'Million Of Catfish Eating Food in Pond | Hybrid Magur Fish Farming Business in India Pond preparation Between harvests, stocking ponds are dried out and accumulated sediments from the previous crop are removed. These sediments contain organic matter (dead plankton, faeces, uneaten food and old moults) and mineral matter (soil particles eroded from pond walls by aeration). Prior to filling, the ponds are limed to encourage plankton growth and minimise disease problems. The ponds are filled through screened inlets, fertilised with both organic and inorganic fertilisers and allowed to stand for 7-10 days to allow the plankton to develop. Feeding Ponds are stocked with post-larvae at rates varying from 25-40 per square metre. The post-larvae are weaned from plankton to manufactured feed over the first 4 weeks. Prawns are fed 3-4 times per day, with the last feed being given close to dark. Feed is blown into the pond using an engine-driven blower. Consumption is measured at each feed by using feed trays that are submerged along the pond edges. Growth rates are monitored via weekly sampling of the prawns. This feed management enables farms to minimise feed wastage and maintain good feed conversion rates. Water quality Stable pond conditions and good water quality are necessary to maximise survival and growth rates. Paddlewheels and aspirators are normally used for aeration. The aeration generates a current causing the sediments to accumulate in the centre of the pond. This maintains a clean feeding area around the pond edge. As the quantity of prawns (biomass) increases, the level of aeration required increases to maintain the levels of dissolved oxygen in the water. A minimum of 1 kilowatt of aeration is required for each tonne of prawns in the pond. Exchanging water controls the density of algal blooms and ammonia levels in the ponds. Water exchange is minimised to help maintain stable water conditions. Wastewater is removed from the bottom of the pond and drained into sedimentation or treatment ponds before being reused or released to the environment. Harvesting Crops are normally ready for harvest in 120-150 days; however, the time will depend on stocking rates and water temperature. Ponds are sometimes partially harvested using traps or seine nets, but more often a drain harvest is used. The water is released through the outlet structure, which has a net fitted over the pipe and the prawns are then caught in this net. Partial harvests may be used early in the season to reduce the density of prawns in the pond and allow the prawns remaining to grow to a larger size. Normally, prawns are harvested when they are 25-35g each. Prawns are washed, graded and generally cooked before marketing. Some prawns are sold green and others are individually quick-frozen for storage and sale at a later How to Start a Catfish Fishery : Often associated with high startup and overhead costs, starting a catfish fishery can yield large profits over time with the proper implementation of a business plan and good marketing. 1. Acquire flat land for a pond. The location of the pond should have vehicle access, be made of a compact soil, be free of silt, be 5 to 7 feet deep and have a gently sloping bottom. A good starting size for a Catfish pond is 1 to 6 acres. 2. Construct the pond. If the land already has a pond on it, you can use it for your fishery. Otherwise, you will need to excavate the land to create a pond by removing the topsoil and vegetation and using clay subsoil. Install the water supply and drain lines and cover them with good quality clay. At this time, also install the oxygen meter agitators and aerators. 3. Plant grass seeds around the pond to help prevent erosion. 4. Fill the pond with catfish. The number of catfish to stock in your pond depends on its size, the aeration system you installed, your experience level with aquaculture, the size of your market and amount of business risk you are willing to accept. It is best for new catfish farmers to start with a smaller amount of fish .. no more than 6000 fish per acre… and expand with experience. To help ensure the health of your catfish, purchase vaccinated fingerlings that you have had tested for diseases by an independent lab. Before placing the fingerlings into the pond, temper water in their transport tanks with water from the pond so they are not stressed by the change in water. 5. Feed the fingerlings catfish feed. Each small fish will eat 3 percent of it body weight daily. The warmer the temperature of the water, the more the fish will eat. When the water temperature is over 65 degrees, you should feed the catfish daily. The ideal water temperature for catfish is 86 degrees, but they can survive in temperatures of 46 degrees. Store the food in feed bins that you keep in a cool, dry location. #catfish #hybridmagur THANKS FOR WATCHING..... #FishWorld'
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