JP2640533B2 - Porous fish feed and its production method - Google Patents
Porous fish feed and its production methodInfo
- Publication number
- JP2640533B2 JP2640533B2 JP1077522A JP7752289A JP2640533B2 JP 2640533 B2 JP2640533 B2 JP 2640533B2 JP 1077522 A JP1077522 A JP 1077522A JP 7752289 A JP7752289 A JP 7752289A JP 2640533 B2 JP2640533 B2 JP 2640533B2
- Authority
- JP
- Japan
- Prior art keywords
- feed
- fish
- porous
- water
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
- Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
Landscapes
- Feed For Specific Animals (AREA)
- Fodder In General (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ハマチ、ブリ、ヒラメ、シマアジ、マグ
ロ、サケ、マス、ウナギなどの養殖魚、特にハマチの餌
として好適に使用できる多孔性養魚飼料とその製造方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cultured fish such as yellowtail, yellowtail, flounder, trevally, tuna, salmon, trout, eel, etc., and porous fish which can be suitably used as bait for yellowtail. The present invention relates to a feed and a production method thereof.
〔従来の技術〕 近年、わが国の栽培漁業はますます重要な地位を占め
るようになっている。しかし、ハマチやタイに代表され
る魚の海面養殖では多獲魚であるイワシ、サバなどの生
魚または冷凍魚をミンチ、切断、丸の形状で給餌するた
め、海水中への水溶性栄養分の溶出が多くまたは水中で
のバラケが多く、魚の捕食率が低いという欠点がある。
特にハマチやブリなどは、従来他の魚種で広く使用され
ている固型養魚飼料（ドライペレット）を摂餌しなかっ
たため、長年にわたり上記生餌給餌形態がとられてお
り、この分野での固型飼料の研究が進まず現在環境悪
化、へい死の増大、経営悪化への悪循環が起こりやすく
なっている。[Related Art] In recent years, cultivated fisheries in Japan have become increasingly important. However, in the sea-farming of fish such as hamachi and Thailand, raw or frozen fish such as sardines and mackerel, which are high catch fish, are minced, cut, and fed in a round shape, the elution of water-soluble nutrients into seawater may occur. There is a drawback that there are many or varieties in water and the predation rate of fish is low.
In particular, hamachi and yellowtail did not feed on solid fish feed (dry pellets), which has been widely used in other fish species, and thus the above-mentioned raw feed feeding form has been adopted for many years. Research on solid feed has not progressed, and the vicious cycle of environmental deterioration, increased mortality, and deterioration of management is likely to occur.
従って、現在、ハマチ、タイなどの海水魚向養魚用餌
用として魚粉、小麦粉、大豆油かす、グルテンミール、
米ヌカなどを主原料として、これに各種ビタミン、ミネ
ラル類さらにアルギン酸ナトリウム、カルボキシメチル
セルロースナトリウム（CMC）、グアガム等の粘結剤を
配合して粉末状にした配合飼料と、生魚もしくは冷凍魚
をミンチ状にしたものを混合して造粒したモイストペレ
ットが普及しつつある。このモイストペレットは、水分
を30〜40％以上含みやわらかいため嗜好性もよく、養魚
は生餌にひってきする生長をしている。しかし、モイス
トペレットの製造設備に多額の設備投資を要すること、
品質にバラツキが生じること及び給餌作業がふえる等数
多くの問題がある。Therefore, at present, fish meal, flour, soybean oil cake, gluten meal,
Composed of raw materials such as rice bran and other vitamins and minerals, as well as binding agents such as sodium alginate, sodium carboxymethylcellulose (CMC), and guar gum, and minced raw or frozen fish. Moist pellets obtained by mixing and granulating moist pellets are becoming popular. The moist pellets have a good palatability because they are soft and contain at least 30 to 40% of water, and the fish farming grows to feed on raw food. However, it requires a large amount of capital investment in manufacturing equipment for moist pellets,
There are a number of problems, including variations in quality and increased feeding.
こうした中で最近品質的に安定している配合飼料のみ
を使用した多孔性固型養魚飼料が市場に出現している。
この多孔性飼料は、通常、養魚用配合飼料に用いられる
魚粉、大豆油かす、コーングルテンミール、でんぷん質
（でんぷん粉、小麦粉など）及び米ぬかなどを主原料と
し、ビタミンやミネラル類を加えた後、エクストルーダ
ー（加圧加熱押出機）で加圧、押し出して成型された飼
料であり、ハマチ用のものも出現している。特に、ハマ
チは、乾燥した硬い固型配合飼料を好まず、そのままで
は摂餌しないので、これらの多孔性養魚飼料を用いる場
合には、飼料に水または水と油をしみ込ませてスポンジ
状にして給餌させる必要がある。従って、水を用意した
り作業面でも手間がかかるうえ、自動給餌がむずかしい
という問題がある。また栄養面でも水溶性ビタミン類が
水中へ流出する恐れもあり、さらに魚の成長も従来の生
餌飼料を与えた場合に比べると劣るなど実用的でなくあ
まり普及していないのが現状である。Under such circumstances, a porous solid fish feed using only a compound feed that is stable in quality has recently appeared on the market.
This porous feed is mainly composed of fish meal, soybean oil cake, corn gluten meal, starch (starch, flour, etc.), rice bran, etc., which are usually used in fish feed compound feed, and after adding vitamins and minerals. It is a feed that is molded by pressing and extruding with an extruder (pressurizing and heating extruder), and feed for hamachi has also appeared. In particular, hamachi does not like dry hard solid compound feed and does not feed it as it is, so when using these porous fish feeds, sponge the feed with water or water and oil. They need to be fed. Therefore, there is a problem that it takes time to prepare water and work, and that automatic feeding is difficult. Also, in terms of nutrition, water-soluble vitamins may flow out into the water, and the growth of fish is inferior to conventional feeds, and is not practical and is not widely used.
本発明は、乾燥した固型配合飼料を好まないハマチや
ブリなどの海水魚が食べ、かつこれらの魚の成育を向上
させることができる固型配合飼料を提供することを目的
とする。An object of the present invention is to provide a solid compound feed capable of eating seawater fish such as yellowtail and yellowtail that do not like dry solid compound feed and improving the growth of these fish.
本発明は、また上記固型飼料の効率的な製造方法を提
供することを目的とする。Another object of the present invention is to provide an efficient method for producing the above solid feed.
本発明は、飼料中の粗脂肪含量を高め、かつ硬度が低
くて嵩比重が特定の範囲にある多孔性形態の固型飼料を
用いると上記課題を解決できるとの知見、及び該飼料を
製造するにあたり、油脂を２回に分けて添加すると効率
よく、かつすぐれた固型飼料を製造できるとの知見に基
づいてなされたのである。The present invention is based on the finding that the above problem can be solved by using a solid feed in a porous form in which the crude fat content in the feed is increased, the hardness is low, and the bulk specific gravity is in a specific range. In doing so, it was made based on the knowledge that adding solid fats and oils in two portions would produce an efficient and excellent solid feed.
すなわち、本発明は、粗脂肪含有量が13〜35重量％で
あり、硬度が0.5〜4.0kg/cm2で、かつ嵩比重が0.35〜0.
65の範囲にあることを特徴とする多孔性養魚飼料を提供
する。本発明は、また養魚飼料原料に油脂を添加後、水
を加えて加圧加熱用押出機で加熱混練し、次いで乾燥し
た後、油脂を含浸させることを特徴とする上記多孔性養
魚飼料の製造方法を提供する。That is, the present invention is, crude fat content is 13 to 35 wt%, hardness of at 0.5~4.0kg / cm 2, and a bulk specific gravity of 0.35 to 0.
A porous fish feed is provided, wherein the feed is in the range of 65. The present invention also provides a method for producing the above-described porous fish feed, wherein the fat and oil are added to the raw material of the fish feed, water is added thereto, and the mixture is heated and kneaded by an extruder for pressurizing and heating, and then dried and impregnated with the fat. Provide a way.
本発明の多孔性高脂質養魚飼料は従来の多孔性養魚飼
料の原材料とほぼ同じものを用いることができ、魚粉、
大豆油かす、コーングルテンミールなどのタンパク質、
でんぷん質（でんぷん粉、小麦粉など）に、ビタミン、
ミネラル類を含有するが、特に粗脂肪を13〜35重量％
（以下％と略称する）と多量に含有することを特徴とす
る。つまり、このような量で粗脂肪を含有させると成長
促進においてすぐれた効果が得られるからである。粗脂
肪の量は、好ましくは18〜30％、より好ましくは、20〜
30％、最も好ましくは23〜30％である。該粗脂肪は、魚
粉などの原材料由来の脂肪分に加えて、動物性油脂や植
物性油脂が含まれる。尚、油脂としては高度不飽和脂肪
酸のω３系脂肪酸を含むものが好ましく、融点が−20〜
50℃のものを用いるのが好ましい。The porous high-lipid fish feed of the present invention can use almost the same raw materials as conventional porous fish feed, fish meal,
Proteins such as soybean oil cake, corn gluten meal,
Starch (starch, flour, etc.), vitamins,
Contains minerals, especially 13-35% by weight of crude fat
(Hereinafter abbreviated as%). That is, when crude fat is contained in such an amount, an excellent effect in promoting growth is obtained. The amount of crude fat is preferably 18-30%, more preferably 20-
30%, most preferably 23-30%. The crude fat contains animal fats and vegetable fats and oils in addition to fats derived from raw materials such as fish meal. The fats and oils preferably contain ω3 fatty acids of highly unsaturated fatty acids, and have a melting point of -20 to
It is preferable to use one at 50 ° C.
本発明の飼料成分は上記要件を満せば特に限定されな
いが、通常粗タンパク質35〜55％、粗脂肪13〜35％、炭
水化物５〜30％、無機物、ビタミン等１〜５％を含み、
水分含量が10％以下のものが好ましい。又、上記炭水化
物はα化デンプンの形態で含ませるのがよい。The feed component of the present invention is not particularly limited as long as it satisfies the above requirements, but usually contains 1 to 5% of crude protein 35 to 55%, crude fat 13 to 35%, carbohydrates 5 to 30%, inorganic substances, vitamins and the like,
Those having a water content of 10% or less are preferred. The above carbohydrate is preferably contained in the form of pregelatinized starch.
本発明の飼料は、上記特徴に加えて、硬度が0.5〜4.0
kg/cm2と軟かく、嵩比重が0.35〜0.65の範囲にある多孔
性形態にあることを特徴とする。すなわち、硬度を0.5
〜4.0kg/cm2、好ましくは0.7〜3.0kg/cm2、より好まし
くは1.0〜2.5kg/cm2とすることによって、魚に与える前
に水につけて飼料を軟かくするという従来の固型飼料が
有する問題を除くことができ、直接魚に与えることがで
きるのである。また嵩比重が0.40〜0.65、好ましくは0.
5〜0.65、より好ましくは0.55〜0.65の多孔性とするこ
とによって、自動給餌システムを使用して効率的な給餌
を達成できるからである。The feed of the present invention has, in addition to the above characteristics, a hardness of 0.5 to 4.0.
It is characterized by being soft as kg / cm 2 and in a porous form having a bulk specific gravity in the range of 0.35 to 0.65. That is, the hardness is 0.5
~4.0kg / cm 2, preferably by 0.7~3.0kg / cm 2, more preferably from 1.0~2.5kg / cm 2, solid conventional that soft feed dipped in water before feeding to the fish The problems with feed can be eliminated and can be fed directly to fish. Also, the bulk specific gravity is 0.40 to 0.65, preferably 0.
By having a porosity of 5 to 0.65, more preferably 0.55 to 0.65, an efficient feeding can be achieved using an automatic feeding system.
上記硬度及び嵩比重は使用原料や製造条件の調整によ
り所望の範囲とすることができる。The hardness and the bulk specific gravity can be adjusted to desired ranges by adjusting raw materials to be used and production conditions.
本発明の多孔性飼料は、上記タンパク質、炭水化物、
ビタミン等を含有する粗脂肪分２〜９％、好ましくは３
〜８％、水分含量５〜14％の原料に動物性油脂もしくは
植物性油脂を１〜６％、好ましくは３〜５％の割合で混
合し、加水加圧熱（水蒸気でも可）の存在下において、
でんぷん質をα化しつつ加熱加圧押し出しにより多孔性
固体に成型した後乾燥する方法により製造するのが好ま
しい。ここで加水量としては10〜24％の水を加えるのが
よい。このように原料配合時に油脂を加えると、加圧過
程で原材料がスリップ状態を起こし加圧が不十分になる
恐れが生じるので２軸エクストルーダーを用いて加圧押
出するのがよい。The porous feed of the present invention, the protein, carbohydrate,
Crude fat containing vitamins, etc. 2-9%, preferably 3
1 to 6%, preferably 3 to 5% of animal or vegetable oil or fat in a raw material having a water content of 5 to 14%, in the presence of heat for pressurized water (or steam). At
It is preferable that the starch is manufactured by a method in which starch is pregelatinized into a porous solid by heating and pressing and extruding into a porous solid and then dried. Here, it is preferable to add 10 to 24% of water as the amount of water. If fats and oils are added at the time of compounding the raw materials as described above, the raw materials may slip during the pressurization process and pressurization may be insufficient. Therefore, it is preferable to perform pressure extrusion using a twin-screw extruder.
２軸エクストルーダーを用いると摩擦熱を押さえて80
〜100℃といった中低温で加圧加熱及び混練が可能であ
り、原料の加熱や酸化による劣化を押えることができ
る。上記方法では、加圧加熱された原料を空気中に押出
すことにより、実質的に減圧下で水分が蒸散し膨化し、
その直後に水分含量を所定の数値となるまで乾燥すると
所望の硬度の多孔体が製造できる。Using a twin-screw extruder reduces frictional heat and reduces
Pressurized heating and kneading are possible at medium to low temperatures such as 100100 ° C., and deterioration due to heating and oxidation of raw materials can be suppressed. In the above method, by extruding the pressurized and heated raw material into the air, water evaporates and expands under substantially reduced pressure,
Immediately after that, if the moisture content is dried to a predetermined value, a porous body having a desired hardness can be produced.
上記２軸エクストルーダーを用いる方法では、配合原
料をフィーダーに供給し、次に、クッカー部においてス
チームまたは温水によって水分含量を20〜38％に上げ、
スクリュープレス部で加圧、加熱、混練されてダイから
空気中に放出される方法によるのがよい。In the method using the twin-screw extruder, the blended raw material is supplied to a feeder, and then the water content is increased to 20 to 38% by steam or hot water in a cooker section.
It is good to adopt a method of pressurizing, heating and kneading in a screw press section and discharging the air from a die into the air.
このようにして得られた多孔体を水分含量が12％、好
ましくは５〜12％となるように乾燥した後、動物性油脂
または植物性油脂およびその混合物を常温もしくは加温
した状態でスプレーもしくは噴霧するなどの手段で後添
加することでハマチ、ブリなどが活発に摂餌し、成長す
る高脂質養魚飼料が製造できる。油脂の後添加は約６％
〜約25％で行い、養魚飼料の成分を粗脂肪13％〜35％、
飼料の総エネルギー4500kcal/kg〜6100kcal/kg、好まし
くは粗脂肪18〜30％、4900kcal/kg〜5900kcal/kgに調整
するのがよい。本発明の飼料は多孔性なので、上記油脂
を極めて効率的に吸収することができる。After drying the porous body thus obtained to a water content of 12%, preferably 5 to 12%, animal fats or vegetable fats and oils and mixtures thereof are sprayed or sprayed at room temperature or in a heated state. By post-adding by spraying or the like, it is possible to produce a high fat fish feed that actively feeds and grows yellowtail and yellowtail. Approximately 6% added after fat
About 25%, the components of fish feed are 13% to 35% crude fat,
The total energy of the feed is adjusted to 4500 kcal / kg to 6100 kcal / kg, preferably 18 to 30% of crude fat, and 4900 kcal / kg to 5900 kcal / kg. Since the feed of the present invention is porous, the feed can be absorbed very efficiently.
本発明の多孔性飼料は、任意の形、大きさとすること
ができるが、ダイ等の形状を変更することにより、直径
約0.5〜50mmの球状又は直径約0.5〜50mm長さ約0.5〜100
mmの円筒状とすることができる。The porous feed of the present invention can have any shape and size, but by changing the shape of a die or the like, a spherical shape having a diameter of about 0.5 to 50 mm or a diameter of about 0.5 to 50 mm and a length of about 0.5 to 100 mm
mm.
本発明の多孔性高脂質養魚飼料は、栄養価が高く従来
乾燥固型飼料を摂餌しないとされていたハマチにおいて
も活発に捕食され、従来の生餌主体飼育に優るとも劣ら
ない成長を示した。The porous high-lipid fish feed of the present invention has a high nutritional value and is actively eaten even in yellowtail, which was conventionally supposed not to feed on dry solid feed, and shows growth that is not inferior to that of conventional raw feed-based rearing. Was.
従って、本発明の飼料は、ハマチやブリなどはもとよ
り他の多くの魚の養殖用飼料として幅広く使用できる。Therefore, the feed of the present invention can be widely used as a feed for cultivating many other fish as well as yellowtail and yellowtail.
また、嵩比重を調整することにより、フロート飼料
（嵩比重約0.35〜約0.52）や沈降性飼料（約0.52〜約0.
65）とすることができる。In addition, by adjusting the bulk specific gravity, float feed (bulk specific gravity of about 0.35 to about 0.52) and sedimentable feed (about 0.52 to about 0.52) can be used.
65).
次に実施例により本発明を具体的に説明するが、本発
明はこれらの実施例に限定されるものではない。Next, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.
実施例１ 下記の原料： 魚 粉 72％ 大豆油かす ４％ 小麦粉 13％ 馬鈴しょ澱粉 ６％ ビタミン・ミネラル ２％ 魚 油 ３％ （水分含量10％、粗脂肪含量11％） を混合機で十分ミキシングした後、２軸エクストルーダ
ー（クレクストラル社製）にて加水17％、加熱温度80℃
〜100℃下で加圧成型した後、水分10％弱に乾燥した。Example 1 The following ingredients: Fish flour 72% Soybean oil cake 4% Flour 13% Potato starch 6% Vitamin / mineral 2% Fish oil 3% (moisture content 10%, crude fat content 11%) in a mixer After sufficient mixing, add 17% water with a twin-screw extruder (manufactured by Clectral Corporation) and heat at 80 ° C.
After being molded under pressure at ℃ 100 ° C., it was dried to a moisture content of less than 10%.
その後フィードオイル（魚油）を14％スプレーし、粗
脂肪約25％の多孔性高脂質養魚飼料（直径10mm、長さ12
mmの円柱状ペレット、硬度2.3、嵩比重0.52）を得た。
尚、硬度は、木屋式硬度計を用い、加圧面の直径が5mm
φの円形の平面（プランジャー）で加圧、破砕した状態
での数値kgを、ペレットの直径から面積を算出し1cm2当
たりの破砕硬度とした（以下同じ）。After that, spray 14% feed oil (fish oil) and feed a porous high-lipid fish feed with a crude fat of about 25% (diameter 10 mm, length 12
mm cylindrical pellet, hardness 2.3, bulk specific gravity 0.52).
The hardness was measured using a Kiya type hardness tester and the diameter of the pressurized surface was 5 mm.
The numerical value kg in the state of being pressed and crushed with a circular circular plane (plunger) of φ was calculated as the crushing hardness per 1 cm 2 by calculating the area from the diameter of the pellet (the same applies hereinafter).
この多孔性飼料を用いてハマチの養殖を60日間行っ
た。一方、比較用に生餌と市販のハマチ用配合飼料を8:
2の割合で混合して造粒したモイストペレットを用いて
同様の試験を行った。結果を次に示す。Using this porous feed, hamachi was cultured for 60 days. On the other hand, raw feed and commercially available mixed feed for hamachi 8:
A similar test was performed using moist pellets mixed and granulated at a ratio of 2. The results are shown below.
上記結果から明らかな様に本発明の飼料は、水を加え
たりすることなしに使用でき、従来の生餌主体養殖より
も優れた結果を得た。また、本発明の飼料は食べ残しも
なく、利用率はモイストペレットと同等もしくはそれ以
上であった。 As is clear from the above results, the feed of the present invention can be used without adding water, and a result superior to the conventional live feed-based culture was obtained. Further, the feed of the present invention did not leave any food left behind, and the utilization was equal to or higher than that of the moist pellets.
本発明の飼料をハマチ以外のヒラメに与えて養殖した
ところ、すぐれた成長率と高い利用率が得られた。When the feed of the present invention was given to flatfish other than hamachi and cultured, excellent growth rates and high utilization rates were obtained.
実施例２ 下記の原料： 魚 粉 60％ イカミール 16％ 小麦粉 ６％ 馬鈴しょ澱粉 ８％ コーンスターチ ４％ ビタミン・ミネラル ２％ 大豆油 ４％ （水分含量10％、粗脂肪含量10％） を用い、実施例１と同一の装置を用いて加水量を15％、
加熱温度80〜95℃で加圧成形し、水分含量８％に乾燥し
た。Example 2 Using the following ingredients: fish flour 60% squid meal 16% flour 6% potato starch 8% corn starch 4% vitamins and minerals 2% soybean oil 4% (moisture content 10%, crude fat content 10%) Using the same apparatus as in Example 1, the water content was 15%,
It was pressed at a heating temperature of 80 to 95 ° C. and dried to a moisture content of 8%.
その後、油脂（融点０℃）を20％スプレーして、粗脂
肪含量30％の多孔性高脂質飼料（硬度2.0〜嵩比重0.5
5）を得た。After that, spray 20% of fats and oils (melting point 0 ° C) to give a porous high lipid feed with a crude fat content of 30% (hardness 2.0 to bulk specific gravity 0.5).
5) got.
この飼料は実施例１と同等のすぐれた性能を有してい
た。This feed had excellent performance equivalent to that of Example 1.
実施例３ 下記の原料： 魚 粉 50％ オキアミ粉末 20％ 大豆油かす ５％ 小麦粉 ７％ 馬鈴しょ澱粉 ５％ 小麦グルテン ６％ ビタミン・ミネラル ２％ フィードオイル（魚油） ３％ 大豆油 ２％ （水分含量９％、粗脂肪含量９％） を用い、実施例１と同一の装置を用いて加水量16％、加
熱温度80〜90℃で加圧成形し、水分９％まで乾燥した。Example 3 The following ingredients: fish flour 50% krill powder 20% soybean oil cake 5% flour 7% potato starch 5% wheat gluten 6% vitamins and minerals 2% feed oil (fish oil) 3% soybean oil 2% ( Using a water content of 9% and a crude fat content of 9%), the same apparatus as in Example 1 was used to carry out press molding at a water content of 16% and a heating temperature of 80 to 90 ° C., and dried to a water content of 9%.
その後、油脂（融点０℃）を20％スプレーして、粗脂
肪含量29％の多孔性高脂質飼料（硬度2.3〜嵩比重0.3
5）を得た。After that, spray 20% of fats and oils (melting point 0 ° C) to give a porous high lipid feed with a crude fat content of 29% (hardness 2.3 to bulk specific gravity 0.3).
5) got.
この飼料は浮上性であり、ハマチに与えたところすぐ
れた成長率と高い利用率が得られた。The feed was floatable and gave excellent growth and utilization when fed to Hamachi.
Claims (2)
が0.5〜4.0kg/cm2で、かつ嵩比重が0.35〜0.65の範囲に
あることを特徴とする多孔性養魚飼料。1. A porous fish feed with a crude fat content of 13 to 35% by weight, a hardness of 0.5 to 4.0 kg / cm 2 and a bulk specific gravity of 0.35 to 0.65.
加圧加熱用押出機で加熱混練し、次いで乾燥した後、油
脂を含浸させることを特徴とする請求項１記載の多孔性
養魚飼料の製造方法。2. The porous material according to claim 1, wherein after adding fats and oils to the raw material of the fish culture feed, water is added, and the mixture is heated and kneaded with a pressurizing and heating extruder, then dried and then impregnated with the fats and oils. Production method of fish feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077522A JP2640533B2 (en) | 1988-12-27 | 1989-03-29 | Porous fish feed and its production method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32996888 | 1988-12-27 | ||
| JP63-329968 | 1988-12-27 | ||
| JP1077522A JP2640533B2 (en) | 1988-12-27 | 1989-03-29 | Porous fish feed and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02257834A JPH02257834A (en) | 1990-10-18 |
| JP2640533B2 true JP2640533B2 (en) | 1997-08-13 |
Family
ID=26418599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1077522A Expired - Lifetime JP2640533B2 (en) | 1988-12-27 | 1989-03-29 | Porous fish feed and its production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2640533B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2654468B2 (en) * | 1993-03-26 | 1997-09-17 | 農林水産省水産庁養殖研究所長 | Feed for rainbow trout with powdered malt protein |
| JP2008220180A (en) * | 2007-03-08 | 2008-09-25 | Univ Kinki | Artificial formula feed for fish of thunnus, and rearing method of fish of thunnus |
| JP2011142855A (en) * | 2010-01-14 | 2011-07-28 | Kinki Univ | Compound feed for raising flounder and method for raising flounder |
-
1989
- 1989-03-29 JP JP1077522A patent/JP2640533B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02257834A (en) | 1990-10-18 |
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