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Method for increasing PUFA (polyunsaturated fatty acid) relative content of soft parts of ruditapes philippinarum

A Philippine clam, relative content technology, applied in the fields of application, climate change adaptation, fish farming, etc., can solve the problems of high cost and inconspicuous nutrition enhancement effect, achieve cost control, increase edible value and nutritional value, and operate easy effect

Active Publication Date: 2021-09-07
DALIAN OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PUFA content in clams is affected by factors such as food and seasons. Although it is possible to increase the PUFA content of clams by feeding PUFA-rich algae, the cost of this method is high and the nutritional fortification effect is not obvious.

Method used

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  • Method for increasing PUFA (polyunsaturated fatty acid) relative content of soft parts of ruditapes philippinarum
  • Method for increasing PUFA (polyunsaturated fatty acid) relative content of soft parts of ruditapes philippinarum

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specific Embodiment

[0020] Philippine clams were collected in Erjiegou, Panjin City, Liaoning Province as group 1, and Philippine clams were collected in Jinzhou District, Dalian City, Liaoning Province as group 2. The basic information of group 1 and group 2 is as follows:

[0021]

[0022] Group 1 and Group 2 were placed in the Liaoning Province Shellfish Breeding Center of Dalian Ocean University for temporary breeding. During the breeding period, the water is changed once a day, the bait is fed once a day, and oxygenation is continued. The breeding capacity is 20-30kg / m 3 , the holding time is 7d.

[0023] Group 1 and group 2 after temporary raising treatment are respectively divided into comparative examples and experimental examples, and the clams of experimental examples are put into temperature-controllable water circulation tanks, and the clams are subjected to gradual low-temperature treatment to temporarily raise the water temperature (12 ±1°C) as the initial temperature, reduce th...

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Abstract

The invention discloses a method for increasing PUFA (polyunsaturated fatty acid) relative content of soft parts of ruditapes philippinarum. The method comprises the following steps: collecting ruditapes philippinarum with undamaged body surfaces and shell length of 2.5-4.5 cm, transferring the ruditapes philippinarum into a room for room-temperature temporary rearing in temporary rearing seawater with salinity being 26-32 and pH value being 7.8-8.3, changing the total amount of water once every day in the temporary rearing period, feeding twice every day, performing continuous oxygenating, setting the culture capacity to be 20-30 kg / m<3>, after one week of temporary rearing, putting the ruditapes philippinarum into a temperature-controllable water circulation tank, carrying out gradient low-temperature treatment on the ruditapes philippinarum, reducing the culture temperature at the speed of 2-3 DEG C / d by taking the seawater temperature at room temperature as the initial temperature, when the water body temperature is 4 DEG C or above, feeding the ruditapes philippinarum with unicellular algae or chlorella algae paste every day with the feeding amount of 80-120 g / m<3>, and meanwhile, changing the total amount of water once every day; when the temperature of the water body is reduced to 4 DEG C or below, stopping feeding, meanwhile, performing continuous oxygenating, picking out dead individuals in time, changing water once every 3-5 days, when the temperature of the water body is reduced to 0 DEG C, stopping cooling, maintaining the temperature of 0 DEG C for one week or more, and changing water once a week.

Description

technical field [0001] The invention relates to a method for cultivating seafood, in particular to a method for increasing the relative content of PUFA in the mollusk of the philippine clam. Background technique [0002] The annual output of clams in my country is about 4 million tons, among which the output of Philippine clams exceeds 3 million tons, which is the cultured shellfish with the highest yield of a single species in my country. The content of polyunsaturated fatty acids (PUFA) is an important standard to measure the nutritional value of marine aquatic animals, and the soft parts of Philippine clams are rich in PUFA. PUFA plays an important role in the promotion of nerve and reproductive development, as well as the prevention and treatment of cardiovascular and cerebrovascular diseases, inflammation and metabolic disorders in the human body. Moreover, PUFA also has important functions in cell membrane biology, such as maintaining the fluidity of cell membranes. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 聂鸿涛李宁闫喜武
Owner DALIAN OCEAN UNIV
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