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Method for increasing intramuscular lipid content of reared fish and feed used for the method

A technology for raising fish and feed, applied in fish farming, animal feed, applications, etc., can solve the problems of reducing the fat content of fish, and achieve the effect of increasing lipid content, good taste and taste

Inactive Publication Date: 2018-01-30
TOKYO UNIV OF MANNE SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the above method reduces the fat content of fish, it is different from the "fat" state of wild fish, and it does not necessarily meet the requirements from the viewpoint of providing farmed fish with a taste like wild fish.

Method used

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  • Method for increasing intramuscular lipid content of reared fish and feed used for the method
  • Method for increasing intramuscular lipid content of reared fish and feed used for the method
  • Method for increasing intramuscular lipid content of reared fish and feed used for the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Based on the amino acid requirement (Table 1) of rainbow trout, a control feed and a test feed were produced as shown in Table 2.

[0044] Table 1

[0045]

[0046]

[0047] Table 2

[0048]

[0049] Feed composition for rainbow trout

[0050]

[0051] The amino acid composition of the feed was measured using an amino acid analyzer. As a result, the amino acid composition shown in Table 3 was obtained, and when the respective adequacy ratios were calculated, as shown in Table 4, only Lys was largely deficient.

[0052] table 3

[0053]

[0054]

[0055] Table 4

[0056]

[0057]

[0058] The above-mentioned feed was given to rainbow trout (body length is about 23cm, body weight is about 200g) for 2 and 7 days, the results are shown in Table 5, between the control group and the test group, no significant difference was observed in body length and body weight .

[0059] table 5

[0060]

[0061]

[0062] The whole lipid of the muscle was ext...

Embodiment 2

[0067] Based on the amino acid requirements (Table 7) of carp closely related to zebrafish, a control feed and a test feed were prepared as shown in Table 8.

[0068] Table 7

[0069]

[0070]

[0071] Table 8

[0072]

[0073] composition of feed

[0074]

[0075] The amino acid composition of the feed was measured using an amino acid analyzer. As a result, the amino acid composition shown in Table 9 was obtained. When the respective adequacy ratios were calculated, only Lys was largely deficient as shown in Table 10.

[0076] Table 9

[0077]

[0078] Amino Acid Composition of Feed

[0079]

[0080] Table 10

[0081]

[0082]

[0083] The above-mentioned feed was administered to zebrafish (about 0.3 g body weight) at an amount of 10 mg per day for 3 and 6 days (n=5). As shown in Table 11, no significant difference was observed in the body weight of the fish between the control group and the test group.

[0084] Table 11

[0085]

[0086] fish weigh...

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Abstract

An object of the present invention is to provide a farmed fish or caught wild fish of a "fatty" state having satisfactory taste and texture by increasing the intramuscular lipid content of the farmed fish or caught wild fish for shipping the fish, and to provide a fish-rearing feed therefor. The object of the present invention is attained by providing farmed fish of a "fatty" state increased in intramuscular lipid content thereof by: preparing a fish-rearing feed for increasing the intramuscular lipid content of the fish, by satisfying the requirement of the amino acid necessary for fish growth with respect to the essential amino acids except lysine in a fish-rearing feed containing the essential amino acid requirements (necessary for fish growth) and adjusting the content of lysine (of the essential amino acids) in the feed to be equal to or less than the amino acid requirement (necessary for growth); and rearing fish while giving the fish-rearing feed during a period of 2 to 7 days before shipment within the rearing period (before shipment) for the farmed fish.

Description

technical field [0001] The present invention relates to a method for increasing the intramuscular lipid content of farmed fish or caught wild fish by raising the fish when the fish is marketed, and a fish breeding feed used for the method. Background technique [0002] In recent years, fish farming has become popular in Japan, and a lot of researches on its feed have been carried out. When formulating the feed for fish culture, among various feed ingredients, the supply of the essential amino acid of fish becomes important. Since essential amino acids cannot be supplied through biosynthesis in fish, it is necessary to supply essential amino acids from the outside in the form of feed during the growth of fish. Examples of essential amino acids for fish include threonine (Thr), valine (Val), cysteine ​​(Cys), methionine (Met), isoleucine (Ile), and leucine Acid (Leu), Tyrosine (Tyr), Phenylalanine (Phe), Lysine (Lys), Histidine (His), Arginine (Arg). [0003] The essential ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A23K50/80A23K20/142
CPCA23K50/80A23K20/142Y02A40/818
Inventor 大场萌未吉永叶月潮秀树金子元高桥伸一郎佐藤秀一
Owner TOKYO UNIV OF MANNE SCI & TECH
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