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Feed block and method and apparatus for manufacturing of the feed block

A feed block and feed technology, applied in the field of feed block, can solve the problems of short shelf life and high water content

Inactive Publication Date: 2015-04-08
TROUW INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage is the price of this equipment
Due to the high water content in the feed blocks resulting in a short shelf life at room temperature it is desirable to have machinery manufacturing close to the fish farms where the feed blocks are used

Method used

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  • Feed block and method and apparatus for manufacturing of the feed block

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0071] A shredder 1 of type Kolbe TW / SW 98 was used as forming machine for the feed mass. The usual feed screw 20 in the pulverizer 1 is used. Its speed is 200 revolutions per minute. The conventional perforated disc is replaced by a new perforated disc 30 made of an alloy known per se, a so-called aluminum bronze alloy, which provides a smooth surface. The perforated disc 30 has a diameter of 96mm and a length of 70mm. The perforated disc 30 is provided with six through nozzles 32 each parallel to the central axis 5 of the perforated disc 30 . The diameter of the nozzle 32 is 22 mm, providing a total of 31.5% of the light opening to the perforated disk 30, and the ratio of the length to diameter of the nozzle 32 is 3.18. The perforated disc 30 is also provided with a central hole 34 passing through the perforated disc 30 . Placed in the central hole 34 is a through-shaft 22, which is bearing-fastened to the feed screw 20 at its first end 221 facing the feed screw 20 with ...

example 2

[0075] Feed blocks were manufactured in the same manner as in Example 1. Feed blocks were assembled from 5.3 kg of extruded fish feed of the same type as in Example 1. 0.3 kg of denatured potato starch and 1.6 kg of dried fish meal of the same type as in Example 1 were added to the 5.3 kg of extruded fish feed. Afterwards, 2.8 liters of fresh water at a temperature of about 6°C were added to the dried mixture. The finished mixture contained about 34% water by weight.

[0076] The feed blocks produced are very suitable for feeding large fish such as tuna and will ensure their distribution to the fish in cages by means of eg shoveling.

example 3

[0078]Feed blocks were manufactured in the same manner as in Example 1. Feed blocks were assembled from 7.3 kg of extruded fish feed of the same type as in Example 1. To the 7.3 kg extruded fish feed was added 0.25 kg of dried fish meal and 0.25 kg of gluten flour of so called "high elastic" quality. Afterwards, 2.2 liters of fresh water at a temperature of about 6° C. were added to the dried mixture. The finished mixture contained about 28% water by weight.

[0079] The feed blocks produced are very suitable for feeding large fish such as tuna and will ensure their distribution to the fish in cages by means of eg shoveling.

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PUM

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Abstract

Feed block containing feed particles, at least one binding agent and liquid wherein the binding agent is selected from the group consisting of cold-water soluble starch or cold-water soluble, vegetable protein; and the feed block contains less than 40% of water by weight. Also described is a method for forming a feed block and an apparatus for manufacturing of the feed block.

Description

technical field [0001] The present invention relates to a feed block for feeding large fish. More specifically, the present invention relates to a feed block consisting of fish feed pellets, a cold water soluble and digestible binder and a liquid. The invention also relates to a method for manufacturing such a feed block, and the invention also relates to a machine suitable for manufacturing such a feed block. Background technique [0002] In intensive fish farming such as salmon and rainbow trout in seawater, almost exclusively dry feed is used. The moisture content in these feed pellets is less than 10%. Low water activity prevents the growth of bacteria, mold and fungi. Therefore, such feed can be stored for a long time. Feeds used as weaning diets for feeding some fish species ranging from rotifer and Artemia larvae to dry diets are an exception. The moisture content of such feeds can be as high as 9%. Feed pellets made by pressing or extrusion can have different c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/18B30B11/24A23L7/10A23L29/238A23L29/244
CPCA23K1/188A23K1/1643B30B11/24B30B11/221A23K1/1634A23K1/003B30B11/227A23K20/142A23K20/163A23K40/20A23K40/25A23K50/80Y02A40/818B30B11/224
Inventor K·斯韦恩斯沃尔A·登伍德
Owner TROUW INT