Скачать с ютуб HOW TO FARM VARAAL IN CAGE || CAGE FARMING|| വരാൽ ഇനി കൂട് കൃഷിയിലും в хорошем качестве

HOW TO FARM VARAAL IN CAGE || CAGE FARMING|| വരാൽ ഇനി കൂട് കൃഷിയിലും

about farming it's very important good qality seed &feed from good companies here we are presenting good quality VARAL SEED above 3"size contact us 8921485048 & 7510921791 #nishadsfarming #cagefarmingmalayalam #varalfarming Cage aquaculture involves the growing of fishes in existing water resources while being enclosed in a net cage which allows free flow of water. It is an aquaculture production system made of a floating frame, net materials and mooring system (with rope, buoy, anchor etc.) with a round or square shape floating net to hold and culture large number of fishes and can be installed in reservoir, river, lake or sea. A catwalk and handrail is built around a battery of floating cages. There are 4 types of fish-rearing cages namely: i) Fixed cages, ii) Floating cages, iii) Submerged cages and iv) Submersible cages. Economically speaking, cage culture is a low impact farming practice with high returns and least carbon emission activity. Farming of fish in an existing water body removes one of the biggest constraints of fish farming on land, ie., the need for a constant flow of clean, oxygenated water. Cage farms are positioned in a such way to utilize natural currents, which provide the fish with oxygen and other appropriate natural conditions. In view of the high production attainable in cage culture system, it can play a significant role in increasing the overall fish production in India. Suitable locations in Indian’s long coastline, vast brackish water areas available in coastal states and other underutilized water bodies can be better utilized by adopting cage culture. Since the investment is low and requires very little / no land area, this farming method is ideal for small scale fisherfolks as an alternative income source. This can be taken up as an household / women activity since labour involved is minimal and can be managed by a small family. The design of the cage and its accessories can be tailor-made in accordance to the individual farmer’s requirements. Advantages and disadvantages of Cage culture Cage culture of fish has advantages and disadvantages that should be considered carefully before cage production becomes the chosen method. A potential fish farmer can produce fish in an existing pond without destroying sport fishing; does not have to invest large amounts of capital for construction or equipment; and can, therefore, try fish culture without unreasonable risks. Advantages Cage culture has advantages which include: Many types of water resources can be used, including lakes, reservoirs, ponds, strip pits, streams and rivers which could otherwise not be harvested. A relatively low initial investment is required in an existing body of water. Harvesting is simplified. Observation and sampling of fish is simplified. Allows the use of the pond for sport fishing or the culture of other species. Less manpower requirement. Generation of job opportunities for unemployed youth and women. Additional income to fishers during closed seasons.Disadvantages Cage culture also has some distinct disadvantages. These include: Feed must be nutritionally complete and kept fresh. Low Dissolved Oxygen Syndrome (LODOS) is an ever present problem and may require mechanical aeration. Fouling of net cage. The incidence of disease can be high and diseases may spread rapidly. Vandalism or poaching is a potential problem. Navigation issues. Accumulation of unused feed and excreta will lead to water pollution as well as eutrophication. Change in water quality parameters. Conflicts within the local community. Predation by aquatic mammals and birds. Escapement. Overcrowding of aquatic organisms in cages. Farming of fishes in cages Site Selection Different criteria must be addressed before site selection for cage culture.The physico-chemical parameters like temperature, salinity, oxygen, waveaction, pollution, algal blooms, water exchange, etc. that determine whether a species can thrive in an environment. Other criteria which must be considered for site selection are weather conditions, shelter, depth, substrate, etc. Finally legal aspects, access, proximity to hatcheries or fishing harbor, security, economic, social and market considerations etc. are to be taken care. Cage Size It is a fact that costs per unit volume decrease with increasing cage size, within the limits of the materials and construction methods used. CMFRI has developed open sea cages of 6 m dia and 15 m dia for grow out fish culture and 2 m dia HDPE cages for seed rearing. Ideal size for grow out cage is 6 m due to its easy maneuvering and reduced labour. For fingerling, 2m cages can be used.Cage culture is the most efficient way of raising fish Cage can erected in various suitable water bodies in various sizes and shapes Stocking density of fishes in cage depends on the species cultured and growth rate of fishes