Insect oil additive and application thereof in precise breeding of fur animals

Abstract

The present application belongs to the technical field of fur animal feed additives, and discloses an insect oil additive and application thereof in precise breeding of fur animals. The additive comprises the following raw materials in percentage by mass: 93.0% to 98.0% of a composite insect base oil, and 2.0% to 7.0% of a composite stable synergistic system. Yellow mealworm oil and black soldier fly oil are used as core base materials, a fat-soluble antioxidant system, a biological emulsifying stabilizer and a functional synergistic component are used to construct a scientifically proportioned composite insect oil additive. The additive can be added according to the physiological cycle differences of fur animals in the breeding period, the lactation period, the growing period and the winter coat maturation period. The breeding experiment verification shows that the additive can significantly regulate the skin hair follicle development of fur animals, inhibit inflammation and bacteria, promote the development of fur, and improve the lipid metabolism, the survival rate of young animals and the reproductive performance. Meanwhile, the additive realizes low-cost green replacement of traditional fish oil, has strong storage stability, and is suitable for the breeding of large-scale fur animals.

Description

Technical Field

[0001] This invention belongs to the technical field of feed additives for fur-bearing animals, specifically relating to a functional feed additive made from a compound of yellow mealworm oil and black soldier fly oil, and its application in the large-scale precision farming of fur-bearing animals such as mink, foxes, and raccoon dogs. Background Technology

[0002] Mink, silver fox, blue fox, and Ussuri raccoon dog are economically important fur-bearing animals. The economic benefits of their farming industry depend primarily on the quality, morphology, and integrity of the fur, as well as the reproductive performance of breeding animals. Fur-bearing animals are special animals that are high in fat, high in energy, and highly dependent on unsaturated fatty acids. Their hair follicle differentiation and development, hair growth, skin barrier construction, and reproductive endocrine regulation all highly depend on the precise supply of exogenous functional fatty acids and bioactive substances.

[0003] At present, the oil supply system for fur-bearing animals in the industry seriously restricts the high-quality development of the industry. The main defects are as follows: (1) Traditional fish oil farming is costly and is very easy to oxidize and become rancid. During storage and feeding, peroxides and aldehydes are easily generated, causing intestinal damage, skin metabolic disorders, and yellowing and drying of fur. In addition, deep-sea fish oil generally has the risk of heavy metal and microplastic accumulation, which can easily cause accumulation and residue in the animal's body, reduce the quality of the hides, and does not meet the standards of green farming. (2) The fatty acid ratio of plant oils is unbalanced. For example, conventional plant oils such as soybean oil, palm oil, and corn oil are mainly composed of n-6 unsaturated fatty acids and have very low n-3 fatty acid content. The n-6 / n-3 ratio is seriously unbalanced. Long-term feeding will lead to increased inflammatory response in fur-bearing animals, hindered hair follicle development, sparse down, soft guard hairs, and thin and brittle hides, which will greatly reduce the grade of hides and the market price, and cannot meet the demand for high-quality fur cultivation during the winter fur season. (3) Existing insect oil formulation systems are too simple. For example, CN115119902A discloses the application of black soldier fly oil in improving the insulin sensitivity of pregnant mothers and / or offspring. Black soldier fly oil is rich in medium-chain saturated fatty acids and antibacterial substances, but it is lacking in long-chain unsaturated fatty acids, resulting in a weak ability to promote fur growth. Yellow mealworm oil is rich in sebum-promoting components such as oleic acid and linoleic acid, but it lacks natural antibacterial and anti-inflammatory properties, and cannot solve the problem of fungal and bacterial skin inflammation that is common in fur-bearing animals. It can be seen that no single oil can take into account the multiple functions of skin protection, hair promotion, anti-inflammation, and reproduction promotion. (4) Existing insect oil feed formulations are mostly simple physical mixtures, without precise ratio control based on the nutritional metabolism differences of fur-bearing animals in different physiological cycles. At the same time, there is no targeted optimization of the mechanism of hair follicle regulation and inflammation inhibition, resulting in unstable application effects and making it impossible to achieve industrialized breeding.

[0004] Therefore, the fur animal farming industry urgently needs a compound insect oil feed additive that is scientifically formulated, highly stable, functionally complex, and adaptable to the entire growth cycle, along with its precise feeding technology, to replace fish oil and fill the technological gap in the precise nutritional regulation of fur animals using insect oil. Summary of the Invention

[0005] To address the technical problems of existing technologies, such as high cost and pollution of fish oil, nutritional imbalance of vegetable oils, functional deficiencies of single insect oils, unstable formulation systems, and lack of precise segmented application, this invention provides a compound insect oil feed additive and its application in the precise breeding of fur-bearing animals. Through the complementary functions of yellow mealworm oil and black soldier fly oil, the synergistic effect of active components, the optimization of system stability, and precise segmented feeding, multiple technical effects can be achieved, including improved fur quality, regulated animal health, enhanced reproductive capacity, and reduced breeding costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The first aspect of this invention is to provide a compound insect oil feed additive, the raw materials of which, by mass percentage, include the following components: 93.0% to 98.0% compound insect base oil and 2.0% to 7.0% compound stabilizing and enhancing system; the compound insect base oil is a compound of black soldier fly oil and yellow mealworm oil, and the compound stabilizing and enhancing system is composed of fat-soluble antioxidant components, bio-emulsifying components, and fur development enhancing components.

[0008] Preferably, the mass ratio of black soldier fly oil to yellow mealworm oil is 1:1.5 to 1.5:1.

[0009] Preferably, the fat-soluble antioxidant component is selected from one or more of fat-soluble vitamin E, coenzyme Q10, BHA (butylated hydroxyanisole), and BHT (butylated hydroxytoluene).

[0010] Preferably, the bio-emulsifying component is selected from one or two of soybean lecithin and glyceryl monostearate.

[0011] Preferably, the fur growth-enhancing component is selected from one or more of phytosterols, ceramides, squalane, and panthenol.

[0012] Preferably, the mass percentage content of each component in the composite stabilizing and enhancing system is as follows: 0.3% to 1.2% fat-soluble antioxidant component, 1.5% to 5% bio-emulsifying component, and 0.2% to 0.8% fur development enhancing component.

[0013] In some embodiments of the present invention, the components and corresponding contents of the composite stabilizing and synergistic system are as follows: fat-soluble vitamin E 0.3% to 1.2%, soybean lecithin 1.0% to 3.5%, glyceryl monostearate 0.5% to 1.5%, and phytosterol synergist 0.2% to 0.8%.

[0014] In other embodiments of the present invention, the components and their corresponding contents of the composite stabilizing and synergistic system are as follows: fat-soluble coenzyme Q10 0.3% to 1.2%, soybean lecithin 1.0% to 3.5%, glyceryl monostearate 0.5% to 1.5%, and ceramide synergist 0.2% to 0.8%.

[0015] The second aspect of this invention provides a method for preparing the above-mentioned compound insect oil feed additive, comprising: low-temperature mixing and homogenization, vacuum dehydration and degassing, aseptic filtration and filling, with the temperature controlled at 35-45°C throughout the preparation process to avoid high-temperature oxidation and degradation of unsaturated fatty acids.

[0016] Preferably, the preparation method specifically includes the following steps: adding yellow mealworm oil and black soldier fly oil according to the ratio, stirring at low speed of 250-350 r / min at 38-42℃ for 10-20 min to achieve uniform fusion of the two oil molecules and form a stable mixed oil base material; sequentially adding fat-soluble antioxidant and fur development enhancing components, stirring and dissolving for 5-10 min; then adding bio-emulsifying components, heating to 42-45℃, and homogenizing and emulsifying at high speed of 650-850 r / min for 20-40 min to ensure complete integration of functional additives with the oil system; placing the emulsified composite oil in a vacuum degassing tank, dehydrating and degassing under vacuum conditions of -0.08 to -0.1 MPa and 40℃ for 10-15 min to remove moisture and oxygen from the system; filtering through a 200-mesh aseptic filter, and aseptically sealing and filling to obtain the finished functional composite insect oil feed additive.

[0017] Preferably, the feed additive is added at a rate of 1.2% to 4.8% of the total mass of the feed (basal diet).

[0018] The third aspect of the present invention is to provide a fur-bearing animal feed containing the above-mentioned functional compound insect oil feed additive, wherein the amount of the additive added is 1.2% to 4.8% of the total mass of the basic feed.

[0019] The feed is a general basal diet, comprising the following components by weight percentage: 32%–48% animal-derived protein raw materials, 16%–30% cereal energy raw materials, 10%–24% plant meal raw materials, 1.0%–3.0% mineral trace element premix, 0.5%–1.5% vitamin compound premix, and the remainder being extruded carrier.

[0020] The fourth aspect of this invention provides the application of the aforementioned functional insect oil feed additive in the breeding of fur-bearing animals at different physiological stages, the applications at these different physiological stages being as follows:

[0021] 1) Growing period: The additives are 1.8% to 3.0% of the total mass of the basal diet, used to promote the growth and development of the young and the body's immunity;

[0022] 2) Winter hair growth period: The additives are 3.2% to 4.8% of the total mass of the basal diet, used to activate hair follicle proliferation and differentiation, promote the growth of guard hairs and downy hairs, inhibit skin inflammation, and improve the quality of hides;

[0023] 3) Breeding period: The additives are 1.2% to 2.2% of the total mass of the basal diet, used to regulate the endocrine levels of breeding animals and increase the reproductive output;

[0024] 4) Lactation period: The additives are 1.8% to 3.0% of the total mass of the basic diet to increase the content and nutrition of maternal milk, reduce the rate of diarrhea in pups, and improve the survival rate of pups.

[0025] Because fur-bearing animals exhibit significant differences in metabolic pathways, nutritional needs, and resilience across different physiological stages—for example, the reproductive period emphasizes endocrine regulation and embryo protection; the lactation period emphasizes milk nutrition and intestinal protection for young animals; the growing period emphasizes growth and development and immune system building; and the winter fur period emphasizes hair follicle proliferation and skin barrier strengthening—this invention differentiates the amount of the oil additives added based on the physiological characteristics of each stage. This achieves precise nutritional regulation, avoids nutritional excess or deficiency, and maximizes the functional value of the compound oils.

[0026] Preferably, the fur-bearing animals include mink, silver fox, blue fox, Ussuri raccoon dog, etc.

[0027] Preferably, the insect oil feed additive has one or more of the following functions:

[0028] (1) Improve the growth and development of fur-bearing animals during their rearing period and increase their weight;

[0029] (2) Promotes the growth of guard hairs and down, increases down density, softness and luster, and improves the quality of hides;

[0030] (3) Improve the reproductive capacity of fur-bearing animals;

[0031] (4) Improve the survival rate of fur-bearing animal cubs.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] This invention utilizes a dual-oil blend of yellow mealworm oil and black soldier fly oil. Through scientific formulation and a complex, stable, and synergistic system, it overcomes many shortcomings of single-oil and traditional oils. The oil can be stored stably for 12 months without stratification or oxidative rancidity, with a peroxide value change rate of ≤5%, making it suitable for the industrial needs of large-scale feed production, long-distance transportation, and long-term storage. This additive can completely replace fish oil components in feed. It is a natural insect extract and food-grade feed adjuvant, green and non-toxic, suitable for use throughout the entire growth cycle of fur-bearing animals such as mink, silver fox, blue fox, and raccoon dog. It achieves effects such as promoting fur growth, anti-inflammatory and antibacterial properties, and regulating lipid metabolism, improving reproductive capacity and rearing performance (survival rate, growth and development, and immunity), resulting in significant economic benefits. Attached Figure Description

[0034] Figure 1 The results show the effects of each group of feed additives on the growth curves of silver foxes during the rearing period.

[0035] Figure 2 The results show the effects of different feed additives on hair follicle density and diameter during the winter fur period of silver foxes. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] Unless otherwise specified, the experimental methods used in the embodiments of this invention are conventional methods; the materials and reagents used are commercially available unless otherwise specified. The mealworm oil and black soldier fly oil used in the embodiments of this invention were purchased from Qingdao Xinong Kangyuan Bioengineering Co., Ltd., Shandong Province.

[0038] Example 1

[0039] A compound insect oil feed additive, the raw materials are formulated according to a total mass ratio of 1000g, including: 480g black soldier fly oil, 480g yellow mealworm oil, 8g fat-soluble vitamin E, 15g soybean lecithin, 12g glyceryl monostearate, and 5g phytosterol synergist.

[0040] The preparation method specifically includes the following steps:

[0041] (1) Place the two types of oil in a constant temperature emulsification kettle and preheat at 40°C for 10 minutes;

[0042] (2) Add yellow mealworm oil and black soldier fly oil according to the above ratio, stir at 40℃ and 300r / min for 15min to achieve uniform fusion of the two oil molecules and form a stable mixed oil base material;

[0043] (3) Add fat-soluble vitamin E and phytosterol in sequence, stir and dissolve for 10 min; then add soybean lecithin and glyceryl monostearate, heat to 42℃, and homogenize and emulsify at 800 r / min for 30 min to ensure that the functional additives are completely combined with the oil system.

[0044] (4) Place the emulsified compound oil in a vacuum degassing tank and dehydrate and degas for 15 minutes under a vacuum of -0.1 MPa and 40°C to remove moisture and oxygen from the system; after filtration through a 200-mesh sterile filter, it is aseptically sealed and filled to obtain the compound insect oil feed additive.

[0045] Example 2

[0046] A compound insect oil feed additive, the raw materials are formulated according to a total mass ratio of 1000g, including: 560g black soldier fly oil, 390g yellow mealworm oil, 12g fat-soluble vitamin E, 20g soybean lecithin, 10g glyceryl monostearate, and 8g phytosterol synergist.

[0047] The preparation method is the same as in Example 1.

[0048] Example 3

[0049] A compound insect oil feed additive, the raw materials are formulated according to a total mass ratio of 1000g, including: 435g of black soldier fly oil, 520g of yellow mealworm oil, 5g of fat-soluble coenzyme Q10, 30g of soybean lecithin, 5g of glyceryl monostearate, and 5g of ceramide synergist.

[0050] The preparation method is the same as in Example 1.

[0051] Comparative Example 1

[0052] The difference from Example 1 is that only black soldier fly oil (960g) was used as the base oil in the raw materials, while the other components and amounts remained unchanged, and the preparation method was the same as in Example 1.

[0053] Comparative Example 2

[0054] The difference from Example 1 is that only mealworm oil (960g) was used as the base oil in the raw materials, while the other components and amounts remained unchanged, and the preparation method was the same as in Example 1.

[0055] Comparative Example 3

[0056] The difference from Example 1 is that the base oil in the raw materials is replaced with 960g of insect oil instead of black soldier fly oil and yellow mealworm oil, while the other components and amounts remain unchanged, and the preparation method is the same as in Example 1.

[0057] Application Trial

[0058] To verify the feeding effect of the feed additive of the present invention, a feeding experiment was conducted on fur-bearing animals with each group of feed additives prepared in the examples and comparative examples.

[0059] Experiment location: A fur-bearing animal farm in Liaocheng City, Shandong Province;

[0060] Feeding and Management: A total of 120 healthy, active, weaned silver fox cubs (half male, half female) with no significant weight difference were selected and randomly divided into 6 groups of 20 each. These were designated as Examples 1-3 and Comparative Examples 1-3, respectively. Feed additives obtained from Examples 1-3 and Comparative Examples 1-3 of this invention were added to the existing diet. Each group was fed three times daily, with feed weighed individually based on each fox's feeding behavior. Free access to water and natural lighting were provided. The enclosures were cleaned regularly to minimize the impact of feeding and management on the foxes. All foxes were housed in individual cages, with one fox per cage constituting one replicate. Feeding was conducted by a fixed caretaker throughout the experiment, adhering to the principle of free access to food. The feeding environment was kept consistent across all treatment groups. The experiment was conducted during the growth period, winter fur period, breeding period, and lactation period.

[0061] The basic diets of the silver foxes in each group were the same. The amount of additives prepared in this invention added to the diets at each period (based on the total mass of the basic diet as 100%, the mass percentage of the additives) is shown in Table 1.

[0062] Table 1. Additive dosage at different growth stages

[0063] Statistics on indicators for each period: weight growth at each stage of the rearing period, fur quality during the winter fur period (pelt length, pelt width, pelt weight, guard hair / down hair length, down hair density), number of offspring during the breeding period, and offspring survival rate, etc.

[0064] The determination method is as follows:

[0065] 1. During the growth period (June 24 to August 18, 2024), growth performance was observed by weighing the plants every two weeks (June 24 to July 7, July 8 to July 21, July 22 to August 4, and August 5 to August 18, 2024) in four separate periods. The mean values ​​of each group were calculated, and the statistical results are shown in Table 2. The growth curves are shown in Table 2. Figure 1 .

[0066] Table 2 Average body weight during the growing period (kg)

[0067] Note: Example 1 is compared pairwise with Comparative Examples 1-3 during the same period. *** P < 0.001.

[0068] Depend on Figure 1 It can be seen that, compared with the comparative group, the silver foxes fed with the additive prepared in the example showed better growth performance, with significantly increased weight gain in the first two weeks of feeding, and larger individuals. This not only increases the fur area, but also ensures that the strong body condition provides better resistance to diseases, indirectly affecting the production performance of the silver foxes.

[0069] 2. After the silver foxes in each group reached winter fur maturity, all male foxes were euthanized and skinned, and two female foxes were randomly selected for euthanasia, resulting in 12 foxes per group for testing. The skins were dried, laid flat, and the skin length (from the tip of the nose to the base of the tail) and width (the widest part of the fox skin) were measured. The skin weight was also measured. The length of the needle hair and underfur was measured on the back, shoulders, abdomen, and rump of each fox. After skinning, a 2cm square piece of skin was taken from the rump, the fur was removed, and skin tissue sections were prepared to determine the number and diameter of hair follicles. Sensory evaluation of fur quality: Experienced experts were invited to conduct sensory evaluation of underfur abundance and pelt luster. Underfur abundance was scored out of 10 points, and pelt luster was scored out of 5 points. The data for each group were calculated as mean ± SD. Statistical results are shown below. Figure 2 As shown in Table 3.

[0070] Table 3. Determination of Fur Quality Indicators

[0071] Note: Each example group is compared pairwise with Comparative Examples 1, 2, and 3. *** P < 0.001; ** P < 0.01; * P < 0.05.

[0072] The economic value of silver fox fur is mainly reflected in the quality of its fur. The indicators used in this experiment to evaluate the quality of silver fox fur include fur length, fur width, fur weight, guard hair length, underfur length, hair follicle density, and hair follicle diameter. (Based on Table 3...) Figure 2It is evident that the feed additives used in the embodiment group of this invention significantly outperformed the comparative group in all fur indicators (all reaching statistical significance). The hair follicle density in the embodiment group was significantly higher than that in the comparative group, while the hair follicle diameter was significantly lower, indicating that the additives of this invention improve the density of silver fox downy hair and simultaneously reduce downy hair fineness. This is likely because the fat-soluble chitin derivatives and natural antimicrobial peptides in black soldier fly oil and yellow mealworm oil can disrupt the cell membrane structure of pathogenic bacteria on the skin, inhibit the proliferation of harmful microorganisms such as Staphylococcus aureus, Malassezia, and dermatophytes, repair the skin barrier, and reduce blemishes such as dandruff, scabs, and rotting skin. Combined with fat-soluble vitamins and phytosterols as synergists, they promote the proliferation and differentiation of hair follicle stem cells, prolong the hair follicle growth phase, and increase downy hair density and guard hair length. In contrast, insect oil and fish oil alone cannot simultaneously achieve the effects of skin protection and hair promotion, leading to a decline in fur quality.

[0073] Large-scale breeding trials have verified that feeding during the winter fur season significantly improved the fur density, guard hair uniformity, luster, and smoothness of the silver foxes in the example group, increased the thickness and area of ​​the pelts, reduced the incidence of skin inflammation, and greatly decreased the rate of pelt defects. After expert evaluation, the yield of first-grade pelts increased, and the market value significantly improved.

[0074] 3. The remaining female foxes in each group were fed until the breeding and lactation periods. The number of cubs born and the number of cubs that survived were counted for each female fox in the group (5 female foxes were randomly selected). The average number of cubs born (total number of cubs born in the group / 5) and the cub survival rate (number of cubs that survived in the group / total number of cubs born * 100%) were calculated. The results are shown in Table 4.

[0075] Table 4

[0076] Compared with the comparative examples, the feed additives in the embodiments of this invention improved the uniformity of estrus and conception rate in female foxes during the breeding season, and increased litter size. As shown in Table 4, during the lactation period, it can increase the weaning survival rate of young animals to over 90%, reduce problems such as diarrhea, weakness, and stunted growth in young animals, and significantly reduce the mortality rate in animal husbandry. Neither single insect oil nor ordinary insect oil in the comparative examples can achieve the technical effects of this invention.

[0077] In summary, the feed additive prepared in this invention contains high levels of linoleic acid and oleic acid (n-6 series fatty acids) in mealworm oil, which can effectively promote the development of sebaceous glands in fur-bearing animals, increase sebum secretion, enhance the luster and suppleness of fur, and provide basic nutritional support for hair follicle growth. Black soldier fly oil is rich in medium-chain fatty acids such as α-linolenic acid (n-3 series fatty acids), lauric acid, and caprylic acid, which have antibacterial and anti-inflammatory properties, helping to improve intestinal health and enhance immunity. The combination of these two additives can regulate the n-6 / n-3 fatty acid ratio in fur-bearing animals to the physiologically optimal range, balancing the three major metabolic pathways of growth, anti-inflammation, and reproduction, thereby effectively improving the weight gain, fur quality, reproductive output, and offspring survival rate of fur-bearing animals.

[0078] The additive prepared by this invention, after being stored at room temperature in a sealed container for 12 months, showed no stratification or oxidative rancidity, with a peroxide value change rate of ≤5%. This is attributed to the compound stabilizing and synergistic system of this invention, which can form a dense protective film on the surface of oils, blocking oxygen from contacting unsaturated fatty acids and inhibiting oxidative rancidity of oils. At the same time, it improves the emulsification compatibility of oils with water-based feed systems, avoids oil stratification and sedimentation, and effectively improves the overall uniformity and nutrient absorption rate of feed.

[0079] Obviously, the specific implementation schemes described above are merely a further detailed explanation of the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above descriptions are only specific examples of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compound insect oil feed additive, characterized in that, The additive comprises the following components by mass percentage: 93.0%–98.0% compound insect base oil and 2.0%–7.0% compound stabilizing and enhancing system; the compound insect base oil is a compound of black soldier fly oil and yellow mealworm oil, and the compound stabilizing and enhancing system is composed of fat-soluble antioxidant components, bio-emulsifying components, and fur development enhancing components.

2. The compound insect oil feed additive according to claim 1, characterized in that, The mass ratio of black soldier fly oil to yellow mealworm oil is 1:1.5 to 1.5:

1.

3. The compound insect oil feed additive according to claim 1, characterized in that, The fat-soluble antioxidant component is selected from one or more of the following: fat-soluble vitamin E, coenzyme Q10, BHA, and BHT.

4. The compound insect oil feed additive according to claim 1, characterized in that, The bio-emulsifying component is selected from one or two of soybean lecithin and glyceryl monostearate.

5. The compound insect oil feed additive according to claim 1, characterized in that, The fur growth-enhancing component is selected from one or more of phytosterols, ceramides, squalane, and panthenol.

6. The compound insect oil feed additive according to claim 1, characterized in that, The mass percentage content of each component in the composite stabilizing and enhancing system is as follows: 0.3% to 1.2% fat-soluble antioxidant component, 1.5% to 5% bio-emulsifying component, and 0.2% to 0.8% fur development enhancing component.

7. A method for preparing a compound insect oil feed additive according to any one of claims 1-6, characterized in that, The process includes the following steps: adding yellow mealworm oil and black soldier fly oil according to the specified ratio, stirring at 38-42℃ and 250-350 r / min at low speed for 10-20 minutes to ensure uniform mixing; sequentially adding fat-soluble antioxidants and fur-enhancing components, stirring for 5-10 minutes; then adding bio-emulsifying components, heating to 42-45℃, and homogenizing at 650-850 r / min at high speed for 20-40 minutes; dehydrating and degassing the emulsified composite oil under vacuum conditions of -0.08 to -0.1 MPa and 40℃ for 10-15 minutes; and finally, aseptically filtering through a 200-mesh filter to obtain the final product.

8. A feed specifically for fur-bearing animals comprising the compound insect oil feed additive according to any one of claims 1-6, characterized in that, The amount of the additive added is 1.2% to 4.8% of the total feed mass.

9. The application of the compound insect oil feed additive according to any one of claims 1-6 in the breeding of fur-bearing animals at different physiological stages, characterized in that, The aquaculture applications at different physiological stages are as follows: a. Growing period: The additives shall account for 1.8% to 3.0% of the total mass of the basal diet; b. Winter growing season: The additives mentioned herein shall constitute 3.2% to 4.8% of the total mass of the basal diet; c. Breeding period: The additives shall account for 1.2% to 2.2% of the total mass of the basal diet; d. During lactation: The additives shall be 1.8% to 3.0% of the total mass of the basal diet.

10. The application according to claim 9, characterized in that, The compound insect oil feed additive has one or more of the following functions: i. Increase growth weight during the rearing period; ii. Promotes the growth of guard hairs and down, increases down density, softness and luster, and improves fur quality; iii. Improve reproductive capacity; iv. Improve the survival rate of cubs.

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