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A DHA-enriched freshwater fish feed
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A technology for freshwater fish and feed, applied in the field of freshwater fish feed, can solve the problems of declining annual output of fishmeal, unbalanced supply and demand of high-quality feed protein sources, etc., and achieve the effects of improving survival rate and growth rate, promoting intestinal absorption and wide-ranging sources.
Active Publication Date: 2020-07-10
广州品悦生物科技有限公司
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Abstract
Description
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Problems solved by technology
The scale of aquaculture in the world is growing at an annual rate of 11%, but the annual output of global fishmeal is declining. In recent years, the annual output of fishmeal has only been maintained at 6-7 million tons, resulting in an imbalance between the supply and demand of high-quality feed protein sources
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Examples
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Effect test
Embodiment 1
[0018] A freshwater fish feed rich in DHA nutrition, prepared from the following raw materials in parts by weight: 25 parts of peanut meal, 20 parts of soybean meal, 8 parts of soybean protein concentrate, 5 parts of Schizochytrium powder, and 20 parts of Schizochytrium waste residue natto, 3 parts of bacillus natto, 0.8 part of yeast extract, 2 parts of non-starch polysaccharidase, and 15 parts of corn germ oil; the Schizochytrium waste residue is the material after the Schizochytrium extracts DHA.
[0019] The preparation method of the freshwater fish feed comprises the following steps: (1) Weighing peanut meal and soybean meal by weight, fully mixing them, crushing them to 80 mesh, adding water and part of yeast extract and fermenting at 27°C for 6 hours; (2) weighing Parts of Schizochytrium, Schizochytrium waste residue, and Bacillus natto are mixed, and then the remaining yeast extract is added for shaking table fermentation; (3) The materials processed by steps (1) and (2...
Embodiment 2
[0022] A kind of freshwater fish feed rich in DHA nutrition, with embodiment 1, difference is: feed formula, make by the raw material of following weight part: 25 parts of peanut meal, 15 parts of soybean meal, 6 parts of concentrated soybean protein, cracked 8 parts of Chytrium powder, 10 parts of Schizochytrium waste residue, 2 parts of Bacillus natto, 0.2 part of yeast extract, 1 part of non-starch polysaccharidase, 12 parts of corn germ oil.
Embodiment 3
[0024] A freshwater fish feed rich in DHA nutrition, the same as in Example 1, the difference is that the feed preparation method is different: (1) take peanut meal and soybean meal by weight and fully mix them and pulverize them to 60 mesh, add water and some Ferment the yeast extract at 32°C for 8 hours; (2) mix the parts by weight of Schizochytrium, Schizochytrium waste residue, and Bacillus natto, and then add the remaining yeast extract to carry out shaking table fermentation; (2) Mix the processed materials evenly, add corn germ oil, mix well, and granulate with a wet granulation system; (4) Dry the granulated feed in step (3) at 80°C, and dry the non-starch The polysaccharase is evenly sprayed onto the surface of the feed granules; (5) the grading sieve is used to remove the powder, and the qualified packaging is inspected. The shaking table fermentation conditions in step (2): temperature 22° C., fermentation 15 h at 500 r / min.
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Abstract
The invention discloses freshwater fish feed rich in DHA nutrients. The freshwater fish feed is prepared from 15 to 30 parts by weight of peanut meal, 10 to 25 parts by weight of soybean meal, 5 to 10 parts by weight of soy protein concentrate, 0 to 10 parts by weight of schizochytrium limacinum powder, 10 to 25 parts by weight of schizochytrium limacinum residues, 1 to 5 parts by weight of bacillus natto, 0.2 to 1 part by weight of yeast extract, 1 to 3 parts by weight of a non-starch polysaccharide enzyme and 10 to 25 parts by weight of corn germ oil. The schizochytrium limacinum residues are substances obtained by extraction of DHA from schizochytrium limacinum. The freshwater fish feed has a reasonable formula, realizes a low cost, does not produce pollution, is safe and reliable, utilizes schizochytrium limacinum and its residues as raw materials to replace fish meal, improves DHA and EPA contents of fish, promotes growth and development of fish, improves fish immunity, reduces a breeding cost and is suitable for large-scale production of safe and functional freshwater fish products rich in DHA.
Description
technical field [0001] The invention belongs to the field of fish farming, and in particular relates to a freshwater fish feed rich in DHA nutrition. Background technique [0002] Modern food nutrition research shows that the content of polyunsaturated fatty acids in the diet is closely related to the health of the human body, and the role of n-3 polyunsaturated fatty acids is particularly prominent. Increase the intake of n-3 polyunsaturated fatty acids in the diet It helps to maintain the physiological functions of cells, reduce blood lipids and cholesterol levels in blood, reduce blood viscosity, increase the activity of brain cells, thereby reducing the incidence of cardiovascular and cerebrovascular diseases. In particular, EPA and DHA in n-3 polyunsaturated fatty acids have important physiological effects on the human body. EPA has good functional effects on promoting the metabolism of saturated fatty acids in the body, preventing fat deposition on blood vessel walls,...
Claims
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Application Information
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