Preparation method of high-fish-protein feed

Abstract

The invention provides a preparation method of a high-fish-protein feed, which mainly takes fresh fish as a feed protein source, and the high-fish-protein feed is prepared by the working procedures of pulping, curing, granulating, puffing and the like. After the feed is cooked and puffed, some feed-derived diseases can be eliminated, and the digestibility can be improved. Finished feed products are complete in variety, and wet feed, dry feed, submerged feed, expanded feed and functional feed can be prepared. Compared with fish and shrimp feed abusing alternative protein, the fish and shrimp feed has comprehensive advantages in the aspects of feed ratio, disease prevention and control and the like, so that the culture cost and risk can be effectively reduced. The whole feed preparation process does not use high-voltage electricity and large-scale mechanical equipment, and is more suitable for farmers in remote areas.

Description

Technical Field

[0001] The invention relates to the field of fishery feed, in particular to a method for preparing a high-fish protein feed. Background Art

[0002] Artificially farmed fish and shrimp have high requirements for protein in feed. Fish meal has always been the best source, but due to its high price, some researchers have been seeking to replace fish meal with other proteins. However, these substitutes have obvious limitations. Studies have shown that a 10%-20% replacement will have a certain impact on growth rate, and exceeding this ratio will have a serious impact. Some farmers reported that one ton of feed could produce 1100-1200 kilograms of fish in the past, but now it is only about 600-700 kilograms, and the fish are more prone to disease. Therefore, for fish and shrimp farmers, if they can control the protein source of the feed, they can eliminate the adverse effects caused by the abuse of alternative proteins and reduce the risk of farming. Summary of the invention

[0003] In order to solve the problems existing in the above background technology, the present invention provides a method for preparing a high fish protein feed.

[0004] The present invention provides a method for preparing a high-fish protein feed, which is characterized by comprising the following steps: (1) using a meat grinder to grind fresh fish into fish paste; (2) mixing the fish paste with an appropriate amount of corn flour, wheat bran, fish oil, etc., and then cooling after ripening to obtain a soft feed material; (3) fixing a clean stainless steel screen and a plastic disc, and placing the plastic disc under the stainless steel screen; (4) placing the soft feed material on the stainless steel screen and pushing, pulling and squeezing it back and forth to obtain a soft and wet granular base material.

[0005] Furthermore, in step (1), the fresh fish should be placed in ice water to cool down before being pulped, and the fish should be minced several times until the fish bones are minced into fine pieces.

[0006] Furthermore, adding Chinese herbal medicine in step (2) can produce functional feed with specific functions.

[0007] Furthermore, in step (3), the mesh size of the stainless steel screen can be adjusted to control the particle size of the soft and wet granular base material.

[0008] Furthermore, in step (4), the push-pull extrusion force can be adjusted to increase or decrease the particle size of the soft wet granular base material, and a swing granulator can be used to replace the stainless steel screen and manpower to make the soft wet granular base material. A wet granular feed machine can be used to make the feed soft material into wet granular feeds of various specifications. The soft wet granular base material and the wet granular feed can be fed directly or fed or stored after drying. After the soft wet granular base material is dried, a flat die granulator can be used to make a sinking feed. After the soft wet granular base material and the wet granular feed are dried, a dry extruder can be used to make an expanded feed.

[0009] The beneficial effects of the present invention are: (1) it can avoid the adverse effects of the abuse of alternative proteins on fish and shrimp farming; (2) after the feed is steamed and puffed, some feed-borne diseases can be eliminated and the digestibility can be improved; (3) a full range of feed products can be prepared, including wet feed, dry feed, sinking feed, puffed feed and functional feed; (4) high voltage electricity and large equipment are not required and it is suitable for use in remote areas. DETAILED DESCRIPTION

[0010] The present invention will be further described below in conjunction with the embodiments of the present invention.

[0011] The preparation methods used in the present invention are all conventional methods unless otherwise specified.

[0012] Unless otherwise specified, the materials, machines, etc. used in the present invention can be obtained from commercial sources.

[0013] A method for preparing a high-fish protein feed, characterized in that it comprises the following steps: (1) using a meat grinder to grind fresh fish into fish paste, or using fish meal to make paste under the premise of ensuring the quality of fish meal; (2) mixing the fish paste with an appropriate amount of corn flour, wheat bran, fish oil, etc., and cooling after maturation to obtain a soft feed material. The wheat bran must be ground into powder before mixing, and the mixed slurry can be matured using a steamer, a rice noodle machine, a rice noodle machine, etc.; (3) fixing a clean stainless steel screen and a plastic disc, placing the plastic disc under the stainless steel screen, and placing the stainless steel screen horizontally on the plastic disc; (4) placing the soft feed material on the stainless steel screen and pushing, pulling and squeezing it back and forth to obtain a soft and wet granular base material, and paying attention to keeping the pushing, pulling and squeezing force balanced.

[0014] Furthermore, in step (1), the indoor temperature of the pulping room is controlled at about 22° C. The fresh fish is placed in ice water for pre-cooling before pulping. When the fish is put on the machine for mincing, it is minced several times until the fish bones are minced into fine pieces, or minced once and then ground into pulp using a pulping machine.

[0015] Furthermore, in step (2), adding Chinese herbal medicine can produce a functional feed with specific functions. The Chinese herbal medicine must be ground into powder or boiled into a medicinal soup before adding.

[0016] Furthermore, in step (3), the mesh size of the stainless steel screen can be adjusted according to the purpose and requirements of use to control the particle size of the soft and wet granular base material.

[0017] Furthermore, if the mesh size of the stainless steel screen cannot be adjusted, the force of pushing, pulling and squeezing can be adjusted in step (4) to increase or decrease the particle size of the soft wet granular base material. A swing granulator can be used instead of the stainless steel screen and manpower to produce the soft wet granular base material to improve efficiency and uniformity of the finished product. A wet granular feed machine can be used to make the feed soft material into wet granular feed of various specifications to make it more compact and not easily dissolved in water. The soft wet granular base material and the wet granular feed can be fed directly or dried before feeding or storage. After the soft wet granular base material is dried, it can be made into a sinking feed with a larger particle size and compactness by a flat die granulator. After the soft wet granular base material and the wet granular feed are dried, they can also be made into an expanded floating feed by a dry extruder.

[0018] The above description is only a preferred embodiment of the present invention and cannot be interpreted as limiting the scope of protection of the present invention. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a high-fish protein feed, characterized in that The following steps are involved: (1) Use a meat grinder to grind fresh fish into fish paste; (2) Mix the fish paste with an appropriate amount of corn flour, wheat bran, fish oil, etc., and then cool it after maturation to obtain a soft feed material; (3) Fix a clean stainless steel screen and a plastic disc, and place the plastic disc under the stainless steel screen; (4) Place the soft feed material on the stainless steel screen and push, pull and squeeze it back and forth to obtain a soft and wet granular base material.

2. The method for preparing a high fish protein feed according to claim 1, characterized in that: In step (1), the fresh fish should be placed in ice water to cool down before being pulped, and the fish should be minced several times until the fish bones are minced into fine pieces.

3. The method for preparing a high fish protein feed according to claim 1, characterized in that: Adding Chinese herbal medicine in step (2) can produce functional feed with specific functions.

4. The method for preparing a high fish protein feed according to claim 1, characterized in that: In step (3), the mesh size of the stainless steel screen can be adjusted to control the particle size of the soft and wet granular base material.

5. The method for preparing a high fish protein feed according to claim 1, characterized in that: In step (4), the push-pull extrusion force can be adjusted to increase or decrease the particle size of the soft wet granular base material. A swing granulator can be used instead of a stainless steel screen and manpower to make the soft wet granular base material. A wet granular feed machine can be used to make the feed soft material into wet granular feeds of various specifications. The soft wet granular base material and the wet granular feed can be fed directly or fed or stored after drying. After the soft wet granular base material is dried, a flat die granulator can be used to make a sinking feed. After the soft wet granular base material and the wet granular feed are dried, a dry extruder can be used to make an expanded feed.