SU1433441A1 - Method of preparing fodder for young carps - Google Patents

Abstract

The invention relates to the fishing industry, in particular to methods of preparing feed for juvenile carp fish. The aim of the invention is to improve the nutritional value of the feed and the most acceleration of growth and increase in winter hardiness of fish stock. In the preparation of food pick up the ingredients, while instead of fish meal take the product of microbiosynthesis. Before mixing the ingredients, an additive of trace elements selenium and iodine is introduced into the composition, which is prepared by dissolving the salts of these elements in the gel former, followed by mixing with hydrolysis yeast, drying and crushing, while the content of selenium and iodine in the feed is 0.03- 0.06 and 1.2-1.6 mg / kg, respectively. (L

Description

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The invention relates to fish farming, in particular to methods for preparing feed for juvenile carp fish. : The aim of the invention is to improve the nutritional value of the feed and thereby accelerate the growth and increase the winter hardiness of the fish stock. -; The method is carried out as follows.

I B The composition of the feed for carp youngsters is to introduce soybean meal, sunflower meal, wheat — pea, bran, hydroelectric yeast, chalk, and instead of fish uki they introduce a microbiosynthetic product, for example, paprin. Then, micro- and lemr-nty selenium and iodine are introduced. The salts of sodium and potassium selenite are used as wastewater of these microelements, which before the introduction of 1 feed are pre-dissolved in the gel solution with starch or gelatin used as gel agent. The resulting mass is mixed with a filler, in which jiecTBe use hydro-lyse yeast. Subsequently, the semi-dried product is dried and crushed. A uniform distribution of microelements is achieved. A prepared 1 || additive of trace elements is injected into the feed in an amount that provides the content of selenium and iodine in the form 0.03-0.06 mg / kg and 1.2-1.6 mg / kg, respectively.

; Ingredients with mixed feed Mix, granulate and use for feeding juvenile carp fish.

The addition of trace elements selenium and iodine to the feed allows the fish meal to be replaced with any product of microbiosynthesis, the production of fingerlings increases, the wintering losses are reduced by increasing the yield and reducing the waste of endogenous fish stocks during the winter starvation. Along with this, the aftereffect of the addition of selenium with iodine manifests itself in accelerating the growth of two-year periods. The doses of microelements were chosen taking into account their effect on the growth of fingerlings. When smaller amounts of microelements are introduced into the feed - (; the weakening effect is weak, the use of higher dosages leads to inhibition of fish growth,. Introduction, microelements in the solution of gelling agents contribute to their

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more evenly distributed inside the additive, but it also plays a protective role - salt molecules of microelements are adsorbed on the molecules of high molecular weight substances and enveloped in them, which prevents leaching of easily soluble salts when the feed gets into water.

Example 1. In the preparation of food select the components (instead of fish meal take the product of microbiosynthesis) in the following ratio,%: soybean meal 5, sunflower meal 20,

5 wheat 40, peas 10, paprin 16,

bran 4, hydrolysis yeast 3, chalk 1. Before mixing the components, an additive of microelements is prepared. For this take sodium selenite and iodide

0 potassium, dissolved in a solution of gelatin and the solution is mixed with hydrolysis yeast, while taking the salt per kilogram of filler; sodium selenite 5 mg and potassium iodide

5 156 mg. The resulting mass is dried and crushed. Then, in the amount of 1%, the concentration of selenium and iodine in terms of all feed corresponds to 0.03 mg / kg and 1.2 mg / kg, respectively.

Ready food was given to young carp. Fish contain at t 23-25 C, 30 days. After the cultivation period was over, carp were fasted for 640 degrees / day (simulated winter starvation). As a result, when planting fingerlings with an initial weight of 8.0 g, the final weight is 14.3 g, the relative increase is 78.8%, the specific growth rate is 1.9%, the feed cost is 2.6, the relative loss during starvation of the mass is 14.0%, dry matter 29.5%, protein 22.2%, energy 31.6%. Example 2. Feed is prepared analogously to example 1, with an amount of selenium 0.06 mg / kg feed, iodine 1.6 mg / kg, for this sodium selenite take 10 mg, and potassium iodide 208 mg per 1 kg of hydrolysis yeast.

The juvenile carp was fed 30 days followed by starvation 640 degrees / day (winter starvation). As a result, with the initial mass of larvae of 8.0 g, the final mass was 14.5 g, the relative increase was 81.6%, the specific growth rate was 2.0%, the feed cost was 2.6, the relative loss during starvation of the mass was 14.2%, dry

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substance 29.3%, protein 22.2%, energy 30.9%.

Example 3. Feed. Prepared analogously to example 1, except that sodium selenite (0.10 mg / kg) is injected into the feed, which corresponds to 0.06 mg of selenium per 1 kg of feed. The juveniles were fed similarly to example 1, as a result, with an initial weight of 8.0 g, the final weight was 12.8 g, an increase of 59.6%, a specific growth rate of 1.5%, feed costs | 2.9, relative weight loss at

fasting 14.9%.

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The data show that when one selenium is included in the feed, the fish-bearing indicators are lower than when feeding fish with feed in which selenium was introduced together with iodine.

Claims (1)

Invention Formula The method of preparing food for juvenile carp fish, including the mixing of microbiosynthesis products, is used as fish meal replacers and other feed components with the introduction of sodium selenite, characterized in that Q In order to improve the nutritional value of the feed and thereby accelerate the growth and increase the winter resistance of the fish stock, potassium iodide, sodium selenite and iodide are additionally introduced into the feed. 5 potassium, before introducing the feed ingredients into the composition, are predissolved in the solution of the gelling agent, mixed with d) monolith yeast, dried and crushed, while iodide 0 Potassium and sodium Selenite are introduced into the feed in an amount that provides the content of selenium and iodine in the feed 0.03-0.06 mg / kg and 1, 2-1, 6 mg / kg, respectively.