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Reinforcing reagent formula and reinforcing method for drum starter feed

A technology of opening bait and totoaba, which is applied in animal feed, microcapsule preparation, climate change adaptation, etc. It can solve the problems of affecting the quality of rotifers, difficult to control the particle size of emulsion, suffocation of rotifers, etc., and achieve the purpose of inhibiting fat The growth of quality peroxide content, prolonging the effective storage period, and reducing the effect of toxic effects

Pending Publication Date: 2020-09-29
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of artificial breeding, the problem of low opening rate of larvae has been very serious. At the same time, the nutritional value of the two kinds of animals is too low, resulting in the death of a large number of larvae due to inability to eat in time or lack of nutrition, and the survival rate of larvae is very low.
Most of these fish oil products are made into emulsions containing a variety of unsaturated fatty acids and vitamins, but these emulsions are easily oxidized during storage, and the particle size of the emulsion is not easy to control, and it is easy to form on the water surface A layer of oil film will not only fail to strengthen nutrition, but also affect the quality of rotifers, and even cause rotifers to suffocate and die

Method used

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  • Reinforcing reagent formula and reinforcing method for drum starter feed
  • Reinforcing reagent formula and reinforcing method for drum starter feed
  • Reinforcing reagent formula and reinforcing method for drum starter feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of a totoaba bait strengthening reagent, comprising the following specific steps:

[0031] 1) Take emulsified soybean protein isolate and pregelatinized starch, add distilled water and mix evenly, place at a temperature of 45°C, stir and mix for 45 minutes, and wait until the milky liquid state is formed to obtain the wall material. The content of protein isolate is 12.5wt%, the content of pregelatinized starch is 20wt%, and the balance is water;

[0032] 2) Take fish oil, hydroxylated lecithin and tocopherol in a weight ratio of 4:1.5:0.5 and mix them evenly, then stir at 800rpm for 45min to obtain the core material;

[0033] 3) Take the wall material and the core material according to the ratio of 3.5:1 by weight, and after stirring for 30 minutes, add 4-ethyl-2-methoxyphenol and acid which are respectively 0.065% and 0.085% of the weight of the core material to the system Formula sodium aluminum phosphate, homogenized under 45Mpa pressure for 35...

Embodiment 2

[0037] In this example, the preparation method of the strengthening reagent is optimized in one direction, and the specific optimization measures are as follows: the core material also contains 1-1.5 wt% of broken-wall yeast powder, 0.5-1.5 wt% of triglyceride, sodium oleate 0.5-1wt%, Vitamin D 3 0.05-0.5 wt%. For example, the broken wall yeast powder is beneficial to regulate the beneficial microbial flora in the intestinal tract of animals, and has a natural fermented fragrance, which has a good food-attracting effect; vitamins and triglycerides can supplement vitamins and energy; sodium oleate can strengthen the gap between the core material and the wall material. of binding tightness.

[0038] The preparation method of the totoaba opening bait strengthening reagent in this embodiment is basically the same as that of Example 1, the difference is that:

[0039] In step 2), during the core material preparation process, 1.25wt% broken yeast powder, 0.75wt% triglyceride, 0.5...

Embodiment 3

[0041] The preparation method of the totoaba opening bait strengthening reagent in this embodiment is basically the same as that in Example 2, except that:

[0042] In step 1), the content of emulsified soybean protein isolate in the wall material is 10.5wt%, and the content of pregelatinized starch is 24.5wt%;

[0043] In step 2), fish oil, hydroxylated lecithin and tocopherol are taken in a ratio of 5.5:1:0.5 by weight to prepare the core material, and 1wt% broken-wall yeast powder, 1.05wt% triglyceride, 0.65wt% sodium oleate, 0.3wt% vitamin D 3 ;

[0044] In step 3), the intervention amounts of 4-ethyl-2-methoxyphenol and sodium aluminum acid phosphate in the initial homogeneous system are respectively 0.04% and 0.08% of the core material weight, and the homogeneous operating conditions are: the pressure is 40Mpa, the time is 45min;

[0045] In step 4), the content of α-amylase in the coating layer is 12.5wt%, and the content of tamarind gum is 52.5wt%;

[0046] In step...

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Abstract

The invention discloses a reinforcing reagent formula and reinforcing method for drum starter feed, and belongs to the technical field of marine animal seed breeding. A preparation method of the reinforcing reagent includes the following steps: preparing a wall material from emulsified soybean protein isolate and pregelatinized starch; preparing a core material from fish oil, hydroxylated lecithinand tocopherol; and then in the presence of 4-ethyl-2-methoxyphenol and acidic sodium aluminum phosphate, performing classified homogenization on the wall material and the core material to obtain a water-emulsified microcapsule agent, wherein the microcapsule agent also includes a coating layer formed by tamarind gum and alpha-amylase. The method can inhibit the increase of the content of lipid peroxide in the reagent, reduce the toxic effect of oxidized fat on the starter feed, increase the density of rotifers / artemia during the reinforcement period, increase the start rate of fries to 93% or above, and increase the feeding rate and fry survival rate. The reinforcing method comprises the following step of performing reinforcement operation with a reinforcing liquid of the reinforcing agent prepared by the method before the starter feed is used for feeding.

Description

technical field [0001] The invention belongs to the technical field of marine animal seed cultivation, and in particular relates to a totoaba opening bait strengthening reagent formula and a strengthening method. Background technique [0002] Drum is a general term for about 160 species of fish in the family Sciaenidae of the order Perciformes. This fish can call when it comes out of the water, glows at night, and has stones like chess pieces in its head, so it is called Shishouyu. Totoaba is generally benthic and carnivorous. Most of them are distributed in warm seas or tropical coasts, and a few live in temperate or freshwater waters. [0003] The opening bait of marine fish in the larvae stage can only use the tiny animal rotifers with a size of 200-300 μm and the next slightly larger Artemia nauplii (300-500 μm in size). In the process of artificial breeding, the problem of low opening rate of larvae has been very serious. At the same time, the nutritional value of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K20/111A23K20/147A23K20/158A23K20/163A23K40/00A23K50/80B01J13/06
CPCA23K50/80A23K20/147A23K20/163A23K20/158A23K20/111A23K40/00B01J13/06Y02A40/818
Inventor 谭朋徐冬冬陈睿毅王立改
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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