Octopus artificial breeding technology

Octopodidae is the largest family of cephalopods, commonly known as octopuses. The octopus has smaller eye diameters on both sides of the head, and there are four pairs of wrists in front of the head and around the mouth. The length is similar or not equal. There are about 140 kinds of sea areas around the world. Most of them are shallow-sea species and there are also a few deep-sea species. Most of the wrists on the family of Braconidae have two rows of suction cups, and some types have only a single row of suction cups. Right or left third wrist. The deformation of the top of the wrist, called "end device", without a wrist. The brain is oval, smaller and has no flesh fins. The inner shell degraded, leaving only two small needles on both sides of the back and no light emitters. The female body has 1 pair of fallopian tubes. The main camp benthic life crawls on the seabed and can also be paraded in the bottom water with the help of the action of the funnel spray. There are short-term reproductive and over-winter migratory habits, feeding on lobsters, shrimp, crabs, shellfish and benthic fish. It is often a prey for sharks and sea otters. The octopus differs greatly in the number of eggs laid, ranging from a few thousand to more than 100,000 eggs. The eggs mature in batches, and are produced in batches. The resulting eggs are shaped like rice grains and are often linked together. There is a certain amount of yield in both the true sea bream in the southern coast of China and the short sea bream in the north coast. In addition to consuming octopus, octopus still has the effect of supplementing blood and replenishing qi and converging muscle growth. 1. Biological characteristics and artificial breeding of octopus are temperate mollusks. Adaptation to the water temperature can not be lower than 7°C, the specific gravity of seawater 1.021 is most appropriate, and the environment with low salinity will die. The bottom of the sea area is preferably a gravel zone. The water temperature can be laid at an annual temperature above 12° C., and the total length of the larvae is about 3 mm after hatching. The larvae can eat large animal plankton and grow. When the total length is up to l0-13 mm after 45 days, the sedimentation occurs. In submarine camp benthic life. Octopus can be used cage culture (3.94mX1.82mX0.9m, mesh is smaller than the individual species, need to add a net cover to prevent octopus escape. Octopus more in the wavy quiet harbor breeding, the appropriate water temperature is 15 to 23 °C, Under normal circumstances, most of them are cultured in spring-summer (June and July) and autumn (l0-1-2 months). Seedlings: The octopus caught by cages is most suitable, but it can also be used when caught from the bottom dragnet. The amount varies depending on the temperature of the water and the condition of the running water, using 36-42kg of cages per cubic meter of cages and 25-30kg of cages per cubic meter of cages in order to prevent seedlings from killing each other and keeping the same seedlings. Seedlings and seedlings should be put into the cage after satiation.The bait material can be used to feed low-priced small trash fish and shellfish, frozen miscellaneous fish can also be put, but it must be fresh, and the residual bait can be used for a long time. It is better to reduce or stop feeding for l-2 days, and the residual baits will cause water pollution, and if they stop feeding for more than 3 days, they will kill each other.The water temperature is about 13°C, and the feeding behavior is irregular, and the water temperature below 7°C does not feed on the octopus. Rate; Adoption of caged seed after 2 months of breeding survival rate of 70% In 80% of the species, the survival rate of seedlings using fishing and fishing is about 50%, and the seedlings are stocked in cages, and the mortality rate on the 15th is 20% to 30%, and then the mortality rate is gradually reduced. After 15 days breeding, the octopus is divided. The cages are divided into three types: big, medium, and small, and they are kept in different cages.The cages are cleaned 15 days in spring and autumn, once in winter, and cleaned in 30 days in winter.2.Cooling methods for octopus can be used after octopus harvest. The first step is to facilitate the transport of octopus and keep it warm: The first step is to pick up the live octopus after harvesting, and then pick out the octopus, which is sturdy, and remove the damage and substandard octopus. At -1, rely on the octopus's own physiological activities to remove sediment, mucus, and dirt in the suction cup. When it is not clean, you must not remove any debris from the fish with your hands or any tools. Drain the dirty water. The cleaned seawater is purified again, and the octopus should not be thrown straight when water is added, and the octopus should not be touched by hand or other tools during the entire process.The octopus captured from the sea can survive for some time after being immersed in fresh water, but has been soaked in fresh water. Octopus, cold It is very difficult to survive after hibernation.The second step is to put ice in seawater in a sanitary plastic bag and bring the temperature of the sea water down to close to 0°C.At this time, the octopus is in dormant state.Then the dormant octopus is put into plastic bags. In addition, add 20% of clean seawater with a water temperature close to 0°C, fill it with oxygen and seal it with a zest. The volume of oxygen occupies the same volume as that of seawater and octopus. The third step is to increase the thickness of the incubator at the bottom and around it by 2cm. Pack octopus in a sealed plastic bag, place the packed octopus, put ice on the top, cover the lid of the incubator, and seal it with tape.Cooling method is appropriate at 0°C. Temperature drop below 0°C will affect The survival rate of octopus, and even frozen octopus, should be completed within 3-5 days from freezing to selling.

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