JP2847295B2 - How to feed fish farm feed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to appreciation of tropical fish such as discus and guppy, freshwater fish such as goldfish and carp, and saltwater fish such as butterflyfish and sparrows reared in a closed environment. The present invention relates to a fish feed for fish and a feed method for feeding animals such as fish, shellfish, amphibians, and reptiles.

(Prior art) Conventionally, for example, tropical fish such as discus and guppy, and freshwater fish such as goldfish and eel, which are bred in a closed environment as described above,
As a feed for fish farming such as appreciation fish such as seawater fish such as butterflyfish and damselfish, fish eat and feed under natural environment,
Generally, live foods with good attraction / preference and nutritional satisfaction are generally available, but the types of live foods that can always be supplied are limited, there is a bias in nutrients, and the effects on the body color of fish and the health Not enough.

Therefore, artificial feed is used in consideration of nutritional requirements, effects on body color, and the like. As such artificial feed, a dry blended feed such as flakes, granules, pellets or powder, or a frozen blended feed frozen in a block form using raw materials such as cow heart and liver as main raw materials is used. ing.

(Problems to be Solved by the Invention) However, the dry blended feed as the feed for fish farming described above has a disadvantage that proteins and vitamins are denatured or depleted in the drying and processing steps, resulting in poor attraction and palatability. . In addition, frozen mixed feed is a raw material that is a raw material, and therefore has a high water content and poor shape retention in water. There is a disadvantage that the feed is eluted to pollute the inside of the aquarium or deteriorate the water quality.

In addition, artificial feed does not take into consideration the feeding habits of the target animal and the manner of feeding in the natural environment, and any of the flakes, granules, pellets, powders, or blocks described above may be used in natural environments. In particular, paste-like and block-shaped feeds are more fragmented in water if thinned to fit the size of the target fish's mouth. There is an inconvenience that it is pealed and separated.

An object of the present invention is to provide a method of feeding a feed which is excellent in nutrition and attraction / preference and has improved feeding efficiency.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention contains an annelid, an aquatic insect, an extract of zooplankton and / or a dried product thereof as a nutritional supplement and an attraction supplement in fish feed. Use what you have done.

Raw materials for the fish feed used in the present invention include, for example, ground fish and shellfish and fish meat mash. Examples of the ground fish products include squid meat, krill meat, and oyster meat. Examples of the fish species used as the fish meat rub include walleye pollock, bitter gourd, elephant fish, flying fish, shark, and the like, and preferably use white fish. The ratio (weight ratio) of the crushed fish and shellfish meat is 2:
It is preferably in the range of 1 to 1: 2, and if it exceeds this range, the caking property may be lost or it may be too hard.

The feed for fish farming used in the present invention may be supplemented with nutritional supplements such as crushed fish offal, egg yolk, livestock and poultry liver, and dried products thereof. This nutritional supplement is added to, for example, a well-mixed and stirred mixture of the above-mentioned ground fish and shellfish and the fish meat rub. The amount of the nutritional supplement is preferably in the range of 3 to 30% by weight, more preferably about 5 to 15% by weight. If the added amount is less than 3% by weight, the effect as a nutritional supplement will not be exhibited, and if the added amount exceeds 30% by weight, the caking property of the whole feed will be impaired and the feed will disperse in water. There is.

Further, to the feed for fish farming used in the present invention, oils and fats containing highly unsaturated fatty acids such as squid refined oil, cod liver oil, and sardine refined oil can be added as an attractant aid. The amount of the fat or oil is preferably in the range of 0.1 to 5% by weight. If the amount of the fat or oil is less than 0.1% by weight, the effect is small, and if the amount exceeds 5% by weight,
Since these fats and oils are easily oxidized, oxidation of the whole feed is promoted and quality deterioration is easily caused.

In the feed for fish farming used in the present invention, an extract of annelids, aquatic insects, or zooplankton and / or a dried product thereof is added for nutritional supplementation and attraction / preference improvement.

Annelids include earthworms, earthworms, earthworms, etc., aquatic insects include midges, turtles, kawagera and their larvae, and zooplankton include artemia, daphnia, rotifers, etc. be able to.

The drying treatment for producing these dried products is preferably a drying treatment that avoids heat treatment as much as possible, for example, a drying treatment at a temperature that does not cause protein denaturation such as freeze-vacuum drying and freeze-drying, Hot air drying is not very suitable.

In addition, the amount of these annelids, aquatic insects or zooplankton extract and / or dried matter thereof is as follows:
The range is preferably from 0.1 to 10% by weight, more preferably from 0.5 to 10% by weight.
It is in the range of 3% by weight. If the added amount is less than 0.1% by weight, the effect of attraction / preference improvement will not be sufficiently exerted. If the added amount exceeds 10% by weight, the water content will increase if the extract is added. When the caking property is reduced and the dry matter is added, the feed may become too hard.

Further, vitamins and minerals can be added to the fish feed for use in the present invention. It is preferable that the feed for fish farming used in the present invention is frozen and stored immediately after generation, and when feeding, it is sufficient to thaw the food after thawing it.

Next, according to the present invention, the feed is filled in an extrusion container having a nozzle attached to the tip, and the feed is extruded from the nozzle tip into the extrusion container and fed to the fish.

Examples of the extrusion container used in the present invention include a syringe and the like. The nozzle has a circular shape whose opening is simulated to a ring-shaped animal.

Furthermore, the feed for fish farming used in the present invention is the feed for fish farming described above, which has a certain degree of caking properties, and maintains its shape without being easily disintegrated when extruded from a nozzle. . The filling operation is facilitated by forming the feed in advance so as to match the shape of the container.

Further, the objects to be fed by carrying out the present invention include fish, reptiles (turtles and the like), and amphoteric species (newts and the like).

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an explanatory view showing an example of an extrusion container used in the second invention.

The extrusion container 1 includes a cylinder 2 and the cylinder 2
It has a piston 3 which is in sliding contact with the inner peripheral surface, a nozzle 4 at the tip of the cylinder 2, and a push rod 5 attached to the piston 3.

After the feed 6 is filled in the cylinder 2 of the extrusion container 1, the piston 3 is pushed by the extrusion rod 5, so that the feed feed 7 in a form simulated as a ring-shaped animal without dispersing in water from the tip nozzle 4. Is extruded.

In addition, as the extruding container, in addition to the container including the piston and the cylinder as described above, for example, a container in which a nozzle is attached to a tip portion of a bag-shaped container can be used.

Examples and Comparative Examples The following feeding breeding test was performed using the feeding method according to the present invention (hereinafter, referred to as “Example”) and the conventional feeding method (hereinafter, referred to as “Comparative Example”).

[Feeding Feeding Test] Feed: A feed for fish farming prepared by mixing the following 1 to 8 and kneading with 1.5 times water was used.

1. Coastal fish meal ... 60% by weight 2. Dried shrimp powder ... 15% by weight 3. Dried pupal powder ... 7% by weight 4. Rice sugar ... 3% by weight 5. Chlorella powder ... 2% by weight 6. Dried earthworm powder ... 2% by weight 7. Alpha starch powder: 9% by weight 8. Gua gum: 2% by weight Test animals: 5 tiger baltanagos (amphibians). In addition,
The Tyrrh Balatago was collected from the field (natural world).

Water tank: A 60 cm water tank (60 × 35 × 29 cm) was used, sand was put on the bottom, and a bottom filter was installed.

Feeding method In the example, the feed was filled in a syringe (cylinder inner diameter 12 mm, length 55 mm, nozzle length 10 mm, nozzle diameter 1 mm) as an extrusion container, and the piston was pushed to release the ring-shaped animal without dislodging in water from the nozzle tip. And the animals were fed into the aquarium.

In the comparative example, the above-mentioned feed was made into a dumpling and was directly fed into an aquarium.

As a result of conducting the above-described breeding test, when feeding was started three days after storing the sea cucumber locust in the aquarium, the sea cucumber turtle fed by the example was actively fed from the first day. The fed turtle, which was fed according to the examples, ate little at first, and it took another six days to get used to the feed and to actively feed it.

As can be seen from the results, feeding the annelid animal by the method of the second invention in the case of the animal ingesting the animal according to the second aspect of the present invention provides good attraction because there is no uncomfortable sensation, and makes it easier to get used to the feed. Efficiency is improved.

(Effects of the Invention) As described above, according to the present invention, a feed for fish culture contains an annelid, an aquatic insect or zooplankton extract and / or a dried product thereof as a nutritional supplement and an attraction supplement, Feed is filled in an extrusion container having a nozzle attached to the tip, and the feed is extruded and fed from the nozzle end of the extrusion container in a form simulating an annelid animal without dispersing in water. Excellent in nature,
Feeding rate is improved and feed efficiency is improved, and it is difficult to disperse in water and the like, and dirt in a water tank and the like is reduced, and feed rate is improved and feed efficiency is improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view common to the embodiment of the present application, and 1 in FIG.
Is an extrusion container, 2 is a cylinder, 3 is a piston, 4 is a nozzle, and 6 and 7 are feed.

Claims (1)

(57) [Claims] (1) The ratio of the ground fish and the ground fish meat is 2: 1 to
A feed for fish farming having caking properties in which 0.1 to 3% by weight of an anthropomorphic dry powder as a nutritional supplement and a trigger supplement was added to a 1: 2 feed, and one nozzle was attached to the tip. A method of feeding a feed for fish farming, characterized in that the feed is filled in an extrusion container, and the feed is extruded from a nozzle tip of the extrusion container in a form imitating an annelid animal without dispersing in water.