JP2018126066A - Fat composition for bait organism, method for manufacturing fat composition for bait organism, and method for manufacturing bait organism - Google Patents

Fat composition for bait organism, method for manufacturing fat composition for bait organism, and method for manufacturing bait organism Download PDF

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JP2018126066A
JP2018126066A JP2017019358A JP2017019358A JP2018126066A JP 2018126066 A JP2018126066 A JP 2018126066A JP 2017019358 A JP2017019358 A JP 2017019358A JP 2017019358 A JP2017019358 A JP 2017019358A JP 2018126066 A JP2018126066 A JP 2018126066A
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feed
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mass
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JP6342531B1 (en
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直宏 唐谷
Naohiro Karatani
直宏 唐谷
松井 正行
Masayuki Matsui
正行 松井
太 横溝
Futoshi Yokomizo
太 横溝
稔 木原
Minoru Kihara
稔 木原
村上 学
Manabu Murakami
学 村上
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Tokai University
Fuji Oil Co Ltd
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Fuji Oil Co Ltd
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/158Fatty acids; Fats; Products containing oils or fats
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/163Sugars; Polysaccharides
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K50/00Feeding-stuffs specially adapted for particular animals
    • A23K50/80Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs

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  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
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  • Food Science & Technology (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a fat composition for a bait organism containing novel mannobiose.SOLUTION: A fat composition for a bait organism in which an aqueous phase containing mannobiose dissolve therein is dispersed in an oil phase, wherein a mass ratio of the aqueous phase to the oil phase is the aqueous phase:the oil phase=1 to 20 mass%:99 to 80 mass%, 3 to 50 mass% of the mannobiose is dissolve in the aqueous phase, and 1 to 5 mass% of an oil-soluble emulsifier is contained in the oil phase.SELECTED DRAWING: None

Description

本発明は、餌用生物用油脂組成物、餌用生物用油脂組成物の製造方法及び餌用生物の製造方法に関する。   The present invention relates to a biological oil composition for feed, a method for producing a biological oil composition for food, and a method for producing a biological composition for food.

クロソイ、ヒラメ等の養殖では、孵化直後の仔魚や稚魚に、ワムシ(Rotifera)、アルテミア(Artemia)等の生物餌料を与えることが一般的に行われている。ワムシは、輪形動物門の水中の微小動物であり、体長は100〜500μm程度である。アルテミアは、小型の甲殻類であり、ホウネンエビによく似た姿をしており、体長約1cm程度である。ワムシ、アルテミア等を、魚の生物餌料に使用する技術が公開されている(特許文献1〜6)。   In the cultivation of black soy, flounder, etc., it is common practice to provide larvae and fry immediately after hatching with biological foods such as rotifera and artemia. A rotifer is an underwater microanimal of the annelid, and has a body length of about 100 to 500 μm. Artemia is a small crustacean that looks very similar to the shrimp shrimp and is about 1 cm long. Techniques for using rotifers, artemia, etc., for fish feed are disclosed (Patent Documents 1 to 6).

一方、本出願人は、これまでマンノビオースを含む飼料を開発している(特許文献7〜9)。マンノビオースを飼料に添加することにより、サルモネラ菌の動物腸内での定着を抑制し、体外へ排泄する排菌効果(サルモネラ菌定着抑制効果)が知られている。   On the other hand, the present applicant has developed a feed containing mannobiose (Patent Documents 7 to 9). It is known that mannobiose is added to the feed to suppress colonization of Salmonella in the animal intestine and excrete it outside the body (Salmonella colonization suppression effect).

特開昭58-47444JP 58-47444 特開昭58-47445JP 58-47445 A 特開昭60-58043JP-A-60-58043 特開平1-262758JP 1-262758 特開平10-56977JP 10-56977 特開平10-327770JP 10-327770 A 特開2015-47158JP2015-47158 特開2014-143924JP2014-143924 特開2010-183909JP2010-183909

本発明は、新規なマンノビオースを含む餌用生物用油脂組成物を提供することを目的とする。   An object of the present invention is to provide a biological oil composition for feed containing a novel mannobiose.

本発明は、新規な餌用生物用油脂組成物の製造方法を提供することを目的とする。   An object of this invention is to provide the manufacturing method of the novel fat oil composition for feed.

本発明は、その新規な餌用生物用油脂組成物を用いて、餌用生物の製造方法を提供することを目的とする。   An object of the present invention is to provide a method for producing a bait organism using the novel bait oil composition.

本発明者は、マンノビオースが、クロソイ、ヒラメ等の稚魚(仔魚)の成長、生残及び活力に及ぼす影響を研究した。   The present inventor studied the effect of mannobiose on the growth, survival and vitality of juveniles (larvae) such as black soy and flounder.

それら稚魚に対しては、通常、ワムシ、アルテミア等の生物餌料が与えられる。その生物餌料の条件は、稚魚の口に入る大きさであること、稚魚の摂餌生態に合致していること、稚魚が消化吸収できること、生物餌料を大量培養できること等である。また、稚魚が栄養不足により斃死することや、奇形魚が発生することを防ぐためにも、稚魚には成長に必要な栄養(EPA、DHA、タウリン等)を十分に与えることが必要である。   Such fry are usually given biological feed such as rotifer and artemia. The condition of the biological feed is that it is large enough to enter the mouth of the fry, that it matches the feeding ecology of the fry, that the fry can be digested and absorbed, and that the biological feed can be cultured in large quantities. Also, in order to prevent the larvae from drowning due to lack of nutrition and the occurrence of malformed fish, it is necessary to give the larvae sufficient nutrients (EPA, DHA, taurine, etc.) necessary for growth.

また、マンノビオースは、マンノースが2つ結合した糖水溶性物質であり、飼料添加剤として使用されている。マンノビオースは、家畜腸管内においてサルモネラ菌の定着防止効果、体外排出効果(免疫賦活作用)、ミネラルの吸収促進効果(生理作用)等を発現する。   Mannobiose is a sugar-soluble substance in which two mannoses are combined, and is used as a feed additive. Mannobiose exhibits the effect of preventing Salmonella colonization, the effect of extracorporeal discharge (immunostimulatory action), the effect of promoting mineral absorption (physiological action), etc. in the intestinal tract of livestock.

本発明者は、次のマンノビオースを含む餌用生物用油脂組成物や、その餌用生物用油脂組成物を給餌することで得られる餌用生物が、クロソイ、ヒラメ等の稚魚の成長、生残及び活力に、良い影響を及ぼすことを発見した。   The inventor of the present invention uses the following biological fats and oils composition containing mannobiose, and the biological foods obtained by feeding the biological biological fat composition for feeding, so that the growth and survival of juveniles such as black soy and flounder And found to have a positive effect on vitality.

項1.
マンノビオースが溶解した水相が油相に分散された、餌用生物用油脂組成物。
Item 1.
A biological fat composition for feed, wherein an aqueous phase in which mannobiose is dissolved is dispersed in an oil phase.

項2.
前記水相は、マンノビオースが3〜50質量%溶解した水相である、前記項1に記載の餌用生物用油脂組成物。
Item 2.
Item 2. The biological fat and oil composition for food according to Item 1, wherein the aqueous phase is an aqueous phase in which 3 to 50 mass% of mannobiose is dissolved.

項3.
前記餌用生物用油脂組成物は、水相と油相との総量を基準に、水相1〜20質量%が油相に分散された餌用生物用油脂組成物である、前記項1又は2に記載の餌用生物用油脂組成物。
Item 3.
Item 1 or 2 above, wherein the biological fat composition for food is a biological biological fat composition for food in which 1 to 20% by mass of an aqueous phase is dispersed in the oil phase based on the total amount of the aqueous phase and the oil phase. 2. The biological fat composition for food according to 2.

項4.
前記油相は、油溶性乳化剤を含む油相である、前記項1〜3のいずれかに記載の餌用生物用油脂組成物。
Item 4.
Item 4. The biological fat composition for food according to any one of Items 1 to 3, wherein the oil phase is an oil phase containing an oil-soluble emulsifier.

項5.
前記油溶性乳化剤は、ポリグリセリン脂肪酸エステルである、前記項1〜4のいずれかに記載の餌用生物用油脂組成物。
Item 5.
Item 5. The fat and oil composition for food according to any one of Items 1 to 4, wherein the oil-soluble emulsifier is a polyglycerol fatty acid ester.

項6.
前記油相は、ドコサヘキサエン酸(DHA)及びエイコサペンタエン酸(EPA)から選ばれる1以上を構成脂肪酸とする食用油を含む、請求項1〜5のいずれかに記載の餌用生物用油脂組成物。
Item 6.
The said oil phase contains the edible oil which uses as a constituent fatty acid 1 or more chosen from docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), The biological fats and oils composition for feed in any one of Claims 1-5 .

項7.
マンノビオースが溶解した水相が油相に分散された、餌用生物用油脂組成物であって、
水相と油相との質量比は、水相:油相=1〜20質量%:99〜80質量%であり、
水相は、マンノビオースが3〜50質量%溶解しており、
油相は、油溶性乳化剤を1〜5質量%含む、
餌用生物用油脂組成物。
Item 7.
A biological fat composition for feed, in which an aqueous phase in which mannobiose is dissolved is dispersed in an oil phase,
The mass ratio of the water phase and the oil phase is: water phase: oil phase = 1-20% by mass: 99-80% by mass,
In the aqueous phase, 3-50% by mass of mannobiose is dissolved,
The oil phase contains 1 to 5% by mass of an oil-soluble emulsifier,
A biological fat composition for feed.

項8.
前記項1〜7のいずれかに記載の餌用生物用油脂組成物の製造方法であって、
マンノビオースが溶解した水相を、油相に分散させる工程を含む、
餌用生物用油脂組成物の製造方法。
Item 8.
It is a manufacturing method of the biological fats and oils composition for feed in any one of said items 1-7,
Including a step of dispersing an aqueous phase in which mannobiose is dissolved in an oil phase,
A method for producing a biological fat composition for feed.

項9.
餌用生物の製造方法であって、
餌用生物に、前記項1〜7のいずれかに記載の餌用生物用油脂組成物を給餌する工程を含む、
餌用生物の製造方法。
Item 9.
A method for producing a bait organism,
Feeding the biological organism for food with the fat composition for biological organisms according to any one of Items 1 to 7,
A method for producing a bait organism.

項10.
前記餌用生物は、ワムシ(Rotifera)及びアルテミア(Artemia)からなる群から選ばれる少なくとも1種の生物である、前記項8記載の餌用生物の製造方法。
Item 10.
9. The method for producing a bait organism according to Item 8, wherein the bait organism is at least one organism selected from the group consisting of Rotifera and Artemia.

本発明のマンノビオースを含む餌用生物用油脂組成物は、乳化飼料として、餌用生物に給餌し、次いでこの餌用生物をクロソイ、ヒラメ等の稚魚に与えることで、それら稚魚の成長、生残及び活力に、良い影響を及ぼすことが可能となる。   The biological fat composition for food containing mannobiose according to the present invention is fed to a living organism as an emulsified feed, and then fed to the young fish such as black soybean, flounder, etc. And it is possible to have a positive effect on vitality.

本発明の餌用生物用油脂組成物やこの餌用生物用油脂組成物を給餌して得られる餌用生物は、クロソイ、ヒラメ等の稚魚の魚病に対しても有効に働くことが可能となる。   The bait biological fat composition of the present invention and the bait biological organism obtained by feeding the bait biological fat composition can work effectively against fish diseases of juvenile fish such as black soy and flounder. Become.

本発明の餌用生物用油脂組成物や餌用生物を使用することで、クロソイ、ヒラメ等の稚魚の養殖で、抗生物質の使用を抑えることが可能となる。   By using the feed biological fat and oil composition or the feed organism of the present invention, it becomes possible to suppress the use of antibiotics in the cultivation of juvenile fish such as black soy and flounder.

本発明の餌用生物用油脂組成物や餌用生物は、栄養強化剤としてマンノビオースを含み、魚類(稚魚)に対して、外部形態や生化学的面で有効である。   The fat composition for feed biological use and the feed organism of the present invention contain mannobiose as a nutrient enhancer, and are effective for fish (fry) in terms of external form and biochemistry.

本発明は、新規なマンノビオースを含む餌用生物用油脂組成物を提供することができ、この新規な餌用生物用油脂組成物を用いて、餌用生物の製造することができる。   INDUSTRIAL APPLICABILITY The present invention can provide a feed biological fat and oil composition containing a novel mannobiose, and a feed biological organism can be produced using the novel feed biological fat and oil composition.

本発明のマンノビオースを含む餌用生物用油脂組成物や、その餌用生物用油脂組成物を給餌することで得られる餌用生物は、クロソイ、ヒラメ等の稚魚の成長、生残及び活力に、良い影響を及ぼす。本発明は、クロソイ、ヒラメ等の稚魚を養殖する際に、養殖稚魚が捕食する餌用生物の飼料等として、各種の栄養成分がバランス良く含有された飼料となる。   Biological oil and fat composition for feed containing the mannobiose of the present invention, and a prey organism obtained by feeding the biological oil and fat composition for food, the growth, survival and vitality of juvenile fish such as black soy and flounder, Has a positive effect. The present invention provides a feed containing various nutritional components in a well-balanced manner as a feed for feed organisms that are fed by cultured larvae when cultivating larvae such as black soy and flounder.

本発明に係る餌用生物を与えたヒラメの無給餌飼育試験の結果を表す図である。It is a figure showing the result of the non-feeding breeding | raising test of the flounder which gave the food for feed which concerns on this invention. 本発明に係る餌用生物を与えたクロソイの無給餌飼育試験の結果を表す図である。It is a figure showing the result of the non-feeding breeding test of the black soy which gave the bait organism which concerns on this invention. 本発明に係る餌用生物を与えたヒラメの高温負荷試験の結果を表す図である。It is a figure showing the result of the high temperature load test of the flounder which gave the food for feed which concerns on this invention. 本発明に係る餌用生物を与えたヒラメの低塩分負荷試験を表す図である。It is a figure showing the low salt load test of the flounder which gave the food for feed which concerns on this invention. 本発明に係るヒラメ稚魚の核酸を分析した結果を表す図である。It is a figure showing the result of having analyzed the nucleic acid of the flounder fry concerning the present invention.

本発明は、餌用生物用油脂組成物、餌用生物用油脂組成物の製造方法及び餌用生物の製造方法に関する。   The present invention relates to a biological oil composition for feed, a method for producing a biological oil composition for food, and a method for producing a biological composition for food.

(1)餌用生物用油脂組成物
本発明の餌用生物用油脂組成物は、マンノビオースが溶解した水相が油相に分散されていることを特徴とする。
(1) Biological oil and fat composition for feed The biological fat and oil composition for feed of the present invention is characterized in that a water phase in which mannobiose is dissolved is dispersed in an oil phase.

前記水相は、マンノビオースが3〜50質量%溶解した水相であることが好ましい。   The aqueous phase is preferably an aqueous phase in which 3 to 50% by mass of mannobiose is dissolved.

前記餌用生物用油脂組成物は、水相と油相との総量を基準に、水相1〜20質量%が油相に分散されていることが好ましい。   It is preferable that 1 to 20% by mass of the aqueous phase is dispersed in the oil phase based on the total amount of the aqueous phase and the oil phase.

前記油相は、油溶性乳化剤を含む油相であることが好ましい。   The oil phase is preferably an oil phase containing an oil-soluble emulsifier.

前記油溶性乳化剤は、ポリグリセリン脂肪酸エステルであることが好ましい。   The oil-soluble emulsifier is preferably a polyglycerol fatty acid ester.

前記油相は、ドコサヘキサエン酸(DHA)及びエイコサペンタエン酸(EPA)から選ばれる1以上を構成脂肪酸とする食用油を含むことが好ましい。   The oil phase preferably contains an edible oil having at least one constituent fatty acid selected from docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA).

本発明の餌用生物用油脂組成物は、
マンノビオースが溶解した水相が油相に分散されており、
水相と油相との質量比は、水相:油相=1〜20質量%:99〜80質量%であり、
水相は、マンノビオースが3〜50質量%溶解しており、
油相は、油溶性乳化剤を1〜5質量%含むことが好ましい。
The biological fat and oil composition for bait of the present invention,
The water phase in which mannobiose is dissolved is dispersed in the oil phase,
The mass ratio of the water phase and the oil phase is: water phase: oil phase = 1-20% by mass: 99-80% by mass,
In the aqueous phase, 3-50% by mass of mannobiose is dissolved,
The oil phase preferably contains 1 to 5% by mass of an oil-soluble emulsifier.

本発明は、好ましい態様として、その水相はマンノビオースを含有し、その油相は魚油、DHA、EPA等を含有するので、稚魚の餌用ワムシ類(餌用生物)等に与えるに際して、各種の栄養成分がバランス良く強化された飼料となる。この飼料は、それら餌用生物によって摂取され、その結果、それを捕食するクロソイ、ヒラメ等の稚魚を死滅させることなく健全に生長させることが可能となる。   In the present invention, as a preferred embodiment, the water phase contains mannobiose and the oil phase contains fish oil, DHA, EPA, etc. The feed is enriched with nutrients in a well-balanced manner. This feed is ingested by these feed organisms, and as a result, it is possible to grow healthy without killing blackfish, flounder and other fry that prey on it.

以下、本発明の餌用生物用油脂組成物の構成要素について詳細に説明する。   Hereinafter, the components of the biological fat composition for food of the present invention will be described in detail.

(1-1)水相
水相はマンノビオースが溶解した水相である。
(1-1) Aqueous phase The aqueous phase is an aqueous phase in which mannobiose is dissolved.

マンノビオース
マンノビオースは、β-1,4-マンノビオースであり、マンノース2分子がβ-1,4-グリコシド結合してなるものである。マンノビオースは、例えば、マンノースから合成する方法や、β-1,4-マンナンを分解する方法により得ることができる。
Mannobiose mannobiose are beta-1,4 mannobiose, in which mannose two molecules formed by beta-1,4 glycosidic bonds. Mannobiose can be obtained, for example, by a method of synthesizing from mannose or a method of decomposing β-1,4-mannan.

マンノビオースを餌用生物用油脂組成物(餌用生物)に添加することにより、サルモネラ菌の動物腸内での定着を抑制し、体外へ排泄する排菌効果(サルモネラ菌定着抑制効果)を得ることができる。   Mannobiose can be added to a biological fat composition for food (food for feed) to suppress Salmonella colonization in the animal intestine and excrete it outside the body (Salmonella colonization suppression effect). .

マンノビオースは、水相に3〜50質量%程度溶解していることが好ましい。マンノビオースが水相に溶解する量の上限は50wt%程度である。水相中のマンノビオースの含有量は、5〜45質量%程度がより好ましく、10〜40質量%程度が更に好ましい。水相中のマンノビオースの含有量は、22質量%程度が特に好ましい。   Mannobiose is preferably dissolved in the aqueous phase by about 3 to 50% by mass. The upper limit of the amount of mannobiose dissolved in the aqueous phase is about 50 wt%. The content of mannobiose in the aqueous phase is more preferably about 5 to 45% by mass, and further preferably about 10 to 40% by mass. The content of mannobiose in the aqueous phase is particularly preferably about 22% by mass.

本発明の餌用生物用油脂組成物は、マンノビオース(水溶性栄養成分)が溶解した水相が油相に分散されている。言い換えると、油相中に、マンノビオースが溶解した水相が分散されて存在している。本発明の餌用生物用油脂組成物では、マンノビオースが水相として油中分散されていることにより、マンノビオースを多量に存在させることを可能となる。   In the biological fat and oil composition for feed according to the present invention, an aqueous phase in which mannobiose (water-soluble nutrient component) is dissolved is dispersed in the oil phase. In other words, an aqueous phase in which mannobiose is dissolved is dispersed in the oil phase. In the biological fat and oil composition for feed according to the present invention, mannobiose is dispersed in oil as an aqueous phase, so that a large amount of mannobiose can be present.

(1-2)油相
油相
油相は、ドコサヘキサエン酸(DHA)、エイコサペンタエン酸(EPA)、これらの脂肪酸を構成成分として含む食用油(魚油)等を含有することが好ましい。クロソイ、ヒラメ等の稚魚の健全な発育のためには、各種の栄養成分がバランス良く摂取されることが重要であり、特に不飽和脂肪酸(DHA、EPA等)等を含むことが好ましい。このためには、クロソイ、ヒラメ等の稚魚の餌となるワムシ、アルテミア等に、これらの成分が含有されていることが好ましい。
(1-2) Oil phase
The oil phase oil phase preferably contains docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), edible oil (fish oil) containing these fatty acids as components. In order for the healthy growth of juveniles such as black soy and flounder, it is important that various nutritional components are taken in a well-balanced manner, and it is particularly preferable to contain unsaturated fatty acids (DHA, EPA, etc.). For this purpose, it is preferable that these components are contained in rotifers, artemia and the like that serve as food for fry such as black soy and flounder.

食用油として、DHA、EPA等を豊富に含むイワシ、サバ、アジ、ブリ、サンマ、マグロ、カツオなどの青み魚の魚油を使用することができる。また、DHAやEPAを含有する海洋性動物(アザラシ等)由来の油脂の他、微生物や藻類由来のDHA、EPA含有油等を使用することも可能である。   As edible oil, fish oil of blue fish such as sardines, mackerel, horse mackerel, yellowtail, saury, tuna and bonito, which are rich in DHA, EPA, etc., can be used. In addition to oils and fats derived from marine animals (such as seals) containing DHA and EPA, oils containing DHA and EPA derived from microorganisms and algae can be used.

油相は、特にDHA及びEPAから選ばれる1以上を構成脂肪酸とする食用油を含むことが好ましい。   The oil phase preferably contains an edible oil having one or more selected from DHA and EPA as a constituent fatty acid.

油溶性乳化剤
油相は、油溶性乳化剤を含む油相であることが好ましい。
The oil-soluble emulsifier oil phase is preferably an oil phase containing an oil-soluble emulsifier.

油相が油溶性乳化剤を含むことで、マンノビオースが溶解した水相が油相に分散される。   When the oil phase contains an oil-soluble emulsifier, the water phase in which mannobiose is dissolved is dispersed in the oil phase.

前記油溶性乳化剤は、ポリグリセリン脂肪酸エステル(PGPR)であることが好ましい。ポリグリセリン脂肪酸エステルは、乳化剤として機能する。   The oil-soluble emulsifier is preferably polyglycerin fatty acid ester (PGPR). The polyglycerin fatty acid ester functions as an emulsifier.

ポリグリセリン脂肪酸エステルは、グリセリンを重合したポリグリセリンと脂肪酸のエステル化生成物である。ポリグリセリン脂肪酸エステルは、植物油由来のグリセリンを脱水縮合によりポリグリセリンにした後、植物油由来の脂肪酸をエステル結合させて作製することができる。   The polyglycerol fatty acid ester is an esterification product of polyglycerol obtained by polymerizing glycerol and a fatty acid. The polyglycerin fatty acid ester can be produced by making vegetable oil-derived glycerin polyglycerin by dehydration condensation and then esterifying the fatty acid derived from vegetable oil.

ポリグリセリンの重合度、脂肪酸の種類、或いはエステル化率を変えることにより親、水性から親油性まで幅広い製品設計が可能である。ポリグリセリンの重合度は平均10個程度でありで、前後に分布する。また、脂肪酸のエステル化度(いくつの脂肪酸が結合しているか)も平均で、結合する場所(水酸基(OH)と結合)も任意である。   By changing the degree of polymerization of polyglycerin, the type of fatty acid, or the esterification rate, a wide range of product designs from parent, aqueous to lipophilic can be made. The degree of polymerization of polyglycerin is about 10 on average and is distributed back and forth. In addition, the degree of esterification of fatty acids (how many fatty acids are bonded) is an average, and the bonding position (bonded with a hydroxyl group (OH)) is also arbitrary.

ポリグリセリン脂肪酸エステルを構成する脂肪酸として、カプリル酸(C8)、ラウリン酸(C12)、ミリスチン酸(C14)、ステアリン酸(C18)、オレイン酸(C18、二重結合の数1)、ベヘニン酸(C22)等が好ましい。   The fatty acids that make up the polyglycerin fatty acid esters include caprylic acid (C8), lauric acid (C12), myristic acid (C14), stearic acid (C18), oleic acid (C18, number of double bonds 1), behenic acid ( C22) and the like are preferable.

例えば、阪本薬品工業製のポリグリセリン脂肪酸エステル「CRS-75」を使用することができる。縮合リシノール酸エステルであり、ポリグリセリンエステルである。   For example, polyglycerin fatty acid ester “CRS-75” manufactured by Sakamoto Pharmaceutical Co., Ltd. can be used. It is a condensed ricinoleic acid ester and a polyglycerin ester.

その他、テトラグリセリンステアレート、デカグリセリンラウレート、デカグリセリンステアレート、デカグリセリンオレート、ポリグリセリンポリリシノレート等を使用することができる。   In addition, tetraglycerin stearate, decaglycerin laurate, decaglycerin stearate, decaglycerin oleate, polyglycerin polyricinoleate and the like can be used.

油相は、油溶性乳化剤を1〜5質量%程度含むことが好ましい。1〜3質量%程度含むことがより好ましく、1〜2質量%程度含むことが更に好ましい。本発明の餌用生物用油脂組成物を調製する際に、W/O型エマルションを良好に形成することができる。   The oil phase preferably contains about 1 to 5% by mass of an oil-soluble emulsifier. More preferably, it is contained in an amount of about 1 to 3% by mass, and more preferably about 1 to 2% by mass. When preparing the biological oil composition for feed of the present invention, a W / O emulsion can be formed satisfactorily.

(1-3)水相と油相の関係
水相と油相との質量比
本発明の餌用生物用油脂組成物では、水相と油相との総量を基準に、水相1〜20質量%程度が油相に分散されていることが好ましく、水相1〜10質量%程度が油相に分散されていることがより好ましい。
(1-3) Relationship between water phase and oil phase
Mass ratio of aqueous phase and oil phase In the biological fat composition for feed according to the present invention, about 1 to 20% by mass of the aqueous phase is dispersed in the oil phase based on the total amount of the aqueous phase and the oil phase. It is more preferable that about 1 to 10% by mass of the aqueous phase is dispersed in the oil phase.

水相と油相との質量比は、水相:油相=1〜20質量%:99〜80質量%であることが好ましく、水相:油相=1〜10質量%:99〜90質量%であることがより好ましい。更に水相:油相=1〜6質量%:99〜94質量%であることが好ましく、特に水相:油相=1〜3質量%:99〜97質量%であることが好ましい。   The mass ratio of the water phase to the oil phase is preferably water phase: oil phase = 1-20 mass%: 99-80 mass%, and water phase: oil phase = 1-10 mass%: 99-90 mass. % Is more preferable. Furthermore, it is preferable that it is aqueous phase: oil phase = 1-6 mass%: 99-94 mass%, and it is especially preferable that it is aqueous phase: oil phase = 1-3 mass%: 99-97 mass%.

餌用生物用油脂組成物の乳化粒子径
本発明の餌用生物用油脂組成物は、マンノビオースが溶解した水相が油相に分散されていることから、その乳化粒子径は、餌用生物の口を通過することのできる程度の大きさであることが好ましい。餌用生物用油脂組成物の乳化粒子径は、1〜30μm程度が好ましく、5〜20μm程度がより好ましい。
Emulsifying bait organism fat composition for the particle size present invention prey organisms for fat composition for, since the aqueous phase mannobiose is dissolved is dispersed in the oil phase, the emulsion particle diameter, the bait organisms The size is preferably such that it can pass through the mouth. The emulsified particle size of the biological fat composition for feed is preferably about 1 to 30 μm, and more preferably about 5 to 20 μm.

餌用生物用油脂組成物の乳化粒子径を1〜30μm程度に調整することで、餌用生物がマンノビオース(栄養強化物)を含む餌用生物用油脂組成物を体内に取り込むことが容易となる。また餌用生物の摂取量も良好である。   By adjusting the emulsified particle size of the biological fat composition for feed to about 1 to 30 μm, it becomes easier for the biological organism to feed the biological composition for fat containing mannobiose (enriched nutrient) into the body. . Also, the intake of prey organisms is good.

(2)餌用生物用油脂組成物の製造方法
本発明の前記餌用生物用油脂組成物(前項(1))は、マンノビオースが溶解した水相を、油相に分散させる工程を含む方法で、製造することができる。
(2) Production method of biological fat composition for bait The aforementioned biological fat composition for bait of the present invention (previous item (1)) is a method comprising a step of dispersing an aqueous phase in which mannobiose is dissolved in an oil phase. Can be manufactured.

乳化工程
マンノビオース(水溶性栄養成分)をリン酸緩衝液等の緩衝液中に入れて水性溶液とする。マンノビオースは、水相に3〜50質量%程度溶解していることが好ましい。
Emulsification process Mannobiose (water-soluble nutrient component) is put into a buffer solution such as a phosphate buffer solution to make an aqueous solution. Mannobiose is preferably dissolved in the aqueous phase by about 3 to 50% by mass.

油相は、油溶性栄養成分(DHA、EPA、魚油等)を用いて調製する。   The oil phase is prepared using oil-soluble nutritional components (DHA, EPA, fish oil, etc.).

油相は、乳化効率を高めるため、ポリグリセリン脂肪酸エステル等の油溶性乳化剤(界面活性剤)を添加しておくこと(3〜20質量%程度)が好ましい。   The oil phase is preferably added with an oil-soluble emulsifier (surfactant) such as polyglycerin fatty acid ester (about 3 to 20% by mass) in order to increase the emulsification efficiency.

調製した油相(油性溶液)に水相(マンノビオースを含む水性溶液)を少しずつ注入しながらエマルション化機(ホモジナイザー)、超音波照射等により、激しく攪拌することによってW/O型エマルション(油中水型、water in oil型)を形成することができる。   W / O type emulsion (in oil) by stirring vigorously by emulsifying machine (homogenizer), ultrasonic irradiation etc. while injecting water phase (aqueous solution containing mannobiose) little by little into the prepared oil phase (oil-based solution) Water type, water in oil type) can be formed.

この水相と油相との質量比は、水相:油相=1〜20質量%:99〜80質量%であることが好ましい。   The mass ratio of the water phase to the oil phase is preferably water phase: oil phase = 1-20 mass%: 99-80 mass%.

本発明の餌用生物用油脂組成物は、良好なW/O型エマルションであり、常温で安定しており保存性にも優れている。本発明の前記餌用生物用油脂組成物は、クロソイ、ヒラメ等の稚魚の餌となるワムシ、アルテミア等の餌用生物の飼料として好適である。   The biological fat composition for feed of the present invention is a good W / O emulsion, is stable at room temperature, and has excellent storage stability. The fat composition for feed biological use according to the present invention is suitable as a feed for feed organisms such as rotifers and artemia, which are feeds for fry such as black soy and flounder.

(3)餌用生物用油脂組成物の乳化方法及び乳化物
本発明の餌用生物用油脂組成物は、W/O型エマルション(乳化物)である。
(3) Emulsifying method and emulsion of bait biological fat composition The bait biological fat composition of the present invention is a W / O emulsion (emulsion).

餌用生物に、本発明の餌用生物用油脂組成物を給餌する際には、水中で本発明の餌用生物用油脂組成物を良好に分散させることが好ましい。そこで、本発明の餌用生物用油脂組成物(W/O型乳化物)をワムシ等へ給餌する際には、これを更に乳化させることで、水中で良好に分散させることができる。これにより、ワムシ等は本発明の餌用生物用油脂組成物を十分に食することができる。   When feeding the feed biological oil composition of the present invention to a feed organism, it is preferable to disperse the feed biological fat composition of the present invention well in water. Therefore, when feeding the biological oil composition for food of the present invention (W / O type emulsion) to a rotifer or the like, it can be well dispersed in water by further emulsification. Thereby, a rotifer etc. can fully eat the biological oil composition for feed of this invention.

この本発明の餌用生物用油脂組成物(W/O型乳化物)を更に乳化させたものを「乳化飼料配合」と記す。実際には、ワムシ等には、この「乳化飼料配合」を与えることになる。   What further emulsified this biological fat composition for food of the present invention (W / O emulsion) is referred to as “emulsified feed formulation”. In practice, this “emulsified feed formulation” is given to rotifers and the like.

乳化飼料の調製方法の例示
(a)本発明の餌用生物用油脂組成物(W/O乳化物)
本発明の餌用生物用油脂組成物は、DHA/EPA濃縮魚油、マンノビオース水溶液、乳化剤等を含む。DHA/EPA濃縮魚油は、通常DHA及びEPAを夫々30質量%含有している油脂である。マンノビオース水溶液は、通常マンノビオースを22.5質量%含有している水溶液である。
Illustration of preparation method of emulsified feed
(A) Bio-oil composition for feed according to the present invention (W / O emulsion)
The biological fat composition for food of the present invention contains DHA / EPA concentrated fish oil, an aqueous mannobiose solution, an emulsifier and the like. DHA / EPA-concentrated fish oil is an oil that normally contains 30% by mass of DHA and EPA. Mannobiose aqueous solution is an aqueous solution containing 22.5% by mass of mannobiose.

予め油溶性乳化剤(阪本薬品工業製のCRS-75等)を溶解させたDHA/EPA濃縮魚油をホモミキサー(12,000 rpm程度)で攪拌する。そこへ少量ずつマンノビオース水溶液を添加して保持して(10分間程度)、W/O乳化物を作製することができる。   DHA / EPA concentrated fish oil in which oil-soluble emulsifier (CRS-75 manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) is dissolved in advance is stirred with a homomixer (about 12,000 rpm). A W / O emulsion can be prepared by adding a small amount of an aqueous mannobiose solution and holding the solution (about 10 minutes).

その配合は、例えば、DHA/EPA濃縮魚油:93質量%、マンノビオース水溶液:6質量%、乳化剤:1質量%含む。   The formulation contains, for example, DHA / EPA concentrated fish oil: 93% by mass, mannobiose aqueous solution: 6% by mass, and emulsifier: 1% by mass.

(b)乳化飼料配合(W/O/W乳化物)
乳化飼料配合は、前記本発明の餌用生物用油脂組成物、ゼラチン、アラビアゴム、水溶性乳化剤、油溶性乳化剤等を含む。
(B) Emulsified feed formulation (W / O / W emulsion)
The emulsified feed formulation includes the above-described biological fat and oil composition for feed of the present invention, gelatin, gum arabic, water-soluble emulsifier, oil-soluble emulsifier and the like.

<水相>蒸留水にゼラチン(新田ゼラチン製のニューシルバー顆粒)、アラビアゴム(キシダ化学製)、水溶性乳化剤(三菱化学フーズ製のリョートーシュガーエステルS-1670)を添加して、80℃で保持する。   <Aqueous phase> Gelatin (new silver granules made by Nitta Gelatin), gum arabic (made by Kishida Chemical), water-soluble emulsifier (Ryoto Sugar Ester S-1670 made by Mitsubishi Chemical Foods) is added to distilled water, and 80 Hold at ° C.

<油相>前記本発明の餌用生物用油脂組成物(W/O乳化物)に油溶性乳化剤(三菱化学フーズ製のリョートーシュガーエステルS-170)を溶解させて80℃に保持する。   <Oil phase> An oil-soluble emulsifier (Ryoto Sugar Ester S-170 manufactured by Mitsubishi Chemical Foods) is dissolved in the biological fat composition for food of the present invention (W / O emulsion) and maintained at 80 ° C.

80℃で保持した水相をホモミキサー(3,000 rpm程度)で攪拌している所へ、油相を少量ずつ添加して、保持して(5分間程度)乳化させてW/O/W乳化物を調製する。作製した乳化物を氷水にて急速冷却すると、このW/O/W乳化物をゲル状態として、乳化飼料を調製することが可能である。   Add the oil phase little by little to the place where the water phase kept at 80 ° C is stirred with a homomixer (about 3,000 rpm), hold (about 5 minutes) and emulsify to give a W / O / W emulsion. To prepare. When the prepared emulsion is rapidly cooled with ice water, an emulsified feed can be prepared with this W / O / W emulsion in a gel state.

乳化飼料配合(W/O/W乳化物)は、例えば、前記本発明の餌用生物用油脂組成物:20質量%、ゼラチン:5質量%、アラビアゴム:5質量%、水溶性乳化剤:1.5質量%、油溶性乳化剤:0.5質量%含む。   The emulsified feed formulation (W / O / W emulsion) is, for example, the above-mentioned biological biological fat composition for feed of the present invention: 20% by mass, gelatin: 5% by mass, gum arabic: 5% by mass, water-soluble emulsifier: 1.5 Contains 0.5% by mass of oil-soluble emulsifier.

このW/O/W型乳化飼料を作製する際、乳化飼料の一部をビーカー等の容器へ取り出し、40℃程度のぬるま湯で温調すると、ゼラチンが溶解して液状の乳化組成物となる。この液状の乳化組成物を、餌用生物を培養している水槽へ添加することでW/O油滴が水槽全体へ分散され、餌用生物へ給餌されることになる。   When preparing this W / O / W type emulsified feed, a part of the emulsified feed is taken out into a container such as a beaker and the temperature is adjusted with lukewarm water at about 40 ° C. to dissolve gelatin and form a liquid emulsion composition. By adding this liquid emulsified composition to the water tank in which the feed organism is cultured, the W / O oil droplets are dispersed throughout the water tank and fed to the feed organism.

(4)餌用生物の製造方法
本発明の餌用生物は、餌用生物に、本発明の前記餌用生物用油脂組成物(前項(1))を給餌する工程を含む方法で、製造することができる。
(4) Method for producing bait organism The bait organism of the present invention is produced by a method including the step of feeding the bait organism fat composition (previous item (1)) of the present invention to the bait organism. be able to.

この本発明の前記餌用生物用油脂組成物には、前記本発明の餌用生物用油脂組成物(W/O型乳化物)を更に乳化させたもの(乳化飼料配合)が含まれる。   The feed biological fat composition according to the present invention includes those obtained by further emulsifying the feed biological fat composition according to the present invention (W / O emulsion) (with emulsified feed).

本発明の餌用生物用油脂組成物(栄養強化物)は、例えば、シオミズツボワムシ等のワムシ(Rotifera)、アルテミア(Artemia)、ミジンコ、タマミジンコ、チグリオプス等の餌用生物の飼料として用いることができる。前記餌用生物は、ワムシ及びアルテミアからなる群から選ばれる少なくとも1種の生物であることが好ましい。ワムシ、アルテミア等の餌用生物は、クロソイ、ヒラメ等の稚魚の餌となる。   The feed fat and oil composition (nutrient enriched product) of the present invention is used as a feed for feed organisms such as rotifera, artemia, daphnids, thrombus, tigriops, etc. Can do. The bait organism is preferably at least one organism selected from the group consisting of rotifers and artemia. Feeding organisms such as rotifers and artemia feed on fry such as black soi and flounder.

ワムシは,輪形動物門単生殖巣綱に属する生物の総称で,その種類は約2000種が知られている。その中で海産魚の種苗生産の初期餌料として不可欠な存在となっているのがシオミズツボワムシ(Brachionus plicatilis sp. complex)である。   Rotifer is a collective term for organisms belonging to the annelid genital class, and about 2000 species are known. Among them, Brachionus plicatilis sp. Complex is indispensable as an initial food for seed production of marine fish.

ワムシは、(1)稚魚(仔魚)の口径,咽頭径に見合った大きさであること、(2)形状が単純、且つ壊れ易いこと、(3)消化吸収されること、(4)大量培養が容易にできること、(5)十分な栄養価があること、(6)飼育水を悪化させないこと、(7)稚魚(仔魚)の摂餌生態に合致していること等、海産稚魚(仔魚)の初期餌料に求められる条件に合致する。つまり、ワムシは、大きさが0.1〜0.3 mm程度であり、運動性があること、大量培養ができること、培養用餌料によって栄養価の改善ができること、消化能力の低い稚魚(仔魚)でも消化吸収できることから、初期餌料に求められる条件を備えている。   Rotifers are (1) sized to match the caliber and pharyngeal diameter of larvae (2), (2) simple and fragile, (3) digested and absorbed, (4) mass culture (5) Sufficient nutritional value, (6) Do not deteriorate the breeding water, (7) Match the feeding ecology of fry (larvae), marine fry (larvae) It meets the conditions required for the initial feed. In other words, rotifers are about 0.1 to 0.3 mm in size, have motility, can be cultured in large quantities, can be improved in nutritional value by food for culture, and can be digested and absorbed even by low-digestion fry (larvae). Therefore, it has the conditions required for the initial feed.

また、飼育稚魚(仔魚)の成育に不可欠なEPAやDHA等の高度不飽和脂肪酸を給餌前のワムシに取り込ませて、ワムシの餌料価値を高めることが好ましい。   In addition, it is preferable to increase the feed value of rotifers by incorporating highly unsaturated fatty acids such as EPA and DHA that are indispensable for the growth of rearing fry (larvae) into rotifers before feeding.

ワムシ等の餌用生物の強化方法
本発明の餌用生物用油脂組成物をワムシ(シオミズツボワムシ等)等の餌用生物に使用する場合は、一次培養したワムシを、魚に与える6〜12時間前に必要量だけ採取し水槽に移す。次いで、パン酵母を培養液1000L当たり100〜300g程度添加すると同時に、本発明の餌用生物用油脂組成物を培養液1000L当たり150〜220g程度添加して、餌用生物を栄養強化することができる。
Method for Enhancing Feeding Organisms such as Rotifers When the fat composition for foods of the present invention is used for feeding organisms such as rotifers (such as rotifers), primary cultivated rotifers are given to fish 6 to Collect only the required amount 12 hours before transfer to the aquarium. Next, baker's yeast can be added to about 100 to 300 g per 1000 L of the culture solution, and at the same time, about 150 to 220 g of the feed biological oil and fat composition of the present invention can be added to 1000 L of the culture solution to enhance the nutrition of the feed organism. .

栄養強化開始後14日間程度で栄養強化されたワムシ等の餌用生物を回収し、クロソイ、ヒラメ等の稚魚(仔魚)に与える。   Collect prey-enriched rotifers and other prey organisms in about 14 days after the start of fortification, and feed them to juvenile fish (larvae) such as black soybeans and flounder.

アルテミア等の餌用生物の強化方法
本発明の餌用生物用油脂組成物をアルテミア等の餌用生物に使用する場合は、孵化・単離したアルテミア幼生を栄養強化槽に移す。次いで、本発明の餌用生物用油脂組成物を飼育水1000L当たり150〜300g程度添加する。
Method for Enhancing Prey Organisms such as Artemia When using the preeminent biological fat composition of the present invention for prey organisms such as Artemia, hatched and isolated artemia larvae are transferred to a nutrient enrichment tank. Next, about 150 to 300 g of the biological fat and oil composition for feed of the present invention is added per 1000 L of breeding water.

栄養強化開始後14日間程度で栄養強化されたアルテミアを回収し、クロソイ、ヒラメ等の稚魚(仔魚)に与える。   Collect the fortified artemia for about 14 days after the start of fortification and give it to juvenile fish (larvae) such as blackfish and flounder.

本発明は、好ましい態様として、その水相はマンノビオースを含有し、その油相は魚油、DHA、EPA等を含有するので、稚魚の餌用ワムシ類(餌用生物)等に与えるに際して、各種の栄養成分がバランス良く強化された飼料となる。この飼料は、それら餌用生物によって摂取され、その結果、それを捕食するクロソイ、ヒラメ等の稚魚を死滅させることなく健全に生長させることが可能となる。   In the present invention, as a preferred embodiment, the water phase contains mannobiose and the oil phase contains fish oil, DHA, EPA, etc. The feed is enriched with nutrients in a well-balanced manner. This feed is ingested by these feed organisms, and as a result, it is possible to grow healthy without killing blackfish, flounder and other fry that prey on it.

以下に、本発明を、実施例を用いてより詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to examples.

<検討1>餌用生物用油脂組成物の調製
表1の配合に従い、餌用生物用油脂組成物及び比較例サンプルの調製を行った。
<Study 1> Preparation of biological oil composition for feed According to the formulation in Table 1, a biological fat composition for feed and a comparative sample were prepared.

調製法は、下記「餌用生物用油脂組成物の調製法」に従った。   The preparation method was in accordance with the following “Preparation method of biological fat composition for feed”.

表1の説明
DHA/EPA濃縮魚油には、DHA及びEPAを夫々30質量%含有している油脂を使用した。
Description of Table 1
For DHA / EPA concentrated fish oil, fats and oils containing 30% by mass of DHA and EPA were used.

マンノビオース水溶液は、水にマンノビオースを22.5質量%となるように溶解したものを使用した。   The mannobiose aqueous solution used was prepared by dissolving mannobiose in water to 22.5% by mass.

乳化剤1には阪本薬品工業製のポリグリセリン脂肪酸エステル「CRS-75」を使用した。   For emulsifier 1, polyglycerin fatty acid ester “CRS-75” manufactured by Sakamoto Pharmaceutical Co., Ltd. was used.

餌用生物用油脂組成物の調製法
1.表1の配合に従い、乳化剤1を、DHA/EPA濃縮魚油に溶解した。
Preparation method of biological fat composition for feed
1. According to the formulation in Table 1, Emulsifier 1 was dissolved in DHA / EPA concentrated fish oil.

2.ホモミキサーにて12,000rpmで攪拌しているところへ、表1の配合に従いマンノビオース水溶液若しくは水を添加した。   2. A mannobiose aqueous solution or water was added to the mixture stirred at 12,000 rpm with a homomixer according to the formulation shown in Table 1.

3.10分間攪拌を継続し、W/O乳化物とした。   3. Stirring was continued for 10 minutes to obtain a W / O emulsion.

<検討2>乳化飼料の調製
表2の配合に従い、乳化飼料及び比較例サンプルの調製を行った。
<Study 2> Preparation of emulsified feed According to the formulation in Table 2, an emulsified feed and a comparative sample were prepared.

調製法は、下記「乳化飼料の調製法」に従った。   The preparation method followed the following “preparation method of emulsified feed”.

表2の説明
ゼラチンには新田ゼラチン製「ニューシルバー顆粒」を使用した。
Description of Table 2 “New Silver Granule” made by Nitta Gelatin was used as the gelatin.

アラビアゴムにはキシダ化学製製品を使用した。   A product made by Kishida Chemical was used for gum arabic.

乳化剤2には三菱化学フーズ製のシュガーエステル「リョートーシュガーエステルS-170」(HLB:1)を使用した。   As the emulsifier 2, sugar ester “Ryoto Sugar Ester S-170” (HLB: 1) manufactured by Mitsubishi Chemical Foods was used.

乳化剤3には三菱化学フーズ製のシュガーエステル「リョートーシュガーエステルS-1670」(HLB:16)を使用した。   As the emulsifier 3, sugar ester “Ryoto Sugar Ester S-1670” (HLB: 16) manufactured by Mitsubishi Chemical Foods was used.

乳化飼料の調製法
1.配合に従い、蒸留水にゼラチン、乳化剤3を溶解し、80℃で保持した。これを水相と称した。
Preparation method of emulsified feed
1. According to the formulation, gelatin and emulsifier 3 were dissolved in distilled water and kept at 80 ° C. This was called the water phase.

2.配合に従い、実施例1に係る油脂組成物及び比較例1に係る油脂組成物に乳化剤2を溶解し80℃に保持した。これを油相と称した。   2. According to the formulation, the emulsifier 2 was dissolved in the fat composition according to Example 1 and the fat composition according to Comparative Example 1, and maintained at 80 ° C. This was called the oil phase.

3.水相をホモミキサーにて3,000rpmで攪拌しているところへ、油相を少量ずつ添加して5分間保持して乳化させてW/O/W乳化物とした。   3. To the place where the aqueous phase was stirred at 3,000 rpm with a homomixer, the oil phase was added little by little and held for 5 minutes to emulsify to give a W / O / W emulsion.

<検討3>餌用生物への給餌試験
表3の区分に従い、給餌試験を行った。
<Study 3> Feeding test for feeding organisms Feeding tests were conducted according to the categories in Table 3.

試験方法は、下記「乳化飼料の給餌方法」に従った。   The test method followed the following “feeding method of emulsified feed”.

表3の説明
市販飼料には、クロレラ工業株式会社製「スーパーカプセルA-1」を使用した。本品は、ワムシ、アルテミアの栄養強化餌料であり、DHA、EPAを含む油脂をマイクロカプセル化したものであった。
Description of Table 3 “Super Capsule A-1” manufactured by Chlorella Kogyo Co., Ltd. was used as a commercial feed. This product is a nutrient-enriched feed for rotifer and artemia, and is a microencapsulated oil containing DHA and EPA.

乳化飼料の給餌方法
餌用生物を培養している海水1,000mLに対し、表に従い各成分を上乗せ添加した。
Feeding method of emulsified feed Each component was added in accordance with the table to 1,000 mL of seawater in which the organism for feeding was cultured.

実施例2に係る乳化飼料及び比較例2に係る乳化飼料は35〜45℃の湯せんにて融解し、添加した。   The emulsified feed according to Example 2 and the emulsified feed according to Comparative Example 2 were melted in a hot water bath at 35 to 45 ° C. and added.

その他の条件は以下の通りとした。   Other conditions were as follows.

餌用生物 アルテミア
培養水温:28℃
培養時間:10h
培養密度:150個体/mL
通気量:300mL/min
<検討4>稚魚への給餌試験
クロソイ、ヒラメ各稚魚を対象に、検討3で調製した各区のアルテミアを用い、各試験に供する稚魚を調製した。条件を表4に示した。
Prey organism Artemia Culture water temperature: 28 ℃
Incubation time: 10h
Culture density: 150 individuals / mL
Aeration rate: 300mL / min
<Study 4> Feeding test for fry The fry fish to be used for each test was prepared for each black soy and flounder fry using the Artemia of each section prepared in Study 3. The conditions are shown in Table 4.

<検討4の1>無給餌飼育試験
上記<検討4>で準備した稚魚を用い、無給餌飼育試験を行った。
<Examination 4-1> No-feeding rearing test Using the fry prepared in <Examination 4> above, an unfeeding rearing test was conducted.

方法は、以下に記載した。   The method is described below.

結果を図1(ヒラメの無給餌飼育試験)及び図2(クロソイの無給餌飼育試験)に記載した。   The results are shown in FIG. 1 (flour-free feeding breeding test) and FIG. 2 (black soybean non-feeding breeding test).

無給餌飼育試験法
1.検討4の1で準備した稚魚(クロソイ、ヒラメ)を、無給餌状態で、ヒラメは17℃、クロソイは16℃で飼育した。
Feeding breeding test method
1. The juveniles (black soy, flounder) prepared in 1 of Study 4 were bred at 17 ° C for flounder and 16 ° C for black soy without feeding.

2.1日毎に生残率を確認した。結果を図1(ヒラメの無給餌飼育試験)及び図2(クロソイの無給餌飼育試験)に示した。   2. Survival rate was confirmed every day. The results are shown in FIG. 1 (flour-free feeding breeding test) and FIG. 2 (black soybean non-feeding breeding test).

考察
図1及び2に示した通り、本発明に係る油脂組成物を使用した餌用生物を与えたヒラメ(図1)及びクロソイ(図2)は、高い生残率を示した。
Discussion As shown in FIGS. 1 and 2, flounder (FIG. 1) and black soy (FIG. 2) fed with a bait organism using the oil and fat composition according to the present invention showed a high survival rate.

<検討4の2>高水温負荷試験
ヒラメ稚魚を対象に、高水温負荷試験を行った。
<Examination 4-2 > High water temperature load test A high water temperature load test was conducted on flounder larvae.

具体的な方法は、下記「高水温負荷試験法」に記載した。   The specific method was described in the following “High water temperature load test method”.

結果を図3(ヒラメの高温負荷試験)に記載した。   The results are shown in FIG. 3 (Flounder high temperature load test).

高水温負荷試験法
1.上記<検討4>で準備した稚魚(ヒラメ)20個体ずつを容器に入れ、18℃に温調した。
High water temperature load test method
1. Twenty juveniles (flounder) prepared in <Study 4> above were placed in a container and temperature-controlled at 18 ° C.

2.1℃/30分で28℃まで昇温した。   2. The temperature was raised to 28 ° C at 1 ° C / 30 minutes.

3.42時間後の生残率を測定した。   3. Survival rate after 42 hours was measured.

考察
図3(ヒラメの高温負荷試験)に示した通り、本発明に係る油脂組成物を使用した餌用生物を与えたヒラメは、高い生残率を示した。
Discussion As shown in FIG. 3 (high temperature load test of Japanese flounder), Japanese flounder fed with a feed organism using the oil and fat composition according to the present invention showed a high survival rate.

<検討4の3>低塩分負荷試験
ヒラメ稚魚を対象に、低塩分負荷試験を行った。
<Examination 4-3 > Low salinity load test A low salt load test was conducted on juvenile Japanese flounder.

具体的な方法は、下記「低塩分負荷試験法」に記載した。   The specific method was described in the following “low salt load test method”.

結果を図4(ヒラメの低塩分負荷試験)に記載した。   The results are shown in FIG. 4 (Flounder low salt load test).

低塩分負荷試験法
1.<検討4の1>で準備した稚魚(ヒラメ)20個体ずつを容器(海水100mL入り)にいれ、18℃に温調した。
Low salt load test method
1. Twenty juveniles (flounder) prepared in <Examination 4-1> were placed in a container (with 100 mL of seawater) and the temperature was adjusted to 18 ° C.

2.試験開始から360分まで塩分0.5質量%に希釈した海水で飼育した。   2. The animals were reared in seawater diluted to 0.5% by mass from the start of the test to 360 minutes.

3.360分から1,440分まで塩分0.1質量%に希釈した海水で飼育した。   3. The animals were reared in seawater diluted to 0.1% by mass from 360 to 1,440 minutes.

4.1,440分での生存率を測定した。   4. The survival rate at 1,440 minutes was measured.

考察
図4(ヒラメの低塩分負荷試験)に示した通り、本発明に係る油脂組成物を使用した餌用生物を与えたヒラメは、高い生残率を示した。
Discussion As shown in FIG. 4 (Flounder Low Salinity Load Test), flounder fed with a bait organism using the oil and fat composition according to the present invention showed a high survival rate.

<検討4の4>核酸(RNA/DNA)分析
上記<検討4>で準備した稚魚(ヒラメ)について、核酸(RNA/DNA)を分析した。
<Examination 4-4> Analysis of Nucleic Acid (RNA / DNA) Nucleic acid (RNA / DNA) was analyzed for the fry prepared in <Examination 4>.

方法は、STS変法に従った(中野広著「稚仔魚研究のための核酸の定量法」海洋と生物54(Vol.10-No.1)、1988より)。   The method was in accordance with the modified STS method (from Hiroshi Nakano, “Quantification of nucleic acids for the study of juvenile fish”, Oceans and organisms 54 (Vol.10-No.1), 1988).

結果を図5(ヒラメ稚魚の核酸分析)に示した。   The results are shown in FIG. 5 (nucleic acid analysis of Japanese flounder larvae).

考察
図5(ヒラメ稚魚の核酸分析)に示した通り、本発明に係る油脂組成物を使用した餌用生物を与えたヒラメは、高いRNA/DNA値を示し、活性が高いことが示された。
Discussion As shown in FIG. 5 (nucleic acid analysis of flounder larvae), flounder fed with a bait organism using the oil and fat composition according to the present invention showed high RNA / DNA values and high activity. .

マンノビオースは成長、稚魚活力に影響を与えることが分かった。   Mannobiose was found to affect growth and fry vitality.

本発明のマンノビオースを含む餌用生物用油脂組成物は、乳化飼料として、餌用生物に給餌し、次いでこの餌用生物をクロソイ、ヒラメ等の稚魚に与えることで、それら稚魚の成長、生残及び活力に、良い影響を及ぼすことが可能となった。   The biological fat composition for food containing mannobiose according to the present invention is fed to a living organism as an emulsified feed, and then fed to the young fish such as black soybean, flounder, etc. And it became possible to have a positive effect on vitality.

本発明の餌用生物用油脂組成物やこの餌用生物用油脂組成物を給餌して得られる餌用生物は、クロソイ、ヒラメ等の稚魚の養殖で、魚病に対しても有効に働き、抗生物質の使用を抑えることが可能となる。   The bait biological fat composition of the present invention and the bait organism obtained by feeding this bait biological fat composition are effective for fish diseases in the cultivation of juvenile blackfish, flounder and the like, It becomes possible to suppress the use of antibiotics.

本発明の餌用生物用油脂組成物や餌用生物は、栄養強化剤としてマンノビオースを含み、魚類(稚魚)に対して、外部形態や生化学的面で有効である。本発明は、クロソイ、ヒラメ等の稚魚を養殖する際に、養殖稚魚が捕食する餌用生物の飼料等として、各種の栄養成分がバランス良く含有された飼料となる。   The fat composition for feed biological use and the feed organism of the present invention contain mannobiose as a nutrient enhancer, and are effective for fish (fry) in terms of external form and biochemistry. The present invention provides a feed containing various nutritional components in a well-balanced manner as a feed for feed organisms that are fed by cultured larvae when cultivating larvae such as black soy and flounder.

Claims (10)

マンノビオースが溶解した水相が油相に分散された、餌用生物用油脂組成物。 A biological fat composition for feed, wherein an aqueous phase in which mannobiose is dissolved is dispersed in an oil phase. 前記水相は、マンノビオースが3〜50質量%溶解した水相である、請求項1に記載の餌用生物用油脂組成物。 The biological fat and oil composition for feed according to claim 1, wherein the aqueous phase is an aqueous phase in which 3 to 50 mass% of mannobiose is dissolved. 前記餌用生物用油脂組成物は、水相と油相との総量を基準に、水相1〜20質量%が油相に分散された餌用生物用油脂組成物である、請求項1又は2に記載の餌用生物用油脂組成物。 The said biological fat composition for feed is a biological fat composition for feed, wherein 1 to 20% by mass of the aqueous phase is dispersed in the oil phase based on the total amount of the aqueous phase and the oil phase. 2. The biological fat composition for food according to 2. 前記油相は、油溶性乳化剤を含む油相である、請求項1〜3のいずれかに記載の餌用生物用油脂組成物。 The biological oil composition for feed according to any one of claims 1 to 3, wherein the oil phase is an oil phase containing an oil-soluble emulsifier. 前記油溶性乳化剤は、ポリグリセリン脂肪酸エステルである、請求項1〜4のいずれかに記載の餌用生物用油脂組成物。 The fat and oil composition for feed according to any one of claims 1 to 4, wherein the oil-soluble emulsifier is a polyglycerin fatty acid ester. 前記油相は、ドコサヘキサエン酸(DHA)及びエイコサペンタエン酸(EPA)から選ばれる1以上を構成脂肪酸とする食用油を含む、請求項1〜5のいずれかに記載の餌用生物用油脂組成物。 The said oil phase contains the edible oil which uses as a constituent fatty acid 1 or more chosen from docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), The biological fats and oils composition for feed in any one of Claims 1-5 . マンノビオースが溶解した水相が油相に分散された、餌用生物用油脂組成物であって、
水相と油相との質量比は、水相:油相=1〜20質量%:99〜80質量%であり、
水相は、マンノビオースが3〜50質量%溶解しており、
油相は、油溶性乳化剤を1〜5質量%含む、
餌用生物用油脂組成物。
A biological fat composition for feed, in which an aqueous phase in which mannobiose is dissolved is dispersed in an oil phase,
The mass ratio of the water phase and the oil phase is: water phase: oil phase = 1-20% by mass: 99-80% by mass,
In the aqueous phase, 3-50% by mass of mannobiose is dissolved,
The oil phase contains 1 to 5% by mass of an oil-soluble emulsifier,
A biological fat composition for feed.
請求項1〜7のいずれかに記載の餌用生物用油脂組成物の製造方法であって、
マンノビオースが溶解した水相を、油相に分散させる工程を含む、
餌用生物用油脂組成物の製造方法。
It is a manufacturing method of the fats and oils composition for feeds in any one of Claims 1-7,
Including a step of dispersing an aqueous phase in which mannobiose is dissolved in an oil phase,
A method for producing a biological fat composition for feed.
餌用生物の製造方法であって、
餌用生物に、請求項1〜7のいずれかに記載の餌用生物用油脂組成物を給餌する工程を含む、
餌用生物の製造方法。
A method for producing a bait organism,
Feeding the biological organism for feed with the fat composition for biological organisms according to any one of claims 1 to 7,
A method for producing a bait organism.
前記餌用生物は、ワムシ及びアルテミアからなる群から選ばれる少なくとも1種の生物である、請求項8記載の餌用生物の製造方法。






The method for producing a bait organism according to claim 8, wherein the bait organism is at least one organism selected from the group consisting of rotifers and artemia.






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