PHA-enriched bait for sea cucumber

Abstract

The invention relates to the technical field of aquaculture feed, in particular to PHA-enriched bait for sea cucumber. Sea cucumber can be fed with the bait which is a compound of sea mud and large seaweed powder, so that a large amount of mud is formed at the bottom of a breeding pond, and normal growth of sea cucumber is affected seriously. In order to solve the problem, the invention provides the PHA-enriched bait for sea cucumber, the bait includes the following ingredients: PHA, seaweed, scallop skirts, dried malus micromalus, dry powder of lactic acid bacteria and dry powder of Rhodotorula benthica. The bait for sea cucumber is prepared from the biodegradable material PHA instead of a sea mud component in traditional sea cucumber bait, has a tight structure and no easy loosening, thesea cucumber bait which is not swallowed by sea cucumber is deposited on the bottom of a farm after being put into the farm, and the PHA in the sea cucumber bait at the bottom of the farm can be biodegraded and transformed into CO2 and water, so that the problem that the bottom of the breeding pond needs regular cleaning in the sea cucumber artificial breeding industry is solved, manpower and material resources are saved, and a good application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture feed, in particular to a PHA-rich sea cucumber bait. Background technique [0002] Sea cucumbers, also called sea cucumbers, belong to the class of echinoderms, Holothuria, and are distributed in all oceans around the world. They are marine molluscs with a long history. The nutritional value of sea cucumber is very high. Studies have shown that the protein in its dry body wall is as high as 70%, polysaccharides are about 6%, lipids only account for 4%, and 90% of lipids are phospholipids, and cholesterol accounts for less than 1%. , Among the inorganic components, sea cucumber contains trace elements such as calcium, magnesium, iron and selenium, and is known as the first of the "Eight Treasures of Seafood". The rich nutritional value makes sea cucumber a tonic and health food. [0003] It is precisely based on the extremely high nutritional value of sea cucumbers that people's demand for sea...

AI Technical Summary

Problems solved by technology

[0004] At present, sea cucumber farmers or breeding enterprises mainly use the compound of sea mud and large seaweed powder as bait to feed sea cucumbers (Zhong Ming, Hu Chaoqun. Advances in research on sea cucumber breeding feed [J]. Feed Industry, 2016, 37(18) :58-64.), the content of sea mud in the bait is as high as 22-28%. For example, the Chinese invention patent CN103211088A discloses a kind of sea cucumber bait, its composition is: yeast 12%-18%, sea floating mud 22%-28% 12%-18% of eel algae powder, 2%-6% of lactic acid bacteria, 2%-6% of yeast, 2%-6% of photosynthetic bacteria, 2%-6% of bacillus, and the balance is purified Seawater, if the sea cucumber cannot be eaten at one time after the bait of this patent is put in, it will accumulate over time, which will cause a large amount of sludge to form at the bottom of the breeding pond

A large amount of sludge accumulated at the bottom of the breeding pond is very easy to breed a large number of Vibrio splendidus or pseudoalteromonas, which can easily cause the occurrence of sea cucumber rotting disease, and even cause a large number of sea cucumbers to die; in addition, the large amount of sludge accumulated at the bottom of the breeding pond It contains a lot of bait residues that have not been swallowed by sea cucumbers. After soaking for a long time, it is easy to form granular loose matter, which floats in the seawater without direction, seriously affecting the light transmittance of seawater in the culture pond, and it is very easy to cause sea cucumbers. , affect the normal growth of sea cucumber

Therefore, sea cucumber circles or sea cucumber cofferdams must be cleaned regularly. However, regular bottom cleaning of sea cucumber circles or sea cucumber cofferdams is a very time-consuming and labor-intensive task. Sea cucumber bait is a thing worth studying