Preparation method of feed capable of promoting hairy crabs to change shells
A technology for hairy crabs and feed, which is applied to animal feed, animal feed, bacteria used in food preparation, etc., can solve the problems of increasing the risk of disease, affecting the absorption of crab nutrients, affecting growth and development, etc., to improve immunity, improve Immune ability and anti-stress ability, the effect of improving physical fitness and vitality
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Embodiment 1
[0017] A method for preparing a feed for promoting hairy crab moulting, comprising the following steps:
[0018] 1) Take 120 parts of fresh perch viscera and homogenate into the container, add 100 parts of distilled water, stir in the water bath and raise the temperature to 35°C, add 8% potassium hydroxide solution to adjust the pH to 8.2, continue to stir and heat up to 55°C, and keep warm for 15 minutes , add 5 parts of potassium chloride and stir to dissolve, salt out for 20 minutes and centrifuge while hot to separate the crude fish oil; siphon the crude fish oil and wash it with hot water 3 times, centrifuge while it is hot, take the upper liquid, and dry it in a vacuum oven to get the fish viscera Oil; 2) Weigh 100 parts of fish viscera oil, 150 parts of distilled water, and 0.05 parts of vitamin E, mix them evenly in a closed container, place the reaction container in an ultrasonic instrument, heat it to 70°C and keep it, and continue to supply oxygen for 10 minutes , t...
Embodiment 2
[0020] A method for preparing a feed for promoting hairy crab moulting, comprising the following steps:
[0021] 1) Extract fish viscera oil: Take 130 parts of fresh perch viscera homogenate into a container, add 150 parts of distilled water, stir in a water bath and raise the temperature to 36°C, add 10% potassium hydroxide solution to adjust the pH to 8.4, continue to stir and heat up to 60°C ℃, keep warm for 25 minutes, add 7 parts of potassium chloride and stir to dissolve, salt out for 30 minutes and centrifuge while hot to separate the crude fish oil; siphon the crude fish oil and wash it with hot water for 5 times, centrifuge while it is hot, take the upper liquid, and use a vacuum drying oven Fish viscera oil can be obtained by drying; fish viscera oil is very suitable as a nutrient substance for hairy crab feed, and this method has a high yield of fish oil and is easy to operate. Waste water and waste residue can be made into green and efficient fertilizers for complet...
Embodiment 3
[0028] A method for preparing feed for promoting hairy crab shell moulting, comprising: extracting fish visceral oil, modifying fish oil, fermenting fish meal, fermenting cottonseed meal, and compounding, specifically including the following steps:
[0029] Extract fish viscera oil: Take 130 parts of fresh perch viscera homogenate into the container, add 130 parts of distilled water, stir in the water bath and raise the temperature to 35°C, add 9% potassium hydroxide solution to adjust the pH to 8.3, continue to stir and heat up to 58°C, Keep warm for 20 minutes, add 6 parts of potassium chloride and stir to dissolve, salt out for 25 minutes and then centrifuge while hot to separate the crude fish oil; siphon the crude fish oil and wash it with hot water 4 times, centrifuge while it is hot, take the upper liquid, and dry it in a vacuum oven. Obtain fish viscera oil; fish viscera oil is very suitable as a nutrient substance for hairy crab feed, and this method has a high yield o...
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