A kind of algal compound protein mixture and application of replacing fishmeal in aquatic feed

A compound protein and mixture technology, applied in the field of algae-derived compound protein mixture, can solve the problems of nutritional content, palatability and digestibility differences, poor balance of amino acid composition, etc., and achieve improved feed conversion efficiency, good palatability, and improved The effect of deposition rate

Active Publication Date: 2021-09-24
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although related work has been carried out for many years, there are still obvious shortcomings in the development of alternative protein sources: for most cultured species, other protein sources can replace up to 50% of fish meal in feed
In short, blood meal is a feed with high protein content, but its amino acid composition is poorly balanced, and due to different processing methods, its nutritional content, palatability and digestibility are quite different.

Method used

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  • A kind of algal compound protein mixture and application of replacing fishmeal in aquatic feed
  • A kind of algal compound protein mixture and application of replacing fishmeal in aquatic feed
  • A kind of algal compound protein mixture and application of replacing fishmeal in aquatic feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Application of an algae-derived complex protein mixture in the preparation of aquatic feed:

[0031] The preparation of the algae-derived compound protein mixture is obtained by mixing spirulina powder, blood meal and kelp residue in a mass ratio of 6:2:2, and the crude protein content of the algae-derived compound protein raw material is 65.18%.

[0032] Control feed: the crude protein content of the control feed was 34.82%, and the crude fat content was 8.59%.

[0033] The control feed used 10% fish meal, 35% soybean meal and 20% rapeseed meal as the protein source, 3.36% fish oil and 3.36% soybean oil as the main fat source, 13% flour as the main carbohydrate source, and inorganic salt premixed The consumption of the compound is 5%, the consumption of the vitamin premix is ​​0.5%, 3% sodium carboxymethyl cellulose is used as a binder, and 6.78% of microcrystalline cellulose is used as a filler, and the above percentages are all percentages by mass.

[0034] Test gro...

Embodiment 2

[0053] Application of an algae-derived complex protein mixture in the preparation of aquatic feed:

[0054] Control group feed is identical with embodiment 1,

[0055] The diet of the test group is 11.2% algae-derived compound protein instead of 10% fish meal in the control feed (the amount of fish meal is zero), using 3.82% fish oil and 3.82% soybean oil as the main fat source, and the remaining ingredients and composition are the same as those of the control feed. Similarly, the composition of the feed formula was maintained at 100% by adjusting the content of cellulose.

[0056] The experimental feed and the control feed were equal to nitrogen and equal to fat.

[0057] Growth test: carried out in river net cages (2m×2m×2m, underwater depth about 1.7m) in the original breeding ground of the four major fishes of the Yangtze River in Laohe, Shishou City. During the experiment period (August 8, 2015 to September 25, 2015), natural light was used, the water temperature was 28...

Embodiment 3

[0064] Application of an algae-derived complex protein mixture in the preparation of aquatic feed:

[0065] Control group feed is identical with embodiment 1,

[0066] The diet of the test group replaced 10% fish meal (the amount of fish meal was zero) and 17.5% soybean meal (the amount of soybean meal was halved) in the control diet with 24.1% algae-derived compound protein, and 3.83% fish oil and 3.83% soybean oil (w / w=1:1) was the main fat source, and the other ingredients and compositions were the same as those of the control group. The composition of the feed formula was maintained at 100% by adjusting the content of cellulose. The experimental feed and the control feed were equal to nitrogen and equal to fat.

[0067] Growth test: carried out in river net cages (2m×2m×2m, underwater depth about 1.7m) in the original breeding ground of the four major fishes of the Yangtze River in Laohe, Shishou City. During the experiment period (August 8, 2015 to September 25, 2015), n...

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Abstract

The invention belongs to the technical field of aquatic compound feed, and specifically discloses an algae-derived compound protein mixture that replaces fish meal in aquatic feed and its application. The invention mixes spirulina powder, blood meal and kelp residue in an effective ratio to form a algae Source compound protein raw material, using this compound protein raw material to replace 50% fish meal, 100% fish meal, 100% fish meal + 50% soybean meal in crucian carp feed, can reduce the use of fish meal in aquatic feed, and can effectively promote Growth, improve feed protein efficiency and fish protein deposition rate, improve fish body color, so as to obtain better breeding benefits.

Description

technical field [0001] The invention relates to the technical field of aquatic feed, and more particularly relates to an algae-derived compound protein mixture that replaces fish meal in aquatic feed. Background technique [0002] my country is the only aquaculture superpower in the world, and its aquaculture production accounts for 70% of the world's total. Aquatic products have accounted for 1 / 3 of my country's protein food consumption. In recent years, the aquaculture industry has grown at an average annual rate of more than 10%. In 2016, the aquaculture output reached more than 51.42 million tons. Aquatic product exports occupy the first place in my country's agricultural product exports: in 2016, the export volume was 4.2376 million tons, and the export value reached about 20.7 billion US dollars, accounting for 28.41% of the total agricultural product exports (72.99 billion yuan) (2017 China Fishery Statistical Yearbook). It has made important contributions to increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K50/80A23K10/24A23K10/16A23K10/37
CPCA23K10/16A23K10/24A23K10/37A23K50/80Y02P60/87Y02A40/818
Inventor 朱晓鸣曹申平韩冬解绶启聂光汉杨云霞刘昊昆金俊琰
Owner INST OF AQUATIC LIFE ACAD SINICA
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