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CN-122004152-A - Controllable underwater natural ecological raising method and system for groupers

CN122004152ACN 122004152 ACN122004152 ACN 122004152ACN-122004152-A

Abstract

A controllable underwater natural ecological breeding method and system for groupers, which is characterized in that macroalgae and meat blocks and mainly-bred groupers are thrown into a fish room, ecological control of lobsters, siganus and snapper fishes is continuously conducted, a controllable natural ecological system is formed by depending on relevant facilities in the fish room, a one-way food chain of the groupers can be formed after the controllable ecological system is stable, and the groupers are ecologically bred by feeding natural baits entering the fish room ecological system; except for feeding artificial baits when the early ecological system is not stable, a small amount of phagostimulant is thrown into the system to induce external baits to be biologically fed by using the underwater automatic baiting device at regular time intervals of 3-5 days, the artificial baits do not need to be fed, and a fish house is hoisted to collect the baits after about 250 days. The controllable fish house ecological system is utilized to form a one-way food chain ecology suitable for the groupers, the whole raising period of the groupers can be monitored, the cost is low, and the economic benefit is good.

Inventors

  • YE NING
  • ZHUANG LIYING

Assignees

  • 广东海洋大学

Dates

Publication Date
20260512
Application Date
20251231

Claims (10)

  1. 1. A controllable underwater natural ecological raising method for groupers is characterized in that: Putting large algae and meat blocks in a semi-closed fish house with a netting, putting the fish house into a sea area near a mariculture net cage, hanging the fish house in the sea, putting the main grouper fries into the sea, the lengths of the fries are 15-20cm, the densities are about 20-30 fries/m < 3 >, Continuously mixing and throwing the siganus, the longhairy antenoron, the lobster and the fish of the snapper family in the fish house, The ratio of the throwing amount of the siganus, the lobster and the porgy fish to the mantissa of the grouper fries is 1-2:100; The mantissa ratio of the fries of the garrupa and the grouper is 1:200; the body length specification of lobster, siganus and snapper is slightly larger than that of grouper; after the throwing is completed, the net seals the fish house, and the fish house is sunk into the sea; in the raising process, automatically feeding artificial proportioning feed in a fish house every day, wherein the weight of the artificial proportioning feed is 3-5% of the weight of the grouper fries in the current period, and the artificial proportioning feed is put in for 15-20 days; After the stable underwater natural ecology is formed in the fish house, the artificial proportioning feed is not fed, the biological phagostimulant is put in instead, Raising groupers to grow to 20-30cm, weighing 1.0-1.5 kg, lifting the fish house, and harvesting.
  2. 2. The controllable underwater natural ecological breeding method for groupers according to claim 1, wherein the groupers are put in a staggered manner with the siganus, the longhairy fishes, the lobsters and the snapper fishes, and the siganus, the lobsters and the snapper fishes are put in the water for 15-40 minutes, the growth rate of the mixed culture organisms is 0.5 cm/month of the siganus, 0.5 cm/month of the snapper fishes, 0.3 cm/month of the lobsters, the growth rate of the groupers exceeds the mixed culture organisms, and the growth rate of the groupers is 1.0-1.8 cm/month, and the body length of the groupers in the breeding period is ensured to be always greater than or equal to the mixed culture organisms.
  3. 3. The method for raising groupers in a controllable underwater natural ecology of claim 1, wherein the artificial proportioning feed comprises fish meal 55%, shrimp meal 15%, soybean meal 10%, flour 15%, vitamin premix 3% and mineral premix 2%, The artificial proportioning feed is prepared into 2-3 mm granules, and the nutrition indexes are 55-60% of crude protein and 8-12% of crude fat.
  4. 4. The controllable underwater natural ecological breeding method for groupers according to claim 3, wherein the underwater natural ecology is established after groupers are put in for 20-30 days, the biological phagostimulant is an allicin mixed vitamin E and small-particle artificial bait, the putting amount is 40-80 ml per cubic water body, and the feeding is carried out once every 3-5 days.
  5. 5. The controllable underwater natural ecological breeding method for groupers according to claim 1, wherein the macroalgae are thrown into 5-8 kg of water bodies per cubic meter, and the meat blocks are 5-8 kg.
  6. 6. A controllable underwater natural ecological breeding system for groupers using the method of any one of claims 1 to 5, which is characterized by comprising a fish house, wherein the fish house is arranged in the sea water at one side of the sea water aquaculture net cage, which is 15-20 m away; The fish house comprises a hollow frame, the hollow frame comprises four columns, a bottom column and a top column, the upper parts of the columns are connected through the top column, the lower parts of the columns are connected through the bottom column, the side surface of the hollow frame is provided with an opening, a hollow cavity is arranged in the frame, the outside of the frame is covered with an escape-proof net, the opening of the frame is covered with the escape-proof net, The artificial fish reef unit is arranged in the middle of the frame and is formed by bundling PVC-U pipes with the inner diameter of 5-7 cm and the length of 12-15 cm, and a plurality of artificial fish reef units are bundled; the light generating unit comprises an underwater fish attracting LED lamp, is hung below the top column and is used for attracting small fish and generating light of the fish attracting lamp, the light is automatically controlled to be extinguished in the daytime and turned on at night, and a cultivation period is continued; the large perching area is arranged on the periphery of the bottom in the frame and is fixed on the bottom column for perching the groupers, and the automatic bait casting unit is positioned above the frame and is used for casting biological phagostimulant and manually proportioning feed.
  7. 7. The controllable underwater natural ecological breeding system for groupers according to claim 6, wherein the columns, the bottom columns and the top columns are made of anti-corrosion cement, the hollow frame has a volume of 70-100 cubes and is made of 42.5R silicate cement added with 5% of salt-resistant agent.
  8. 8. The controllable underwater natural ecological breeding system for groupers according to claim 6, wherein the escape-proof net is made of polyethylene, has a line diameter of 2mm, has a breaking strength of more than or equal to 500N, and is fixed on the frame through net wires.
  9. 9. The controllable underwater natural ecological breeding system for groupers according to claim 5, wherein the large perching area comprises 300-400 round tubes with the inner diameter of 10-15 cm and the length of 40-50 cm, and the round tubes are horizontally arranged in the hollow cavity.
  10. 10. The controllable underwater natural ecological breeding system for groupers according to claim 5, wherein the automatic feeding unit comprises a feed bin, a feeding port is arranged in the feed bin, a discharger is arranged in the feed bin, the volume of the feed bin is 500L, and the discharge amount of the discharger is 10-100 ml/min.

Description

Controllable underwater natural ecological raising method and system for groupers Technical Field The invention relates to the technical field of grouper cultivation, in particular to a controllable underwater natural ecological raising method and system for groupers. Background The country proposes to develop blue granary, advance the strategic goal of deep-open sea cultivation, develop the deep-open sea scale cultivation economic fish work. The ecological environment of the deep open sea area is good, the water quality is good, and the method is very suitable for fish growth. But the sea surface of the deep open sea is high in wind and high in wave and water flow, is not suitable for living organisms under natural conditions, and is relatively calm at the bottom of the deep open sea, so that the method is suitable for living organisms of various types. Even in the offshore area, the seafloor ecological increment is not large, the space can be fully utilized, the increment is not fed with bait, the environmental pollution is avoided, and the quality of the aquatic products is reliably ensured. Therefore, the project designs a controllable underwater ecological breeding method for groupers, which not only provides proper living space for seabed low-value small-sized wild marine organisms, but also can attract fish houses to serve as natural baits for high-value large and medium-sized fishes, namely the controllable breeding groupers in fish houses, so that the aim of large-scale scientific utilization of deep open sea is fulfilled. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides an ecological breeding method and system for controllable underwater ecological breeding of groupers, which are used for ecologically breeding and growing in a natural state and are environment-friendly and reliable. The invention provides a controllable underwater natural ecological raising method for groupers, Putting large algae and meat blocks in a semi-closed fish house, putting the fish house into a sea area near a mariculture net cage, hanging the fish house in the sea, putting the main grouper fries into the sea, wherein the lengths of the fries are 15-20cm, the densities are about 20-30 fries/m < 3 >, Continuously mixing and throwing the siganus, the longhairy antenoron, the lobster and the fish of the snapper family in the fish house, The ratio of the throwing amount of the siganus, the lobster and the porgy fish to the mantissa of the grouper fries is 1-2:100; The mantissa ratio of the fries of the garrupa and the grouper is 1:200; the body length specification of lobster, siganus and snapper is slightly larger than that of grouper; after the throwing is completed, the fish house is closed, and the fish house is sunk into the sea; in the raising process, automatically feeding artificial proportioning feed in a fish house every day, wherein the weight of the artificial proportioning feed is 3-5% of the weight of the grouper fries in the current period, and the artificial proportioning feed is put in for 15-20 days; After the stable underwater natural ecology is formed in the fish house, the artificial proportioning feed is not fed, the biological phagostimulant is put in instead, Raising groupers to grow to 20-30cm, weighing 1.0-1.5 kg, lifting the fish house, and harvesting. The grouper fries are put in staggered manner with the siganus, the longhairy antenoron, the lobsters and the snapper fishes, and after 15-40 minutes of the grouper fries are put in, the siganus, the longhairy antenoron and the snapper fishes are continuously put in, the growth speed of the mixed culture organisms is that the siganus is 0.5 cm/month, the snapper fishes are 0.5 cm/month and the lobsters are 0.3 cm/month, the growth speed of the groupers exceeds the mixed culture organisms, and the growth speed of the groupers is 1.0-1.8 cm/month, so that the body length of the groupers in the raising period is always greater than or equal to the mixed culture organisms. The artificial proportioning feed comprises 55% of fish meal, 15% of shrimp meal, 10% of soybean meal, 15% of flour, 3% of vitamin premix and 2% of mineral premix, The artificial proportioning feed is prepared into 2-3 mm granules, the nutrition indexes are 55-60% of crude protein and 8-12% of crude fat, and the feeding time is 8:00 early and 18:00 late. After the grouper fries are put in for 20-30 days, the underwater natural ecology is established, the biological phagostimulant is an allicin mixed vitamin E and small-particle artificial bait, the putting amount is 40-80 ml per cubic water body, and the feeding is carried out once every 3-5 days. The macroalgae is thrown into 5-8 kg of water body per cubic meter, and the meat mass is 5-8 kg. A controllable underwater natural ecological raising system for groupers comprises a fish house, wherein the fish house is arranged in sea water at one side of a sea water culture net cage, which is