Special fresh particle puffed feed for salmons and preparation method of feed
A salmon and feed technology, which is applied in animal feed, animal feed, application and other directions, can solve the problems of slow growth of salmon, poor meat quality and meat color, low economic benefits, etc., so as to improve fish meat quality, taste good, and improve survival rate Effect
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Embodiment 1
[0014] Example 1 Salmon Growth Contrast Test
[0015] The composition of adult salmon feed and the weight percentage content of each component are: imported fish meal 22%, fresh fish paste 23%, krill meal 10%, fermented soybean meal 5%, active yeast 4%, soybean lecithin 2.5%, diphosphate Hydrogen calcium 2%, high-gluten flour 14%, medical stone 2%, multivitamin 2%, imported fish oil 12%, natural astaxanthin 1.5%.
[0016] Determination of amino acid composition and content in salmon muscle by amino acid automatic analyzer; determination of fatty acid composition and content in salmon muscle by gas chromatography-mass chromatography; determination of inosinic acid and guanylic acid content in salmon muscle by high performance liquid chromatography ;Comprehensive sensory evaluation is carried out from the aspects of fish body surface color, muscle taste, smell (fragrance and earthy smell), muscle density, etc. , Poor, 5 points to 1 point
[0017] Table 1 Comparison of growth ...
Embodiment 2
[0022] The composition of adult salmon feed and the weight percentage content of each component are: imported fish meal 18%, fresh fish paste 26%, krill meal 8%, fermented soybean meal 7%, active yeast 4%, soybean lecithin 3.5%, diphosphate Hydrogen calcium 2.5%, high-gluten flour 14%, medical stone 2%, multivitamin 2%, imported fish oil 10.5%, natural astaxanthin 2.5%.
[0023] The preparation method of fresh fish paste is:
[0024] The chilled miscellaneous fish was stirred and pulverized to reach 0.155mm after ultrafine crushing, and then treated with trypsin for 110 minutes, then concentrated in low-temperature vacuum and then filtered through an 80-mesh sieve to prepare fresh miscellaneous fish paste, in which the concentration of protease was 4500u / g . Fresh miscellaneous fish paste is mixed with other powdery raw materials, prepared, expanded and extruded, dried, and packaged to prepare fresh granular extruded feed for salmon.
Embodiment 3
[0026] The composition of adult salmon feed and the weight percentage content of each component are: 20% imported fish meal, 28% fresh fish paste, 9% krill meal, 5.5% fermented soybean meal, 4% active yeast, 3% soybean lecithin, diphosphate Hydrogen calcium 1.5%, high-gluten flour 14%, medical stone 1%, multivitamin 1%, imported fish oil 11%, natural astaxanthin 2%.
[0027] The preparation method of fresh fish paste is:
[0028] The chilled miscellaneous fish was stirred and pulverized to reach 0.160mm after ultrafine crushing, and trypsin and flavored protease (adding ratio 2:1) were added for 100 minutes, then concentrated in low-temperature vacuum and then filtered through an 80-mesh sieve to prepare fresh miscellaneous fish paste. The added concentration of protease is 4000u / g. Fresh miscellaneous fish paste is mixed with other powdery raw materials, prepared, expanded and extruded, dried, and packaged to prepare fresh granular extruded feed for salmon.
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