A kind of method for indoor high-density breeding square star worm

Abstract

The invention belongs to the technical field of marine organism cultivation, and relates to a method for indoor high-density cultivation of the square star worm. It includes the following steps: 1) Prepare the breeding device: including a breeding pond, a growing sand bed, an air supply component, and an inlet and drainage component. ;2) Preparation of aquaculture feed: Aquaculture feed includes sedimentary microalgae, floating mud powder, macroalgae powder and macroalgae liquid; 3) fattening of the sandy bottom; 4) gridworm breeding: put gridworm in The growing sand bed of the breeding device, and the breeding feed is put on the surface of the growing sand bed for feeding; 5) Aquaculture water management. By increasing the oxygenation efficiency in the substrate to achieve sufficient supply of dissolved oxygen content in interstitial water, and then adding high-density live and fresh microalgae bait, to solve the problem of insufficient dissolved oxygen in sufficient amount of ecological benthic living microalgae and interstitial water, Realize the high-density cultivation of the square star worm.

Description

technical field [0001] The invention belongs to the technical field of marine organism cultivation, and in particular relates to a method for indoor high-density cultivation of the gridworm. Background technique [0002] The square star worm, commonly known as sand worm, is distributed in the coastal sandy tidal flats of the South China Sea and the East China Sea, as well as shallow seas in the sea. Sandworm has high nutritional value, delicious taste, and high therapeutic and medicinal value. It is known as "Marine Cordyceps" in coastal folks. The active substances extracted from its body have obvious effects in improving immunity and anti-fatigue. effect. Sandworms are easy to eat. Like sea cucumbers, they can be eaten fresh or processed into dry products for preservation and consumption. Therefore, the square star worm is a characteristic seafood species with edible and medicinal value. The domestic sandworm industry already has a complete industrial chain, with seed p...

AI Technical Summary

Problems solved by technology

With the increase of people's demand for sandworm products and the decrease of natural resources year by year, the production of sandworms only relying on tidal flat farming is not enough to support the consumer market, especially the demand for intensively processed sandworm products. At present, the square starworm Mainly tidal flat farming, however, the suitable tidal flat area is limited, which limits the production scale of the gridworm

[0003] At present, the main technical bottlenecks and reasons for restricting the high-density cultivation (ponds, industrialization) of the gridworm are that the ecological bait suitable for the gridworm feeding and sufficient dissolved oxygen supply have not been solved.

First, as the breeding time increases, the organic matter migrated by sandworms to the sand layer will easily form highly reducing substances. The accumulation of sulfide and ammonia nitrogen will inhibit the growth of organisms, and in severe cases, it will cause the death of sandworms

Second, in the natural environment, the gridworm can only feed on the microalgae and other particulate matter in the surface layer of the substrate, while the natural benthic diatoms (microalgae) and other settled organic particles can only satisfy a small amount of food intake of the gridworm and growth, while the organic matter content of the artificial compound feed is too high, it is easy to cause local hypoxia and deterioration after being transferred to the substrate, which is not conducive to the growth of breeding, and the composition of the artificial compound bait is complex, which is not suitable for the lack of specialized digestive glands of the gridworm. The impact of substrate deterioration brought about by animals' feeding and utilization is more obvious, and the accumulation of nutrients in the body of the gridworm mainly comes from tidal flat microalgae and organic matter on the bottom of the tidal flat; the third is that the traditional mining capacity is limited, and the new high-pressure Washing the bottom of the tidal flat with a water gun can increase the harvesting efficiency by 5 to 10 times, but it has a certain negative impact on the tidal flat environment and biodiversity

[0007] A kind of bait for industrialized cultivation of the square starworm and its production method (CN103844006A) is made by mixing plant algae powder, fish meal, shell powder, soil, etc. The bait has a high content of organic matter, which is easy to cause substrate deterioration

[0008] A method for mixed breeding of square starworm and square spot snail (CN105557577A) adopts soybean meal, peanut meal, sargassum powder, shrimp shell powder, squid powder, etc. as feeding bait, which is easy to cause deterioration effect on the substrate

[0009] A method for cultivating sandworms in ponds (CN107466926A) uses natural sedimentation particulate matter in ponds, belongs to extensive cultivation, and does not involve bait preparation and feeding

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