crops - Photo: TRAN TUYEN
Taking us on a tour of the farm, Ms. Trang said that she had previously graduated with a bachelor's degree in banking and finance, and then worked for a bank in the province. During a visit to the North, she realized that the black apple snail farming model (also known as stuffed snail) brought high economic efficiency, and was a new model for Quang Tri province, so she came up with the idea of bringing the breed back to experiment with farming.
In 2022, she started building a farm, digging a tarpaulin-lined pond with a water surface area of 800 m2. In April 2023, she raised the first crop of 200,000 snails. “Because the farming method is natural, it depends a lot on weather factors, the pH in the water is unstable, so in the first year I could only raise 1 batch, the rate of lost snails is about 30%. After 6 months of farming, I harvested nearly 3 tons of commercial snails. After deducting expenses, the net profit is about 70 million VND,” said Ms. Trang.
Through research and study, in early 2024, Ms. Trang decided to switch to raising snails in greenhouses, applying a high-tech closed-circulation filtration system. To implement this model, she invested in installing electricity, building 4 snail ponds with tarpaulin lining with a total water surface area of 1,000 m2, greenhouses, and a closed-circulation water filtration system.
The total investment capital is 2.2 billion VND, of which the investment cost for the closed-loop water filtration system is over 641 million VND. After completing the infrastructure, in August 2024, Ms. Trang released the first batch of snails into the new pond. In 4 ponds, she released 350,000 snails. 4 months later, she harvested over 7 tons of commercial snails. After deducting expenses, she earned a net profit of 290 million VND.
According to Ms. Trang, snail farming using a closed-loop water filtration system helps reduce the farming time from 6 months to about 4 - 5 months, snails grow faster and are larger. Farming using natural methods only reaches 45 - 50 snails/kg, while farming snails in greenhouses using a closed-loop water filtration system reaches 35 - 40 snails/kg, with a loss rate of only 5% - 10%. On the same water surface area, natural farming only reaches 3 tons/1,000 m2, while high-tech farming reaches 7 tons/1,000 m2.
“Since applying closed-loop water filtration technology, I can raise snails at a higher density, with higher yields, shorter time, and reduced care costs. In addition, the water filtration system combined with the greenhouse helps snails increase their disease resistance. Wastewater is treated into clean, reusable water, not discharged outside, thus contributing to environmental protection. During the farming process, I do not use aquatic drugs or antibiotics to ensure the health of consumers. The black apple snail product raised in the greenhouse using my water filtration technology has been certified by VietGAP,” said Ms. Trang.
The food for black apple snails is 70% green food, such as: squash, pumpkin, luffa, duckweed, potatoes, cassava... grown by Ms. Trang on the farm, the remaining 30% is starch (rice bran, corn bran, industrial bran...). To proactively source food, ensure quality and reduce costs, she invested in a technology line to produce floating pellets for fish and snails, worth 300 million VND.
Around the farm, she grows 2 hectares of rice, digs a pond to raise freshwater fish, grows duckweed... with an area of 1 hectare to supply raw materials for processing bran. "Every day, I only feed a sufficient amount, along with ensuring that the water environment is always stable with a pH of 6.5-8.5. Thanks to the membrane cover system above and the closed-loop water filter below, the snail's living environment is always stable," Trang shared.
An interesting thing, while talking, Ms. Trang opened her smartphone to introduce to us. The phone screen displays detailed information about the temperature, water level, and water quality of each lake. When you want to control the electrical system, pump, or filter tank, just a few simple operations on the phone can be controlled anywhere.
Currently, the farm has been operating stably, so Ms. Trang raises 2-3 crops each year. After each crop, she selects high-quality parent snails to keep for breeding. Therefore, she is proactive in the source of breeding. Regarding consumption, immediately after harvesting, Ms. Trang's apple snails are purchased on the spot by contacts from Ha Tinh to the northern provinces. "I am very passionate about this model. Currently, the model has initially brought high economic efficiency and stable output, so in the coming time, I will maintain and expand production," Ms. Trang added.
Tran Tuyen
Source: https://baoquangtri.vn/trien-vong-tu-mo-hinh-nuoi-oc-buou-den-ung-dung-cong-nghe-cao-192389.htm
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