75results about How to "Palatability effect" patented technology

The invention discloses a method for producing a forage immune enhancer by adopting a soybean curb residue and an orange peel. The method comprises the following steps: respectively crushing the soybean curb residue, dried pine needles, dry dunaliella cells and dry orange peel into coarse powder of 60-80 meshes; burdening the raw materials in parts by weight: 45-50 parts of soybean curb residue, 30-35 parts of dried pine needles, 2-5 parts of dry dunaliella cells, 15-18 parts of dry orange peel and 2.0-2.5 parts of an assistant, wherein the assistant is prepared from 49 parts of NaHCO3 and 1 part of MgSO4; the moisture content of the pine needles, the dunaliella cells and the orange peel is 3-5%, the moisture content of bean dregs is 18-20%; mixing the mixture of four coarse powder with the assistant according to the ratio, wherein the assistant accounts for 2.0-2.5% of dry weight of the total material; evenly mixing and then grinding for 30 minutes; filtering by a 400-mesh sieve; processing by using enzyme-aid micronization treatment, so as to obtain the forage immune enhancer product, wherein the treatment time is 15-30 minutes according to the quality and the humidity of the raw materials. By adopting the forage immune enhancer produced by the method disclosed by the invention, the production cost of the raw materials is significantly reduced, a lot of waste bean dregs produced in bean product production are recycled, low-carbon production is achieved, and the added value of products is increased.

The present invention relates to an acidifier for a piglet feed, and a preparation method thereof. The acidifier comprises the following components, by weight, 25-45% of phosphoric acid, 8-15% of lactic acid, 5-10% of fumaric acid, 5-10% of citric acid, 3-8% of calcium formate, 10-20% of white carbon black, 10-20% of calcium hydrogen phosphate, and 10-20% of stearic acid. According to the preparation method, the components are subjected to mixing, heating, granulation, screening and other process steps to prepare the acidifier for the piglet feed. Compared with the acidifier in the prior art, the acidifier of the present invention has advantages of good use effect, stable product performance, simple synthesis route, ensured acid-sensitive nutrient substance titer, and the like.

Relating to the field of microorganisms, the invention discloses a zearalenone (ZEN) degrading enzyme, a gene, a preparation method and application thereof, as well as a zearalenone degradation method. Specifically, the invention discloses a zearalenone degrading enzyme, which has an amino acid sequence shown as (a) and / or (b) as follows: (a) an amino acid sequence shown as SEQ ID NO:2; and (b) anamino acid sequence that is obtained by substitution, deletion or adding of one or more of the 1st-262nd and 264th amino acid residues in the amino acid sequence shown as SEQ ID NO:2 and still has zearalenone degrading enzyme activity. The zearalenone degrading enzyme provided by the invention can achieve efficient and rapid degradation of ZEN, and has good industrial application prospects.

The invention discloses a composite immunopotentiator for garrupa and belongs to the technical field of feed additives. The composite immunopotentiator is characterized by consisting of the following ingredients in parts by weight: 5-15 parts of potmarigold calendula rachis powder, 10-20 parts of folium cortex eucommiae powder, 5-10 parts of bitter gourd powder, 12-18 parts of radix bupleuri, 12-18 parts of astragalus root, 5-10 parts of dried old orange peel, 5-10 parts of bighead atractylodes rhizome, 12-18 parts of hawthorn and 5-10 parts of acanthopanax. The composite immunopotentiator disclosed by the invention is added in a garrupa mixed feed as a feed additive so as to completely replace antibiotic; the natural Chinese herbal medicine can be used for effectively reinforcing the immunity of the organism of the garrupa, improving the resistance on diseases and improving the rate of survival; the composite immunopotentiator is free from a toxic side effect and an untoward effect and is free from unfavorable effect on palatability of the feed; and the raw material source of the composite immunopotentiator disclosed by the invention is stable, the cost is low and the production technique is simple.

The invention discloses a Chinese herbal medicine feed additive for preventing enteritis of Litopenaeus vannamei. The feed additive provided by the invention is prepared by mixing rough gentian, Cortex Phellodendri, dried tangerine peel, rhubarb, Magnolia officinalis, rheum officinale, Poria cocos, the root of large-flowered skullcap and the root of membranous milk vetch, and adding a corn cob powder. The feed additive provided by the invention can be used for preventing enteritis of Litopenaeus vannamei, and has the advantage of enhancing growth rate and immunity of Litopenaeus vannamei, and raising success rate of breeding.

The invention discloses a Chinese medicinal herb disease-resistant additive for a prawn feed. The additive is prepared from the following raw materials in parts by weight: 20-30 parts of indigowoad root, 10-20 parts of parslane herb, 10-20 parts of dangshen, 10-20 parts of garlic, 10-15 parts of baical skullcap root, 10-15 parts of largehead atractylodes rhizome, 10-15 parts of Chinese pulsatillaroot and 8-12 parts of dried orange peel. The additive is prepared by the following steps of: grinding the Chinese medicinal herbs into fine powder of 100 meshes; and mixing uniformly. The invention has the advantages: (1) the adding amount of the feed additive in a prawn compound feed is only 0.15-0.25 percent, and the additive can be fed after being mixed with the feed in the weight ratio 1:500before feeding; (2) the immunity and disease resistance of prawns can be enhanced remarkably, the survival rate is increased, a good disease resistance effect on intestinal tract diseases such as prawn enteritis and the like is particularly achieved, and intestinal mucosa injury is repaired; (3) the additive does not cause any adverse effect on the palatability of the prawn compound feed; and (4)raw materials adopted for the additive have rich sources in China and stable and low prices, and the production and processing processes are simple.

Relating to the field of microorganisms, the invention discloses a zearalenone degrading enzyme, a gene, a preparation method and application thereof, as well as a zearalenone degradation method. Specifically, the invention discloses a zearalenone degrading enzyme, which has an amino acid sequence shown as (a) and / or (b) as follows: (a) an amino acid sequence shown as SEQ ID NO:1; and (b) an aminoacid sequence that is obtained by substitution, deletion or adding of one or more of the 1st, 2nd and 4th-264th amino acid residues in the amino acid sequence shown as SEQ ID NO:1 and still has zearalenone degrading enzyme activity. The zearalenone degrading enzyme provided by the invention can achieve efficient and rapid degradation of ZEN, and has good industrial application prospects.

The invention discloses a compound shell reinforcing additive for sugpo prawns and a preparation method of the compound shell reinforcing additive. The additive is characterized by being prepared from the following substance ingredients in percentage by weight: 40 percent to 60 percent of monocalcium phosphate, 5 percent to 20 percent of calcium lactate, 2 percent to 4 percent of astaxanthin, 5 percent to 10 percent of cholesterol, 10 to 15 percent of 35 percent vitamin C- phosphate, 1 percent to 3 percent of vitamin D3, 2 percent to 4 percent of vitamin E and 5 percent to 15 percent of mannan oligosaccharide, wherein the astaxanthin has a chemical name of 3,3'-dihydroxy-4,4'-diketo-beta, beta'-renieratene, and a molecular formula is C40H52O4. The preparation method comprises the steps that all ingredients are weighed according to the weight percentage; all ingredients are respectively crushed; and all ingredients are put in a mixing machine for being uniformly mixed, wherein the feeding has the order that monocalcium phosphate is firstly placed, and then other ingredients are successively added. The additive and the preparation method have the advantages that the problems of shell softness, shell removal unsuccess, shell reinforcement and the like in the sugpo prawn cultivation process are solved, the self immunocompetence of the sugpo prawns is improved, any adverse influence is not caused on the feed palatability, the raw material ingredient source is stable, and the cost is low.

The invention discloses a feed additive for reducing nitrogen excretion of ruminants and a preparation method of the feed additive, relates to the field of feed, and is used for solving the problems that in the prior art, absorptivity of protein feed nutrient substances is low due to restriction of ruminants to digestive absorption of nitrogen source substances, and the feed additive is poor in palatability and over high in cost. The feed additive for reducing nitrogen excretion of ruminants comprises the following raw material components in parts by weight: 782-3,128 parts of slow-release urea and 1,564 parts of by-pass rumen protection methionine, wherein the slow-release urea comprises the following components in parts by weight: 322-1288 parts of feed grade urea, 345-1,380 parts of acrylic resin IV and 115-460 parts of pregelatinized starch; and the by-pass rumen protection methionine comprises the following components in parts by weight: 204 parts of a wall material and 1,360 parts of a DL-methionine core material. By the feed additive for reducing nitrogen excretion of ruminants, nitrogen excretion of the ruminants can be reduced obviously, deposition of nitrogen in tissues is increased, and meanwhile, effects of improving a breeding environment and increasing breeding benefit are achieved.

The invention discloses an immunopotentiator for a young portunus trituberculatus and an application thereof. The immunopotentiator is characterized by being prepared by evenly mixing the following raw materials in parts by weight: 10-15 parts of vitamin C, 5-10 parts of levamisole, 10-15 parts of astaxanthin, 10-20 parts of hypoxanthine nucleotide, 20-30 parts of beta-1,3-glucan, and 20-30 parts of seaweed polysaccharides. The mass percentage content of the immunopotentiator in a feeding feed is 0.06-0.08%. The immunopotentiator has the advantages that: the addition amount of the immunopotentiator in the feed is only 0.06-0.08%, thus the immunity and the disease resistance of the young portunus trituberculatus are significantly improved, so as to improve the survival rate of breeding portunus trituberculatus, wherein the survival rate can be increased by 25% or more, and the immune protection rate can reach 50% or more; and the immunopotentiator has no toxic or side effect, no residue and no drug resistance, also has no adverse effect on the feed palatability, has less addition amount, and can significantly improve the efficacy of the immunity and the disease resistance of the young portunus trituberculatus.

The invention disclose an immunopotentiator for large yellow croaker juvenile, which is prepared by uniformly mixing the raw materials including fructooligosccharide, galactooligosaccharides, mannan oligosaccharides and yeast extract; only 0.1 to 0.2% of the addition amount of the immunopotentiator in feed can prominently enhance the immunity and the disease resistance of the large yellow croaker juvenile so as to raise the survival rate of large yellow croaker fry in a full culture period, the survival rate can be raised by over 12% and the immunoprotection rate can reach over 30%; and the immunopotentiator is free from toxic and side effects, residue and drug resistance, and also, has no adverse impact on feed palatability. Thus the immunopotentiator for the large yellow croaker juvenile is small in addition amount, can prominently enhance the immunity and the disease resistance of the large yellow croaker juvenile, and can raise the culture survival rate by over 12% and reach the immunoprotection rate up to over 30%.

The invention discloses a feed additive for a large yellow croaker, belonging to the technical field of the feed additive. The feed additive is characterized by comprising the following components by weight part: 15-25 parts of pomegranate bark, 10-30 parts of houttuynia cordata, 20-30 parts of hawthorn, 10-15 parts of onion, 10-15 parts of garlic, and 3-5 parts of salt. The feed additive for the large yellow croaker is used in a compound feed for the large yellow croaker as the feed additive, can effectively prevent common diseases such as vibriosis, a bacterial gill disease and enteritis, effectively strengthens the organism immunity of the large yellow croaker simultaneously, improves the resistance to the diseases and the survival rate, and is free of toxic and side effects and adverse reaction, and free of adverse effect on the palatability of the feed. The material used in the feed additive is stable in source and low in cost, and the production process is simple.

Relating to the field of microorganisms, the invention discloses a vomitoxin degrading enzyme and a gene thereof, a preparation method and application, as well as a vomitoxin degradation method. Specifically, the invention provides the vomitoxin degrading enzyme having an amino acid sequence shown as the following (a) and / or (b): (a) an amino acid sequence shown as SEQ ID NO:2; and (b) an amino acid sequence that is obtained by substitution, deletion or adding of one or more of the 430th-450th amino acid residues in the amino acid sequence shown as SEQ ID NO:2 and still has vomitoxin degradingenzyme activity. The vomitoxin degrading enzyme provided by the invention can achieve efficient and rapid degradation of vomitoxin, and has good industrial application prospects.

The invention discloses Larimichthys crocea meat quality improver and application thereof. The improver is characterized by being made by mixing well the following materials according to parts by weight: 10-20 parts of saccharicterpenin, 0.03-0.05 part of selenium methionine, 15-20 parts of vitamin E, 0.5-1 part of chromium yeast, 10-15 parts of phytase, 10-15 parts of citric acid, 15-20 parts of lutein, 15-20 parts of betaine, 2-4 parts of Folium Perillae, and 2-4 parts of tangerine peel. This improver is added to feeding fodder according to a content of 0.04-0.06% by weight and has the advantage that the improver enables for Larimichthys crocea, a reduction of 15.44-19.69% in rude fat content, an increase of 9.07-11.35% in crude protein content, an increase of 15.4-23.1% in delicacy, an increase of 17.5% in taste and an increase of 9.5-14.3% in tenderness, thereby improving significantly fat content in Larimichthys crocea and improving muscular delicacy and tenderness.

The invention relates to a compound immunopotentiator, particularly to a compound immunopotentiator for rachycentron canadum fries, and belongs to the field of feed additives for rachycentron canadum fries. The compound immunopotentiator for the rachycentron canadum fries is prepared from the following components (by wt%): Beta-glucan 20-25%, vitamin C-2-polyphosphonate 5-20%, vitamin E 8-15%, FeSO4*7H2O 5-20%, sodium selenite 0.2-0.5%, astragalus membranaceus 10-35%, radix bupleuri 5-20%, and glucose 5-30%. The compound immunopotentiator can be directly added into the feed of the rachycentron canadum fries for oral feeding or sprinkled over water where the rachycentron canadum fries live; and can remarkably improve the immunity and the disease resistance of the rachycentron canadum fries. The compound immunopotentiator has the advantages of no toxic and adverse residues, no drug resistance, environmental friendliness, no adverse effect on feed palatability, stable source of raw materials, and simple production process.

The invention discloses a stress resistance reinforcing agent for harvestfishes and application of the stress resistance reinforcing agent. The stress resistance reinforcing agent is characterized by being prepared by uniformly mixing raw materials in parts by weight: 8-12 parts of muramyldipeptide, 8-12 parts of nucleotide, 15-20 parts of humic acid, 10-20 parts of taurine, 10-15 parts of fumaric acid, 8-10 parts of ferulic acid, 15-20 parts of vitamin E, 3-5 parts of selenium methionine, and 2-4 parts of rhizoma coptidis. The addition quantity of the stress resistance reinforcing agent in percentage by mass to a fed harvestfish feed is 0.06-0.08%, the stress resistance reinforcing agent has the advantages that the causal organism resistance and environmental stress resistance of the harvestfishes can be obviously improved, the survival rate of the harvestfishes can be increased by 16-20%, and the average weight of the harvestfishes can be increased by 21-24.4%.

In order to solve the survival possibility of probiotics in high-temperature and high humidity environment and add them into aquatic microcapsule baits to produce probiotic-containing microcapsule baits suitable for shrimps, crabs, fry and the like, the invention discloses a composite immunopotentiator for control of Mylopharyngodon piceus death at high temperature in summer and its use method. The composite immunopotentiator mainly comprises the following raw materials by mass: 20-40% of a dried ginger extract, 5-15% of propylgallate, 25-40% of tryptophan, 6-17% of allicin, 5-20% of vitamin E, and 2-10% of ethoxy quinoline. The composite immunopotentiator for control of Mylopharyngodon piceus death at high temperature in summer can be blended into forage as a forage additive, and during feeding, its adding amount accounts for 0.1-0.5% of the mass of the forage; or the composite immunopotentiator can be splashed in a fish pond, and during splashing into the fish pond, the use concentration of the composite immunopotentiator is 0.2-0.4ppm. With the composite immunopotentiator provided in the invention, the Mylopharyngodon piceus's body immune function can be effectively improved, and the death rate of Mylopharyngodon piceus can be reduced.

The invention disclose an immunopotentiator for large yellow croaker juvenile, which is prepared by uniformly mixing the raw materials including fructooligosccharide, galactooligosaccharides, mannan oligosaccharides and yeast extract; only 0.1 to 0.2% of the addition amount of the immunopotentiator in feed can prominently enhance the immunity and the disease resistance of the large yellow croakerjuvenile so as to raise the survival rate of large yellow croaker fry in a full culture period, the survival rate can be raised by over 12% and the immunoprotection rate can reach over 30%; and the immunopotentiator is free from toxic and side effects, residue and drug resistance, and also, has no adverse impact on feed palatability. Thus the immunopotentiator for the large yellow croaker juvenile is small in addition amount, can prominently enhance the immunity and the disease resistance of the large yellow croaker juvenile, and can raise the culture survival rate by over 12% and reach the immunoprotection rate up to over 30%.

The invention relates to the field of feed additives and discloses a feed addition material, a preparation method thereof and a feed additive. The feed addition material comprises the ingredients in parts by weight: 1 to 20 parts of beta-cyclodextrin, 10 to 80 parts of monensin and 1 to 10 parts of glycyrrhizic acid. The invention also provides the feed additive, which comprises the feed additionmaterial, a filling agent, a bonding agent and a disintegrating agent. The feed addition material uses the beta-cyclodextrin as coating materials, the influence on the animal palatability caused by the monensin is avoided, in addition, the glycyrrhizic acid is added for prompting the absorption of the monensin in animal bodies and the persistent medicine effect taking, the animal growth can be more perfectly promoted, the coccidiosis is prevented and treated, and the feed addition material can be applied to the preparation process of feed additives.

The invention discloses a Chinese herbal medicine additive for improving the cultivation survival rate of maternal oysters. The Chinese herbal medicine additive is characterized by being prepared from, by mass, 5-12% of gynostemma pentaphylla, 5-10% of radix bupleuri, 4-8% of pericarpium citri reticulatae, 3-5% of Mangnolia officinalis, 10-15% of plantain herb, 3-5% of ligusticum wallichii, 10-15% of herba portulacae, 5-10% of dandelion, 5-10% of Rhodiola rosea, 5-12% of bunge corydalis herb, 8-12% of radix isatidis, 5-10% of houttuynia cordata. 3-8% of pinellia ternata and 4-8% of lonicera japonica. The invention further discloses the preparation method and use method of the Chinese herbal medicine additive for improving the cultivation survival rate of the maternal oysters. The materials of the Chinese herbal medicine have a wide sources and are cheap. The production process is simple, the functional ingredients of the Chinese herbal medicine are extracted, the cultivation water quality of the maternal oysters is improved, outbreaking of diseases and microorganisms is effectively prevented, the immunity and disease resistance of the maternal oysters are enhanced, the cultivation survival rate of the maternal oysters is improved, and the additive is an ideal, environment-friendly, safe and novel Chinese herbal medicine additive.

The invention discloses a feed additive for the production of Beta-carotene-rich eggs and a preparation method thereof, which belong to the technical field of feeds. The novel feed additive is characterized in that: the feed additive contains microshear-additive red pepper powder and microshear-additive dunaliella powder which are obtained by the processing of the microshear-additive interaction technique, wherein the mixture ratio of the microshear-additive red pepper powder to the microshear-additive dunaliella powder is between 1:2 and 1:6. The invention utilizes the advanced microshear-additive interaction technique to process natural plants, so that a great deal of Beta-carotene in the natural plants can be released and easily absorbed by animals, consequently, compared with the conventional processing technique, the invention notably reduces the amount of added red peppers and dunaliella, so that the production cost is saved, moreover, the potential hazard of ingredients (such as capsaicin) irritating the intestinal tracts of female poultry is reduced, and ultimately, the content of Beta-carotene in eggs and the weights of eggs can be notably increased; moreover, the processis simple, and the feed additive is convenient to use.

The invention discloses a feed additive for promoting the gonadal development of adult blue crabs and application of the feed additive. The feed additive is characterized by being prepared through uniformly mixing and compounding the following raw materials in parts by weight: 10-20 parts of haws, 15-25 parts of motherwort, 15-25 parts of Chinese wolfberry fruits, 20-30 parts of radix astragali and 15-25 parts of VE. The mass percentage of the additive for promoting the gonadal development in released feeds is 0.08-0.10%. The feed additive has the advantages that the gonadal development and the growth of the adult blue crabs can be obviously promoted, the addition quantity of the feed additive in the feeds is only 0.08-0.10%, the survival rate of the blue crabs can be increased by 6-10%, the average weight can be increased by 20.8-24.3%, the gonadal index can be increased by 15.8-17.4%, the bait coefficient is reduced by 1.93-2.1, and the color of crab cream is improved.

The invention discloses an odontobutis obscura feed additive. The odontobutis obscura feed additive is characterized by comprising the following components in parts by weight: 30-50 parts of garlic head, 5-10 parts of rhizoma alismatis, 1-5 parts of hawthorn, 1-3 parts of liquorice, 1-5 parts of tribulus terrestris, 1-5 parts of valerian and 20-30 parts of edible salt. Compared with the existing preparation, the odontobutis obscura feed additive has the advantages as follows: (1) the odontobutis obscura feed additive is used in odontobutis obscura mince feed as the feed additive in a cooperating manner, and allicin contained in the garlic can effectively prevent diseases of odontobutis obscura; (2) through mutual cooperating of the Chinese herbs, the body immunity of the odontobutis obscura can be improved and the disease resistance and the survival rate of the odontobutis obscura are improved; (3) the odontobutis obscura feed additive has no toxic or side effects, has no adverse reaction and has no adverse effect on palatability of a feed; (4) the odontobutis obscura feed additive is stable in source of raw materials, low in cost and simple in production process; (5) the edible salt contained in the additive can be dissolved in water quickly, so that the incidence of water mould can be effectively reduced.

The invention discloses an environment-friendly macrobrachium rosenbergii compound feed. The compound feed comprises the following components in parts by weight: 10-15 parts of imported fish meal, 15-20 parts of peeled soybean meal, 5-6 parts of squid paste, 7.5-20 parts of flour, 8-10 parts of shrimp shell powder, 8-10 parts of peanut kernel cakes, 6-10 parts of cottonseed meal, 6-8 parts of rapeseed meal, 4-4.5 parts of soybean oil, 2 parts of phospholipid, 2 parts of calcium dihydrogen phosphate, 2 parts of a Chinese herbal medicine compound preparation, and 2 parts of a premix and an additive. According to the compound feed provided by the invention, partial fish meal is replaced by match of a plurality of animal protein raw materials and vegetable protein raw materials on the premiseof not damaging the balance of amino acid, so that the compound feed has the characteristics of low fish meal content, low bait coefficient, low feed cost and good stability in water, can promote feeding of macrobrachium rosenbergii, and can improve the growth speed of macrobrachium rosenbergii.

The invention belongs to the technical field of feed, and particularly relates to a feed additive capable of improving the high-temperature stress resistance ability of a mariculture animal, and a preparation method and application thereof. The feed additive comprises chromium nicotinate, various vitamins, various trace elements, glutamine, cysteamine hydrochloride, allicin, astragalus polysaccharide, berberine hydrochloride, bacillus subtilis, lactic acid bacteria, sodium bicarbonate, methionine, lysine, tryptophan, potassium dihydrogen phosphate and digestive enzyme, and is added into mariculture animal feed at an addition ratio of 0.1-0.5%, the high-temperature stress resistance ability of the mariculture animal can be effectively improved, the ingestion rate, the digestion rate, the growth rate and the survival rate of the mariculture animal are obviously improved, and the physiological steady state and the immunity of the mariculture animal are improved. Meanwhile, raw materials adopted by the feed additive have a stable source and a reasonable price cost, and the feed additive disclosed by the invention has a simple production technology and does not have any bad influence onfeed palatability.

The invention relates to a feed additive for increasing the sugar utilization rate of trachinotus ovatus and belongs to the technical field of feed processing. The feed additive is particularly composed of following components in parts by weight: 30-40 parts of chromium picolinate, 10-20 parts of chromium methionine, 10-20 parts of algal polysaccharides, 10-20 parts of vitamin C-2-polyphosphoester, 10-20 parts of glycine betaine, 5-10 parts of phospholipid, 5-10 parts of dimethyl-beta-dimethylpropiothetin and 10-20 parts of microcrystalline celluloses. According to the feed additive disclosed by the invention, according to a formula can improve the utilization rate of the sugar in a feed by the trachinotus ovatus can be increased , so as to reduce the utilization of animal protein sources including fish meal and the like in the feed and develop and expand a feed resource; furthermore, the survival rate and the growth speed of the trachinotus ovatus are increased, the feed cost is reduced and the economic benefits are improved.

The invention discloses an immunopotentiator for greasy back shrimps, belonging to the technical field of feed additives. The immunopotentiator is prepared from the following components in parts by weight: 5-10 parts of purslane, 10-20 parts of codonopsis pilosula, 5-10 parts of polygonum cuspidatum, 15-30 parts of abelmoschus esculentus powder, 5-10 parts of orange peel, 6-18 parts of houttuynia cordata, 5-10 parts of medlar and 6-18 parts of folium mori. The immunopotentiator for greasy back shrimps is reasonable in compatibility; when the immunopotentiator is added into a feed, the immunologic functions and disadvantage resistance of the greasy back shrimps can be favorably enhanced, the healthy and safe growth of the greasy back shrimps is favorably promoted, the resistance to diseases is improved, and the survival rate is increased. In addition, the immunopotentiator is green, pollution-free, safe, reliable and free of adverse effects on the palatability of the feed.

A Chinese medicinal immunopotentiator for prawn is prepared from 6 Chinese medicinal materials including astragalus root, pilose asiabell root, Chinese angelica root, liquorice root, etc. in a certain proportion. Its advantages are low dosage (0.1-0.2%), high effect on improving immunity and increasing survival rate, and low cost.

The invention discloses an immunopotentiator for siganidae, belonging to the technical field of feed additives. The immunopotentiator is prepared from the following components in parts by weight: 10-30 parts of mushrooms, 10-30 parts of carrots, 2-10 parts of Indian damnacanthus herb roots, 15-30 parts of acanthopanax senticosus, 1-6 parts of limacia sagittata, 2-10 parts of cyrtomium rhizome, 15-30 parts of white poria, 1-6 parts of gynostemma pentaphyllum, 2-10 parts of hawthorns, 2-10 parts of spinaches and 0.1-0.5 part of vitamin C. The immunopotentiator for siganidae is reasonable in compatibility; when the immunopotentiator is added into a feed, the immunologic function and disadvantage resistance of the siganidae can be favorably enhanced, the healthy and safe growth of the siganidae is favorably promoted, the resistance to diseases is improved, and the survival rate is increased. In addition, the immunopotentiator is green, pollution-free, safe, reliable and free of adverse effects on the palatability of the feed.