In recent years, shrimp diseases complicated brackish water leads to higher risks of shrimp farming, shrimp farming costs are increasing. Against this backdrop, the shrimp farming biosecurity by utilizing bagasse is considered a new solution shrimp, effective first step.

Bagasse benefit pond

In brackish water shrimp farming activities, the accumulation of organic compounds containing nitrogen in the pond leading to the pond environment is polluted issues commonly encountered. The reason is that the body can only absorb shrimp 20-30% protein in the diet, the rest will be discharged to the outside through distribution; plus the management of the food is not good for shrimp farmers, leading to excess food. These compounds accumulate on the bottom pond will eventually turn into ammonia (NH3 least).

For good pond management, the control of ammonia is controlled by the algae, but for intensive shrimp farming, semi-intensive, the amount of ammonia in the pond is very large, so most of sedimentation pond bottom. Excess ammonia into nutrient source for nitrogen-fixing bacteria through nitrification reaction and creates toxic NO2. To solve the problem of water this time, instead of the water solution is simple and effective.

However, the replacement water to brackish water shrimp ponds do not always perform well, because most of the shrimp farmers lack water treatment settling ponds before the water level in ponds, pathogens in the environment of high , complicated disease. Therefore, to eliminate all inorganic nitrogen compounds such as ammonia (NH3) and nitrite (NO2) to help develop good shrimp is the addition of carbon (C) on the pond is considered to be the most feasible.

According to the literature, the more carbon into the pond will increase the efficiency of absorption of inorganic nitrogen sources in the pond by heterotrophic bacteria. Because, the heterotrophic bacteria need organic carbon source along with nitrogen in a certain proportion to produce new cells. However, in aquaculture ponds, nitrogen accumulates at the bottom of the pond a lot, but very limited carbon source. Hence, if the appropriate additional carbon into shrimp ponds, the heterotrophic bacteria will metabolize better nitrogen availability in the pond as well as inorganic substances such as NH3, NO2.

Through fact-finding in our country, bagasse in sugar mills have been tossed out in large, accounting for 20-30% of the sugar cane juice offers. This is a product with a lot of organic carbon, specific components of dry bagasse about 45-55% cellulose, 20-25% hemicellulose, lignin approximately 18-24%, 1-4% ash and 1% wax . Depending on the type and characteristics of sugarcane where sugarcane that the chemical composition of the substance in dry bagasse can change. Therefore, bagasse pulp is a very good material used to supplement organic carbon in brackish water shrimp ponds intensive, semi-intensive.

Successfully applied in practice

In three recent cases of shrimp, Vo Hong Ngoan, who was dubbed the "king prawns" in Vinh Trach Dong, Bac Lieu province consecutive winning seasons in the disease situation in the Mekong Delta provinces complicated. The most important reason for this success is due to his Ngoan measure Biosafety adopted by utilizing bagasse.

Ngoan He said: "At first I did not believe this, but due to the persuasion of a well test engineers aquatic breeding ponds by mixing 2 bagasse into ponds, ponds not give any waiting outbreak. Till now , 2 for white shrimp from using bagasse was successful, and for nursing tiger prawn harvest preparation. "

According behaved during the sewing process from pond to harvest without the use of any chemical substance used for seafood, just use bagasse applied to the water. Bagasse powder will make the alkalinity and pH stability of shrimp ponds, water has many beneficial microorganisms and bacteria Vibrio parahaemolyticus (necrosis in shrimp hepatopancreas) almost none.

The bagasse used in shrimp farming to help reduce the investment cost of chemical, biological products in shrimp by 60-70% without using lime water treatment, do not use the environmental quality improvement, probiotics school system by algae and microorganisms in ponds good and stable development. Currently, the price of flour sold in the oven bagasse sugarcane 2,500 VND / kg. With about 2,500 doses using bagasse kg / ha, the total cost of using bagasse (instead of drugs and chemicals used in shrimp) is only about 10 million VND / ha.

Dr. Vu Anh Tuan, head of Institute Institute Sea Minh Hai (Ca Mau) who were surveyed, animal research and testing methods using bagasse shrimp asserted that this approach can be said to be successful most, though not 100% shrimp are not sick, but reduced mortality.

According to Tuan, bagasse pulp often used to cultivate additional substances such as iron, zinc, phosphorus for plants. At home, bagasse powder help mineral supplements for the flora as algae growth, ... the application of this method, beneficial microorganisms thrive, thereby stabilizing pH in water. Therefore, farmers do not need to use more lime to raise the pH of the water quality, especially in the first two months of the investment cost should be significantly reduced.

Method shrimp biosecurity by utilizing bagasse although no scientific studies all the way, but with the initial results we can say this is the new way to help reduce production costs, an full, effective and create products to ensure food safety for consumers.