Saltwater fish compound feed taking microalgae flour as fat source and processing method thereof

A compound feed and processing method technology, applied in animal feed, animal feed, application, etc., can solve the problems of lack, reduction of fish nutritional value, slow growth of fish, etc., to reduce the loss of nutrients, excellent sedimentation speed, improve The effect of nutritional value

Inactive Publication Date: 2013-06-19
AQUATIC PROD RES INST SHANDONG PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vegetable oil is the best choice to replace fish oil due to its wide source, large yield and rich fatty acid content. Greatly limit its use in marine fish feed
Seawater fish, especially the juveniles of seawater fish, are mostly carnivorous and have high requirements for essential fatty acids. If a large proportion of vegetable oil is used instead of fish oil, ...

Method used

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  • Saltwater fish compound feed taking microalgae flour as fat source and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The seawater fish compound feed processed in this example is specially made for the early juveniles of seawater flounder fish, and two kinds of algae powders of Schizochytrium algae powder and Nannochloropsis algae powder are added as fat sources, specifically as follows The composition of raw materials in parts by weight: 40 parts of fish meal, 10 parts of casein, 4 parts of gluten, 13 parts of α-starch, 5.25 parts of microcrystalline cellulose, 0.5 part of thiobetaine, 9 parts of Schizochytridium algae powder, 13.5 parts of Nannochloropsis algae powder, 0.5 parts of sodium carboxymethylcellulose, 0.05 parts of antioxidant, 0.2 parts of choline chloride, 1.5 parts of multivitamins, and 1.5 parts of multivitamins.

[0036] The processing method of the present embodiment seawater fish compound feed comprises the following steps:

[0037] 1) First, cell wall breaking of the microalgae powder: the microalgae powder is vacuum freeze-dried at -50°C for 24 hours, and the drie...

Embodiment 2

[0046] The seawater fish compound feed of the present embodiment using microalgae powder as a fat source differs from Example 1 in that:

[0047] The compound feed consists of the following raw materials in parts by weight: 30 parts of fish meal, 11 parts of casein, 4 parts of soybean protein concentrate, 3 parts of gluten powder, 15 parts of α-starch, 6.5 parts of microcrystalline cellulose, and 0.8 part of thiobetaine , 6 parts of Schizochytrium algae powder, 10 parts of Nannochloropsis algae powder, 0.4 part of sodium carboxymethylcellulose, 0.03 part of antioxidant, 0.3 part of choline chloride, 1.0 part of multivitamin, 2.0 part of multivitamin .

[0048] The processing method of seawater fish compound feed in this embodiment, its step 3) is

[0049] 3) Pulverization: Mix the fishmeal, casein, soybean protein concentrate, gluten, α-starch, microcrystalline cellulose, and microalgae powder weighed in step 2) for the first time, and then coarsely pulverize them. Coarse cr...

Embodiment 3

[0051] The seawater fish compound feed of the present embodiment using microalgae powder as a fat source differs from Example 1 in that:

[0052] The compound feed consists of the following raw materials in parts by weight: 35 parts of fish meal, 8 parts of casein, 3 parts of soybean protein concentrate, 4.5 parts of gluten, 12 parts of α-starch, 8 parts of microcrystalline cellulose, and 0.6 part of thiobetaine , 8 parts of Schizochytrium algae powder, 8 parts of Nannochloropsis algae powder, 0.6 part of sodium carboxymethylcellulose, 0.02 part of antioxidant, 0.15 part of choline chloride, 0.8 part of multivitamin, 2.5 part of multivitamin .

[0053] The processing method of seawater fish compound feed in this embodiment, its step 3) is

[0054] 3) Pulverization: Mix the fishmeal, casein, soybean protein concentrate, gluten, α-starch, microcrystalline cellulose, and microalgae powder weighed in step 2) for the first time, and then coarsely pulverize them. Coarse crushing f...

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Abstract

The invention relates to a saltwater fish compound feed taking microalgae flour as a fat source and a processing method thereof, belonging to the technical field of aquaculture feed processing. The saltwater fish compound feed comprises the following raw materials in parts by weight: 20-40 parts of fish flour, 5-12 parts of casein, 0-5 parts of soybean protein concentrate, 3-8 parts of gluten flour, 10-15 parts of alpha-starch, 5-10 parts of microcrystalline cellulose, 0.4-0.8 part of sulfobetaine, 5-24 parts of microalgae flour, 0.4-0.6 part of sodium carboxymethyl cellulose, 0.02-0.06 part of antioxidant, 0.1-0.3 part of choline chloride, 0.8-1.6 parts of composite vitamin and 1.2-2.5 parts of composite mineral. The processing method comprises the following processing steps: 1) performing wall-breaking on the microalgae flour; 2) preparing the raw materials; 3) pulverizing; 4) performing secondary mixing; 5) blending; 6) granulating through an extrusion bulking machine; 7) drying; and 8) cooling and packaging. According to the invention, the formula is scientific; the process is reasonable; the ratio of the microalgae flour in the compound feed is increased; and the feed can satisfy nutrition required for growth of saltwater fish and can completely replace a saltwater fish compound feed taking fish oil as a fat source.

Description

technical field [0001] The invention relates to a seawater fish compound feed using microalgae powder as a fat source and a processing method thereof. Specifically, microalgae powder rich in high unsaturated fatty acids is used instead of fish oil to produce seawater fish compound feed, which belongs to the technical field of aquaculture feed processing . Background technique [0002] Fish oil is often used on a large scale as the main fat source of aquatic animal compound feed due to its rich high unsaturated fatty acids (mainly including DHA and EPA). In recent years, with the expansion of my country's aquaculture scale, the demand for fish oil has increased sharply. However, fish oil mainly comes from fresh trash fish obtained from marine fishing. With the deterioration of the global marine environment, the amount of marine fishing continues to decline. Therefore, the price of fish oil Also rising, leading to continuous rise in feed costs. People have been looking for ot...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/14
Inventor 王际英乔洪金黄炳山张利民王世信李华东
Owner AQUATIC PROD RES INST SHANDONG PROV
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