Compound feed for enhancing immunity of grass carps
A technology of compound feed and immunity, which is applied in the field of compound feed for enhancing the immunity of grass carp and its preparation, can solve problems such as the deterioration of the breeding water environment, the lack of anti-fatty liver factors, and the imbalance of feed nutrition, so as to prevent fatty liver of grass carp, The effect of reducing fat accumulation and rapid growth
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Embodiment 1
[0029] Blueberry extract is prepared as follows:
[0030] Take blueberries and add 4 times the weight of water, and then perform beating treatment to obtain a slurry; add pectinase to the slurry and heat up to 60°C for enzymolysis. The enzyme time is 4 hours, and then boiled and extracted twice, each time for 2 hours, and the extracts are combined and concentrated. Just dry. The addition amount of pectinase is 2% of blueberry weight.
[0031] Mulberry leaf extract is prepared according to the following method:
[0032] Take the mulberry leaves and add 6 times the weight of water, and then perform beating treatment to obtain a slurry; add cellulase to the slurry and heat up to 45°C for enzymolysis, the enzyme time is 8h, and then boil and extract 3 times, each time for 0.5h, and combine the extracts , concentrated and dried. The adding amount of cellulase is 6% of blueberry weight.
Embodiment 2
[0034] Blueberry extract is prepared as follows:
[0035] Take blueberries and add 6 times the weight of water, and then perform beating treatment to obtain a slurry; add pectinase to the slurry and heat up to 40°C for enzymolysis, the enzyme time is 8h, and then boil for 3 times, each time 0.5h, combine the extracts, Concentrate and dry. The addition amount of pectinase is 5% of blueberry weight.
[0036] Mulberry leaf extract is prepared according to the following method:
[0037] Take the mulberry leaves and add 4 times the weight of water, and then perform beating treatment to obtain a slurry; add cellulase to the slurry and heat up to 65°C for enzymolysis, the enzyme time is 4h, and then boil and extract twice, each time for 2h, and combine the extracts, Concentrate and dry. The adding amount of cellulase is 3% of blueberry weight.
Embodiment 3
[0039] A compound feed for enhancing the immunity of grass carp, calculated in parts by weight, comprising the following raw materials:
[0040] 43 parts of corn germ meal, 21 parts of cottonseed cake, 18 parts of cassava flour, 17 parts of corn distiller's grains, 13 parts of wheat bran, 4 parts of silkworm chrysalis powder, 0.6 parts of probiotics, 4 parts of feed additives, 1.2 parts of mineral salt mixture and multidimensional pre- 1 part of mixed material, wherein the components of the feed additive include 7 parts by weight of black sesame, 8 parts of black tartary buckwheat, 4 parts of fish skin collagen, 3 parts of blueberry extract of Example 1 and the 1 part of mulberry leaf extract. Multidimensional Premix is a vitamin blend of vitamin C, vitamin E and inositol.
[0041] The preparation method of the compound feed that strengthens grass carp immunity comprises the following steps:
[0042] 1) Weigh 43 parts of corn germ meal, 21 parts of cottonseed cake, 18 part...
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