logging in or signing up COMPOSITE FISH CULTURE coolchandini Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 2432 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: October 15, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript COMPOSITE FISH CULTURE: COMPOSITE FISH CULTURE JOE SHALINI .SComposite Fish Culture: Composite Fish Culture Stocking of cultivable fishes of different species which differ in feeding habits in same pond is called composite fish culture. Polyculture Mixed fish farmingObjectives : Objectives All available niches utilized Composite fish sps do not harm eachother Production increases 5 – 8 times than monoculture Polyculture Fishes are mixture of plankton & macrophyte feedersIndian system: Indian system Catla catla Labeo rohita Cirrihinus mrigala Labeo calbasu Labeo fimfriatus Labeo konitus Cirrihinus cirrhosaSlide 5: 100 – 1000 kg/ha/yr After Extensive experimentations 5200 kg/ha/12 ½ month Indian + Chinese in late 1950sIndigenous : Indigenous Catla catla (catla) Labeo rohita (rohu) Cirrihinus mrigala (mrigal) Surface feeder zooplankton Column feeder omnivore Bottom feeder detritivorousExotic : Exotic Surface, column & marginal Cyprinus carpio (common carp) Ctenopharyngodon idella (grass carp) Hypothalmichthys molitrix (silver carp) Bottom feeder Omnivore Herbivore Surface feeder PhytoplanktonSlide 8: Natural Fish Food Organisms (Phytoplankton)Slide 9: Natural Fish Food Organisms (Zooplankton)Slide 10: Natural food preferences of the Asiatic carps at different stages of their life cycle Species Stages of life cycle Larvae Fry Fingerlings Adult Catla ( Catla catla ) Protozoans, rotifers unicellular algae, etc. Protozoans, rotifers and crustaceans. Crustaceans, algae, rotifers and some vegetable debris Crustaceans, algae, rotifers, plant matters, etc. Rohu ( Labeo rohita ) - do - Protozoans, rotifers, crustaceans, unicellular algae. Vegetable debris, phytoplankton crustaceans, detritus, etc. Vegetable debris, microscopic plants, detritus and mud. Mrigal ( Cirrhinus mrigal ) - do - Crustaceans, rotifers, planktonic algae. Vegetable debris, unicellular algae detritus and mud. Blue-green and filamentous algae, diatoms, pieces of macrophytes, decayed vegetable matters, mud & detritus. Grass carp ( Ctenopharyngodonidella ) Protozoans, rotifers, copepod nauplii. Protozoans, rotifers, crustaceans, microzoobenthos, detritus, microalgae, plant fragments. Detritus and aquatic plants. Aquatic plants such as wolffia, lemna, spirodela, hydrilla, najas, ceratophyllum, chara, etc. Silver carp ( Hypophthalmichthysmolitrix) Unicellular planktonic organisms, nauplii and rotifers. Copepods, cladocerans and phytoplankton. Falagellata, dinoflagellata, myxophyceae, bacillariophycea, etc. Mainly phytoplankton. Common carp ( Cyprinus carpio ) Var. Communis Protozoans, rotifers, cereodaphnia, moina, nauplii, etc. Rotifers, cyclops, cereodaphnia, moina, nauplii, euglena, oscillatoria, etc. Diaptomus, cyclops, moina, cereodaphnia, ostracods, insects including chironomid larvae. Decayed vegetable matter, worms, molluscs, chironomids, ephemerids and trichopterans.Stocking density: Stocking density Selection of sps for stocking depends on nature of soil water of ponds stocking material f ish food INDIGENOUS EXOTIC: INDIGENOUS EXOTIC CATLA : ROHU: MRIGAL : COMMON CARP : GRASS CARP : SILVER CARP 1 1 1 2.5 2.5 2 1 1 1 2.5 1.5 3 1.5 3 1 2.5 1.5 3.5SPECIES INTER-RELATIONSHIP: SPECIES INTER-RELATIONSHIP Catla and silver carp surface fedeers Combination can be 1:1, 1.5:2, 1:3 Silver carp show better growthSlide 14: Mrigal and common carp 1:1 Common carp show better growth Monthly growth – 147g (commom carp) 76 – 107g (mrigal)Slide 15: Grass carp and rohu Their excreta is feed for bottom feeders Grass carp show better growth of 5.05kg/yr Frame filled with aquatic weeds to feed grass carp and rice branWater management: Water management Small, shallow and seasonal ponds get filled or dried whereas deeper and perennial ponds exhibit considerable fluctuation of water level. Irigation canal Tube well (electricity) Tube well (diesel) Dug wellSlide 17: Except common carp, all the other five Indian and Chinese major carps,cultivated under composite fish culture do not breed in pond conditions although they attain full gonadal maturity. However, they breed in bundh type tanks. The successful development of the technique of induced breeding through hypophysation ensures breeding of both Indian and Chinese major carps in captivity.Fish toxicant: Fish toxicant Bassia latifolia used as fish toxicant and also as organic manure instead of calcium hypochlorite. Bleaching powder in 25-30ppm kills unwanted fish sps such as Channa striatus, C. g achua, Glassobius giuris, etc., Plankton and benthoic fauna develop from 8 th day of treatment.Soil management and fertilization: Soil management and fertilization Old ponds- high organic content New ponds- low organic content Nutient store is locked in sediment Microcystis (algae) - utilize sediment nutrient during early developmentFish health & hygiene: Fish health & hygiene Major Factors for diseases Pathogen Susceptible fish Environmental conditions 3 steps for health management Prophylactic measures Fish health monitoring TreatmentSlide 21: Diseased fish exhibit physical & behavioural signs Slowing or complete stopage of food Abnomal swimming Surfacing & scrapping against bottom or sidesClinical symptoms: Clinical symptoms Excess mucous secretion Change in colouration Erosion of scales, fins, etc., Formation of cysts Abdominal swelling Bulging eyes Treatment Immersion in chemical solution Treatment via dietHarvesting and common hazards: Harvesting and common hazards Harvested using seine net (surface feeders caught easily) Pocket net catch bottom dwellersProduction : Production Indigenous – 4000 kg/ha/yr Exotic – 3000 kg/ha/yr Recent production (both) – 11,000 kg/ha/yr You do not have the permission to view this presentation. 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