JP2002101827A - Feed for sea bream - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a substance capable of improving the growth of a sea bream and enhancing the feed efficiency. SOLUTION: It has been found out that the feed efficiency (conversion coefficient) can remarkably be improved by adding a dextran fermentation by-product to the feed for the sea bream.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a feed for Thailand.

[0002]

2. Description of the Related Art The aquaculture industry in Japan faces a number of challenges, such as a drastic decrease in sardine resources, which has been the main source of feed, competition with imported marine products, and conservation of fishing ground environments. Red sea bream culture is in the middle of that whirlpool.

[0003] As for the feed for red sea bream, the prevalence of compound feed has been high from the past, but since the raw feed has been drastically reduced in recent years,
In addition, the spread of solid feed is on the rise. The solid feed in the mixed feed accounts for about 46%, and the spread rate of the mixed feed of red sea bream is considered to be about 3/4 of the feed.

[0004] Therefore, the nutritional components of the compounded feed greatly affect the growth of red sea bream, but the conventional compounded feed cannot efficiently absorb the nutrients and does not exhibit its genetic growth ability sufficiently. In the situation. Therefore, there is a need for the development of a substance capable of maximizing the genetic growth ability of this organism and improving feed efficiency.

[0005]

SUMMARY OF THE INVENTION Improving the growth of Thailand,
The task is to develop substances that improve feed efficiency.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies in order to achieve the above object, and found that by adding dextran fermentation by-product to Thai feed, the feed efficiency (thickening factor) was remarkably improved. We found that it could be improved.

That is, the present invention provides (1) a feed for Thailand characterized by adding a dextran fermentation by-product, (2)
The feed according to (1), which is used for red sea bream, (3)
The present invention relates to a method for promoting the growth of Thailand by feeding a feed to which dextran fermentation by-product is added.

[0008] The dextran fermentation by-product in the present invention refers to "feed for pigs" previously filed by the present applicant (Japanese Patent Application No. 2000-90).
194) and `` Feed for livestock and poultry '' (Japanese Patent Application No. 11-85845), inoculate a lactic acid bacteria strain into a nutrient medium containing sucrose, It is a preparation derived from fermentation broth obtained by fermentation under conditions. The above-mentioned applications are aimed at reducing the growth of Escherichia coli and the like in the intestine and reducing the bacterial contamination of Salmonella and the like, respectively.

[0009] Examples of the preparation include a fermentation broth, a supernatant concentrate derived from the fermentation broth, and the like, and a product obtained by removing cells from the fermentation broth. The method for obtaining the supernatant is preferably performed by a fractional precipitation treatment.

[0010] The sucrose source in the above-mentioned "nutrient medium containing sucrose" includes not only isolated sucrose but also sucrose.
Examples include sugarcane and sugar beet pomace, molasses, and beet pulp. The components contained in the nutrient medium containing sucrose include brewer's yeast extract, soy protein, peptone, and the like.

As is clear from the examples described below, when feed containing the dextran fermentation by-product of the present invention is fed to red sea bream, feed efficiency and daily weight gain are significantly improved. This is thought to be due to the fact that the dextran fermentation by-product makes the intestinal function of red sea bream healthy.

However, although this effect appears in Thailand, other fish species, such as rainbow trout, have no effect such as feed efficiency or daily weight gain. This is considered to be based on the fact that the intestinal environment or nutrient metabolism differs depending on the fish species.

In general, fish meal is used as a main protein source of fish feed and fish oil is used as a main fat source. Dextran fermentation by-product has an effect of efficiently absorbing and assimilating nutrient components of these raw materials. Is to demonstrate. In other words, the addition of the dextran fermentation by-product to the feed can have the effect of significantly reducing the feed cost when culturing Thailand.

That is, a feature of the present invention is that by adding a small amount of dextran fermentation by-product to Thai feed,
The point is that it has been found that the absorption of feed is promoted, and the feed efficiency and the daily weight gain are significantly increased.

[0015] Also, by increasing the feed efficiency,
Not only the production cost is reduced, but also as a result of an increase in the absorption efficiency of proteins and fats in the feed, the release of these nutrients into seawater is reduced, and the secondary effect of reducing seawater pollution can be achieved. The addition rate of dextran fermentation by-product to Thai feed is generally 0.001-1.0%,
Preferably it is 0.005 to 0.2%.

The addition rate of dextran fermentation by-product M (powdered by adding 9 kg of glucose to 1 kg of liquid dextran fermentation by-product) is 0.01 to 10.0.
%, Preferably 0.05 to 2%. The form of the feed is not particularly limited, not only pellets and crumbles,
Moist pellets (formed by mixing raw bait and mash) and single moist pellets (formed by mixing water only with mash) may be used.

As a method for adding the dextran fermentation by-product to the feed, in the case of pellets or crumble, the dextran fermentation by-product is mixed with an emulsifier and a liquid oil (vegetable oil such as soybean oil, palm oil, animal oil such as fish oil, chicken oil, etc.). (Which may be fats and oils, etc.) to form a w / o emulsion, after-coating into molded and dried pellets or crumbles, a method of pre-mixing with raw material mixed powder before molding and molding or molding Any method may be used, such as a method in which the mixture is charged into a conditioner immediately before a molding machine or a molding machine.

The method of addition in the case of moist pellets or single moist pellets is as follows.
(Powder) It may be mixed with feed, and in the case of moist pellets, it is put in at the same time as raw feed and mash are put into the mixer, and in the case of single moist pellets, it is put in at the same time as mash and water are put into the mixer. You may.

In the present invention, "Thai" means red sea bream,
It includes Thai fish such as sea bream, black sea bream, and sea bream, and has the same effect as red sea bream. Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Example 1) Using red sea bream,
The effect of dextran fermentation by-product supplemented feed on rearing performance was examined. Set the test area in Table 1 and set 50 × 30 ×
Two 45-cm tanks were allocated to each ward. Water injection amount is 10
Aeration was performed at 0 liter / hour. The red sea bream used about 5 g of fry and housed 20 fish per aquarium. The breeding water temperature during the test period was 20-21 ° C.
Feeding was performed three times a day. The test period was 20 days.

As the basic feed, expanded pellets having the composition and component values shown in Table 2 were used. Dextran fermentation by-product M was used as the dextran fermentation by-product added to the feed. Table 3 shows the components of dextran fermentation by-product M. A predetermined amount of dextran fermentation by-product M was dissolved in 2% of the weight of the basal feed, and this solution was spray-adsorbed to the basal feed to prepare a test feed. The control group was sprayed with water alone at 2%.

[0022]

[Table 1] Setting of test section 1 section (control section) basal feed 2 section basal feed + dextran fermentation by-product M 0.25% (outside percent) 3 section basal feed + dextran fermentation by-product M 0.50% (outside rate)

[0023]

[Table 2] Composition and component values of basic feed Fish meal 62.0% Flour 20.0% Soybean oil cake 11.5% Fish oil 2.5% Vitamin mix 2.0% Mineral mix 2.0% Crude protein 50.0% 8.0% crude fat

[0024]

[Table 3] Ingredient of dextran fermentation by-product M Loss on drying 9.5% Glucose 79.0% Fructose 4.0% Oligosaccharide 2.5% Others 5.0%

The results are as shown in Table 4. In other words, both the corrected feed efficiency and the daily weight gain were best in section 2 (dextran fermentation by-product M 0.25%), followed by section 3 (dextran fermentation by-product M 0.50%),
The order was 1 section (control section), and the effect of adding the dextran fermentation by-product was observed.

[0026]

Table 4 Test plot Corrected feed efficiency (%) Daily weight gain (%) Survival rate (%) 1 plot (control plot ) 47 40 2.26 1.91 90 95 2 plot 77 67 3.26 2.94 95 95 3 plot 56 60 2.62 2.68 90 95 Note) Corrected feed efficiency: (corrected weight / feed amount) x 100 Corrected weight gain: weight gain + dead weight Daily weight gain: (corrected weight gain / number of breeding days) x 100 / average weight during the period

Example 2 A breeding test was performed to confirm the reproducibility of Example 1 and the optimal addition rate of dextran fermentation by-product M. A red sea bream with an average body weight of about 12 g was tested. In the test feeds in the second and third sections, the addition rate (outside ratio) of the dextran fermentation by-product M was 0.125%,
The conditions were the same as in Example 1 except that the test period was 15 days and the water temperature during the test period was 21 to 23 ° C. Table 5 shows the test plot settings.

[0028]

[Table 5] Setting of test section 1 section (control section) Basic feed 2 section Basic feed + dextran fermentation by-product M 0.125% (outside percent) Section 3 basic feed + dextran fermentation by-product M 0.25% (outside rate)

Table 6 shows the results. The corrected feed efficiency and the daily weight gain were 56% and 1.1%, respectively, in one section (control section) and 2 sections (dextran fermentation by-product M
5%) were 76% and 1.6%, respectively, and the three sections (dextran fermentation by-product M 0.25%) were 66% and 1.4%, respectively. That is, as in Example 1, it was reconfirmed that the feed M with dextran fermentation by-product remarkably improved the rearing performance of red sea bream, and it was found that the optimum addition rate was around 0.1%.

[0030]

[Table 6] Test plot Corrected feed efficiency (%) Daily weight gain (%) Survival rate (%) 1 plot (control plot ) 52 59 1.08 1.16 90 95 2 plot 89 63 1.76 1.40 95 95 3 plot 70 61 1.42 1.41 90 95 Note) Corrected feed efficiency: (corrected weight / feeding amount) x 100 Corrected weight gain: weight gain + dead weight Daily weight gain: (corrected weight gain / number of breeding days) x 100 / average body weight during the period

Example 3 A breeding test was carried out using rainbow trout to confirm whether the dextran fermentation by-product was effective for other fish species. Test plots were set as shown in Table 7.
That is, with the first section as a control, the external addition rates of dextran fermentation by-products in the second, third, and fourth sections were 0.1% and 0.2%, respectively.
% And 0.5%. 30 rainbow trout fry with an average body weight of about 5 g were housed in a glass tank of 60 × 30 × 35 cm, and raised under running water under aeration. The test period was 42 days, during which the water temperature was 16-17 ° C. One aquarium was allocated per ward.

As the basic feed, commercially available expanded pellets ("Masu EPSS", manufactured by Nippon Nosan Kogyo Co., Ltd., crude protein guaranteed value: 46%, crude fat guaranteed value: 5%) were used.
The method of adding the dextran fermentation by-product M is the same as in Example 1.

[0033]

[Table 7] Setting of test section 1 section (control section) Basic feed 2 section Basic feed + dextran fermentation by-product M 0.1% (outside percent) Section 3 basic feed + dextran fermentation by-product M 0.2% (outside rate) 4 Ward Basic feed + Dextran fermentation by-product M 0.5% (outside discount)

The results are as shown in Table 8. Feed efficiency and daily weight gain were 100.
0% and 1.79%, respectively, compared to 10% in 2 sections.
0.2%, 1.78%, 96.3%, 1.
73% and 96.9% and 1.73%, respectively, in the fourth section. From this result, it became clear that the dextran fermentation by-product M did not contribute to the improvement of the rearing performance of rainbow trout.

[0035]

Table 8 Test plot Feed efficiency (%) Daily weight gain (%) Survival rate (%) 1 plot (control plot) 100.0 1.79 100 2 plot 100.2 1.78 100 3 plot 96. 3 1.73 100 4 section 96.9 1.73 100 Note) Feed efficiency: (increased weight 量 feeding amount) × 100 day weight gain: (increased weight ÷ breeding days) × 100） average body weight during the period

[0036]

By feeding a feed containing dextran fermentation by-product according to the present invention to Thailand, feed efficiency (thickening factor) is improved, and as a result, the production cost of cultured Thailand can be significantly reduced. Was.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Kondo 260-1 Nakaizumi, Iwata-shi, Shizuoka Oriental Plaza 206 (72) Inventor Takao Ogawa 35-6 Shinoda Minamidaimon, Miwa-cho, Kaifu-gun, Aichi Prefecture (72) Inventor Kimio Hirose 1-433, Awanonishi, Gifu City, Gifu Prefecture (72) Inventor Kenji Yasuda 2-50 Marunouchi, Ogaki City, Gifu Prefecture Passage Ogaki 902 (72) Inventor Kyoji Kito 701 Bentengaoka, Moriyama-ku, Nagoya City, Aichi Prefecture Omoridai Housing 2-404 F-term (reference) 2B005 GA01 MA08 2B150 AA08 AB01 AB02 AB20 DD26

Claims (3)

[Claims] 1. A feed for Thailand to which a by-product of dextran fermentation has been added. 2. The feed according to claim 1, which is for red sea bream. 3. A method for promoting the growth of Thailand by feeding a feed to which a dextran fermentation by-product has been added.