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Download Aquaculture - Glen Rose FFA
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Aquaculture Aquaculture • the controlled production of animals that normally live in water (fish farming) • three thousand year old practice started by the Egyptians and Chinese Aquaculture • two types of water creatures • freshwater • saltwater Aquaculture • animals raised for production may include • crustaceans (shrimp and crayfish) • mollusks (clams and oysters) • amphibians (frogs) • reptiles (alligators) Aquaculture • fish provide a high quality high protein supply of meat • as with other agriculture animals humans soon discovered that by producing their own aquatic animals that the supply available to the consumer would be more dependable and easier to harvest Aquaculture • commercial growth growing of fish • five million tons a year produced • demands of the consumer has increased Aquaculture • aquatic animals are produced efficiently and economically • fish account for 12% of the meat consumed in the US Fish Production • many advantages over other agricultural animals • 9lbs. Feed for 1lbs. Of grain for steer • 2lbs. Feed for 1lbs. Of grain a fish Fish Production • fish are ectothermic (coldblooded) • this means less energy goes into maintaining a constant body temp Fish Production • fish have a higher percentage of edible meat (up to 85%) • up to 6000 pounds fish can be raised on one acre Fish Production • Problems in fish production • dissolved oxygen level must be maintained • shipping the meat (fish spoils quickly) • operations are labor intensive • operations are high risk Fish Respiration • breathe oxygen • use gills to take oxygen from the air and put it to use in the bloodstream • gills act just as lungs do Fish Respiration • The oxygen is put into the water through… • photosynthesis • process in which aquatic plants which releases dissolved oxygen into the water
