Reducing risks, increasing profits many times thanks to Semi Biofloc shrimp farming technology

Increase productivity, reduce risk from Biofloc technology

Currently, Binh Dinh has about 1,000 hectares of ponds and lakes for raising whiteleg shrimp in the direction of semi-intensive and intensive farming with a very low average yield, only about 8 tons/ha. During the farming process, most farmers use chemicals and antibiotics to treat ponds and prevent diseases in shrimp.

Some shrimp ponds also treat water with chemicals, leading to the risk of environmental pollution in the whole area, especially water pollution in the ponds. Therefore, the rate of shrimp diseases is increasing, causing great losses to farmers. From the above fact, Binh Dinh Agricultural Extension Center has researched and perfected the technical process of commercial whiteleg shrimp farming by applying Semi-Biofloc technology.

The leading unit in the application of Biofloc technology in whiteleg shrimp farming in Binh Dinh is Viet Uc - Phu My Co., Ltd. This is the most advanced biotechnology today. According to Mr. Nguyen Van Thao, Director of Viet Uc - Phu My Co., Ltd., with this technology, the use of water in shrimp farming is very economical. During the production process, only about 300% water is used, while the conventional process uses up to 3,000%. Biofloc technology ensures environmental sustainability in shrimp farming.

“During the farming process, we do not use any chemicals. With a high-tech production process, we can stock at a density of 300-500 fish/m2, raising 2 stages, achieving from 3.5 to 4 farming crops/farm/year, with an output of 40 - 60 tons/ha. The total harvest in 2021 is 1,200 tons, in the first 7 months of 2022 we have harvested 850 tons. It is expected that in the last 5 months of 2022, an additional 1,250 tons will be harvested, so in 2002, we will be able to produce 2,100 tons of high-tech shrimp, "said Mr. Thao.

Nhu Van Dat, a technician at A5 commercial shrimp farm under Viet Australia - Phu My Co., Ltd., added: "Bio-safe shrimp farming does not use antibiotics, shrimps are only fed micro-organisms. Conventional shrimp farming is allowed, due to its low cost, and higher profit compared to conventional shrimp farming.

We feed the shrimp by remote control system. This system has 3 parts: the control assembly, the feeding machine and the transducer unit. The probe part is responsible for checking the shrimp's appetite, if the shrimp eats strongly, the feeding machine will automatically spray more food so that the shrimp can eat enough. If the food is left over, the feeding machine will automatically adjust the reduction so that the shrimp can eat just enough. Using this system greatly reduces the labor force of workers, "said Dat.

The goal of 100% application of advanced technology

“The shrimp farming with advanced technology has both improved productivity and output and improved the quality of commercial shrimp, meeting the increasing requirements of the market. At that time, commercial shrimp will be eligible to participate in the value chain, increasing economic efficiency. With many important improvements after piloting in some models, so far we can confirm that Semi-Biofloc technology is suitable for the conditions of the farming area and the capacity of shrimp farmers in Binh Dinh”, Mr. Nhat confirmed.

According to Nhut, Semi-Biofloc technology has many outstanding points, such as waste and excess food in the farming system which are converted by beneficial bacteria into their biomass in the form of floc particles as food for shrimp. This process reduces the rate of food loss, helping to purify the water.

Floc-forming bacteria also have the ability to inhibit the growth of pathogenic microorganisms. Thereby improving the water environment, helping shrimp to increase resistance and grow quickly. In addition, this technology also helps to reduce the replacement and supply of new water for ponds, saving fresh water. In particular, the process of shrimp farming according to Semi-Biofloc technology helps reduce investment costs by 8-10% compared to the long-standing shrimp farming method of farmers.

“In order to introduce Semi-Biofloc technology into white leg shrimp farming, farmers must prepare sufficient facilities and techniques to meet the requirements, including the system of ponds covered with canvas and roofs; Water treatment system; drying fan system. Simultaneously, apply a 2-stage shrimp farming process: Breeding shrimps after 25-30 days of nursing to reach sizes from 600-800 shrimp/kg and then transfer to ponds. Stocking density is 180 - 200 fish/m2. During the rearing process, farmers apply molasses incubation to create food adhesion; Floc culture is provided for ponds,” shared Mr. Tran Quang Nhat.

According to Huynh Viet Hung, Director of Binh Dinh Agricultural Extension Center, the province has developed a master plan to develop the fisheries sector with a vision for 2030, aiming to increase productivity, output, and economic value. for commercial shrimp. Accordingly, Binh Dinh sets a target of 100% of semi-intensive and intensive shrimp farming areas applying advanced production techniques, of which vannamei shrimp is the main subject.

According to the vision to 2030, the area of semi-intensive and intensive whiteleg shrimp farming in Binh Dinh is 953ha, an increase of 23.7% compared to 2020; strives to achieve an output of nearly 21,000 tons, up 93.7% compared to 2020.

“Over the past time, Binh Dinh Agricultural Extension Center has piloted the application of 4 models and transferred techniques to about 60 shrimp farmers in 2 districts of Phu Cat and Phu My. In order to be able to transfer the package and help shrimp farmers quickly apply new technology, the Center will perfect Semi-Biofloc technology to suit local conditions and continue to build a number of pilot models. , soon transferred to shrimp farmers, ensuring the application of new technology with high efficiency", said Mr. Huynh Viet Hung, Director of Binh Dinh Agricultural Extension Center.