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Feed for fish farming

A technology of feed and fishmeal, which is applied in the field of fish feed for aquaculture tuna, can solve the problems of artificial feed low preference, high preference, transition delay, etc., and achieve excellent feed intake and feed efficiency, excellent and stable feed shelf life excellent effect

Active Publication Date: 2012-04-04
NIPPON SUISAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although switching to artificial diets is necessary for continued fish farming, the preference for raw food in highly carnivorous fish species is extremely high, meaning that switching to artificial diets is not easy for these fish types
For example, Pacific bluefin tuna (Thunnus orientalis) and northern bluefin tuna (Thunnus thynnus ) have a very strong preference for raw diets, but a very low preference for artificial diets, which means that for these species there is a range from raw diets to Delayed transition to artificial feed
In addition, the transition from raw to artificial diets is progressing for red cabbage (Seriola quinqueradiata) and Dumber's amberjack (Seriola dumerili), but it is still not easy to raise these fish on artificial diets alone

Method used

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  • Feed for fish farming
  • Feed for fish farming
  • Feed for fish farming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Feed with surimi-containing outer layer

[0111] By mixing 45 wt% surimi, 18 wt% water, 19 wt% fish meal, 9 wt% fish oil, 3 wt% salt, 0.3 wt% gluten, 2.5 wt% sucrose, 2.0% by weight of polysaccharide thickener (Amicol milk, Nichiden Chemical Co., Ltd. tapioca capryl succinic acid), 2.0% by weight of isolated soybean protein powder (NiyuyifujiproSEH, Fuji Oil Co., Ltd. Co., Ltd.), 1.5% by weight of vitamin mixture, 0.45% by weight of baking soda, 0.45% by weight of ovalbumin, and 0.25% by weight of polyphosphate to prepare the outer layer composition.

[0112] In a mixer, 50% by weight of fish meal, 41% by weight of fish oil, 5% by weight of hydrogenated oil, and 4% by weight of oil-absorbing dextrin (Oil Q No. 50, manufactured by Nichiden Chemical Co., Ltd.) were prepared. layer composition.

[0113] The composition for the outer layer and the composition for the inner layer were introduced into a stuffing machine ("Cobasebun Silhouettes series" manufactured by Koba...

Embodiment 2

[0119] Method: Using the high-protein, high-fat feed obtained in Example 1, the growth characteristics of tuna fish were compared with raw bait. Two circular protected areas with a diameter of 10m were prepared, and 140 tuna fish were placed in each and cultured. The average water temperature during cultivation was 25°C. Fish were fed feed once a day until they were satiated. The amount of feed actually consumed (amount of intake) was calculated by subtracting the amount of feed remaining from the amount of feed provided.

[0120] Results: Throughout the entire test period, the amount of the feed of Example 1 ingested was 50% to 60% by weight of the amount of raw bait. By calculating the number of calories per unit weight of the feed, the number of calories of the feed in Example 1 is 3600 kcal / kg, while the raw bait has a number of calories of 1670 kcal / kg. By ingesting a feed equivalent to approximately half the weight of the raw bait, the fish can consume at least as man...

experiment example 12

[0164] Addition of wheat flour

[0165] Based on the results obtained in Test Example 11, rectangular samples were prepared using the basic formula shown in Table 13 (tapioca starch (etherified): fish meal = 24:53), which was considered as the threshold value of the fish meal content, but In this formulation the addition of wheat flour was increased as shown in Table 14, and the angle α at which cracks appeared was measured.

[0166] As shown in Table 14, the addition of wheat flour improved the angle α at which cracks appeared. Furthermore, it was confirmed that the addition of wheat flour affects the effect of imparting strength to the outer layer.

[0167] Table 14

[0168] Wheat Flour (wt%)

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Abstract

Disclosed is a feed for fish farming which has a high stability in feed supply, good feed storage properties, a good feed intake and a high feed efficiency. A feed for fish farming consisting of an outer layer and an inner layer, characterized in that a composition constituting the outer layer has physical properties of a fracture stress being 5104-1106 N / m2, an aggregation rate (30%) being 0.4-1.0, and a fracture strain being 30-80%. A feed for fish farming characterized by consisting of an outer layer constructed by a heated gel which comprises a protein and / or a starch, and an inner layer comprising a composition which contains nutrient ingredients including fish meal and a fat as the essential ingredients. As the protein, ground fish meat, nakaochi (left-over fish meat on the spine), krill, gelatin, collagen, gluten, egg albumen and soybean protein are preferred. As the starch, tapioca starch, wheat starch, potato starch, corn starch, bean starch, waxy corn starch and processed products of these starches are preferred.

Description

technical field [0001] The present invention relates to a pisciculture feed for raising cultured fish, and more particularly, the present invention relates to a fish aquaculture feed suitable for aquaculture tuna. Background technique [0002] As the feed for fish farming, raw bait (fresh or frozen horse mackerel, mackerel, sardine, sand eel, squid, etc.) that is also consumed as bait in nature comes to mind first. Raw bait is the original natural bait of fish, so it is excellent in terms of fish preference and nutritional benefits of fish, but raw bait suffers from many problems such as stable supply and stable product quality because it is derived from natural resources. Wet pellets obtained by blending vitamins, minerals, natural starch, etc. Particulates can cause environmental pollution problems. Furthermore, the use of these feeds involves disadvantages such as the cost of storage facilities due to the need for storage in refrigerators or cold storage. [0003] The ...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/16
CPCA23K1/188A23K1/004A23K1/164A23K20/158A23K40/30A23K50/80Y02A40/818
Inventor 五藤刚志福田康广盐谷格二阶堂英城田中庸介高坂妙子
Owner NIPPON SUISAN KAISHA LTD
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