TRAINING HALL DETAILS
ADARSH VIDYAPEETH has Training hall for more than 15 BIOFLOC FISH CULTURE TRAINING and also accommodation facility is available at PANIPAT
BIOFLOC FISH CULTURE TRAINING
Introduction The global population is expected to reach 9.6 billion by Yr. 2050 and as the demand for animal protein is increasing year by year it is a challenge to provide quality protein by safeguarding its natural resources for future generations. In this context, aquaculture plays a key role in promoting health by providing animal protein as well as generating employment and economic growth. Biofloc Technology (BFT) is considered as new “blue revolution” since nutrients can be continuously recycled and reused in the culture medium, benefited by the minimum or zero-water exchange. BFT is an environment friendly aquaculture technique based on in-situ microorganism production. Biofloc is the suspended growth in ponds/tanks which is the aggregates of living and dead particulate organic matter, phytoplankton, bacteria and grazers of the bacteria. It is the utilization of microbial processes within the pond/tank itself to provide food resources for cultured organism while at the same time acts as a water treatment remedy. Thus, this system is also called as active suspension ponds or heterotrophic ponds or even green soup ponds. How BFT works? Biofloc system is a wastewater treatment which has gained vital importance asü an approach in aquaculture. The principle of the technique is to maintain the higher C-N ratio by addingü carbohydrate source and the water quality is improved through the production of high quality single cell microbial protein In such condition, heterotrophic microbial growth occurs which assimilates theü nitrogenous waste that can be exploited by the cultured species as a feed and also works as bioreactor controlling of water quality. Immobilization of toxic nitrogen species occurs more rapidly in biofloc becauseü of the growth rate and microbial production per unit substrate of heterotrophs are ten-times greater than that of the autotrophic nitrifying bacteria. This technology is based on the principle of flocculation within the systemü 3 Composition and Nutritional Value of Biofloc Biofloc is a heterogeneous aggregate of suspended particles and variety of microorganisms associated with extracellular polymeric substances. It is composed of microorganisms such as bacteria, algae, fungi, invertebrates and detritus, etc. It is a protein rich live feed formed as a result of conversion of unused feed and excreta into a natural food in a culture system on exposure to sunlight and vigorous aeration. Each floc is held together in a loose matrix of mucus that is secreted by bacteria and bound by filamentous microorganisms or electrostatic attraction. Large flocs can be seen with the naked eye, but most of them are microscopic. Floc size range from 50 – 200 micron. A good nutritional value is found in Biofloc. The dry weight protein ranges from 25 – 50%, fat ranges 0.5 – 15%. It is a good source of vitamins and minerals, particularly phosphorous. It has an effect similar to probiotics. The dried biofloc is proposed as an ingredient to replace the fishmeal or soybean in the feed. Advantage of BFT Eco-friendly culture system.Ø It reduces environmental impact.Ø Judicial use of land and waterØ Limited or zero water exchange systemØ Higher productivity (It enhances survival rate, growth performance, betterØ feed conversion in the culture systems of fish). Higher biosecurity.Ø Reduces water pollution and mitigate the risk of introduction and spread ofØ pathogens It reduces utilization of protein rich feed and cost of standard feed.Ø It reduces the pressure on capture fisheries i.e., use of cheaper food fish andØ trash fish for fish feed formulation. 4 Species suitable for Biofloc Culture Major cultivable fish species in BFTØ A basic factor in designing a biofloc system is the species to be cultured. Biofloc system works best with species that are able to derive some nutritional benefits from the direct consumption of floc. Biofloc system is most suitable for species that can tolerate high solids concentration in water and are generally tolerant of poor water quality. Some of the species that are suitable for BFT are: Air breathing fish like Singhi (Heteropneustes fossilis), Magur (Clarias batrachus),· Pabda (Ompok pabda), Anabas/Koi (Anabas testudineus), Pangasius (Pangasianodan hypophthalmus) Non air-breathing fishes like Common Carp (Cyprinus carpio), Rohu (Labeo· rohita), Tilapia (Oreochromis niloticus), Milkfish (Chanos chanos) Shellfishes like Vannamei (Litopenaeus vannamei) and Tiger Shrimp (Penaeus· monodon) How to Prepare the Inoculum? Method 1: For 15000 Litres of fresh water 150 Litres of inoculum is required for the floc development Step 1 Take clean tub/can with 150 Litres of water and continue vigorous aeration Step 2 Add 3 Kg of pond soil + 1.5 gm of Ammonium sulphate /Urea + 30 gm of carbon source (Jagerry /Wheat flour /Tapioca flour) Step 3 Mix it well with water in tub and provide adequate aeration Step 4 The inoculum will be ready after 24-48 hrs and it can be transferred to main tank 5 Daily addition of carbon source is required for the development of floc. For· every 1 kg of feed given (with 25 % of crude protein), 600 gm of carbon source is to be added to the system to maintain C: N of 10:1. Once the floc volume reaches 15-20ml further addition of carbon source is not· required Method II: Step 1 Take clean tub/can with 130 Litres of water and continue vigorous aeration Step 2 Add 20 Litres of pond water/RAS water (before filtration) + 30 gm of carbon source (Jagerry /Wheat flour /Tapioca flour) + 10 gm of probiotic (with Bacilus Sp., Aspergilus Sp. etc with a total concentration of 10x109 CFU/gm) Follow the remaining steps as mentioned in method 1 *NB: Well developed inoculum will be turbid with foam on the water surface (Ideal Volume of Floc in Imhoff cone for shrimp is 10-15 ml/L and for Fish 25-35 ml/L)
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There are many variations of passages of Lorem Ipsum available.
There are many variations of passages of Lorem Ipsum available.
There are many variations of passages of Lorem Ipsum available.
ADARSH VIDYAPEETH is an autonomous body, which is promoted by MLK INDIA SKILL DEVELOPMENT MISSION FOUNDATION was legally established under the guidance of jurists, eminent educationists, and social workers for the development of education in wide areas.