A coat conditioning composition for improving the quality of pet cat hair and its use

Abstract

This invention discloses a coat-enhancing composition for improving the quality of cat fur and its application, belonging to the field of pet food technology. The composition uses a high proportion of fresh chicken meat and fresh bone-in chicken thigh meat as the main protein source, combined with krill oil, fresh chicken liver, various natural plant powders, and compound nutrients, formulated in a scientific ratio. Animal experiments have verified that this invention can significantly increase the amino acid content of cat fur, improve fur luster and saturation, enhance tensile strength, and optimize hair cuticle structure, without adversely affecting the cat's weight, blood routine, blood biochemistry, or other health indicators, demonstrating safety and high efficacy. This invention can be widely applied to the preparation of functional fresh meat baked food for improving the quality of cat fur.

Description

Technical Field

[0001] This invention belongs to the field of pet food technology, specifically relating to a coat-enhancing composition for improving the quality of a cat's coat and its application in the preparation of cat food. Background Technology

[0002] The quality of a cat's coat is a core external indicator reflecting its nutritional status, skin health, and overall welfare. Its evaluation system encompasses multiple dimensions, including coat luster, color saturation, tensile strength, cuticle structure integrity, amino acid composition, and shedding amount. With the increasing sophistication of pet care, consumer demand for cat food has evolved from basic satiety and nutritional balance to targeted functional improvements. Among these, "beautiful coat, healthy skin, reduced shedding, and improved smoothness" have become core consumer pain points in the cat food market.

[0003] From a physiological perspective, the main component of cat hair is keratin, whose synthesis depends on the supply of high-quality complete proteins, sulfur-containing amino acids, branched-chain amino acids, and other raw materials. The luster and smoothness of the hair depend on the density of the hair cuticles and the uniformity of the oil distribution, which are closely related to Omega-3 / Omega-6 polyunsaturated fatty acids, lecithin, and fat-soluble vitamins. The toughness and breakage resistance of the hair are determined by the stability of the hair shaft structure, the number of disulfide bonds, and trace elements (zinc, copper, and manganese). The brightness and saturation of the coat color are affected by the level of antioxidants, hair follicle microcirculation, and pigment stability, and are easily weakened by oxidative stress, nutritional imbalance, and deterioration of dietary oils.

[0004] Most cat foods on the market currently focus on providing basic nutrition, with few functional formulas specifically designed to improve the overall appearance of a cat's coat, and most lack authoritative animal testing data to support their claims. For example, Chinese invention patent application CN202510351406.2 discloses a composition, dry pet food, and preparation method for improving a pet's coat. It uses a blend of safflower seed oil, fish oil, soybean oil, and krill oil, combined with perilla seed extract, to reduce shedding and improve smoothness through a multi-oil combination. However, it does not specify the amino acid content and keratin synthesis efficiency in the coat, resulting in limited improvement in coat strength, and its long-term safety is unknown. Chinese invention patent application CN201710268555.8 discloses a coat-enhancing cat food that, by adding fish oil, egg yolk powder, various vitamins, and sulfur-containing amino acids, effectively nourishes the cat's skin, enhances coat shine, and reduces shedding, achieving a noticeable coat-enhancing effect suitable for long-term consumption. However, it is primarily composed of ordinary meat and grains, with a low proportion of fresh meat and insufficient raw materials for keratin synthesis, making it difficult to achieve fundamental improvement in coat appearance, and its long-term effects are limited.

[0005] Therefore, developing a safe, efficient, and effective coat-enhancing composition that can significantly improve the shine, strength, and smoothness of a cat's fur has significant market value and application prospects. Based on this, the present invention is proposed. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies that lack functional products for systematically improving hair quality, this invention provides a hair-enhancing composition for improving the hair quality of pet cats and its application in the preparation of pet cat food. The hair-enhancing composition uses a high proportion of fresh chicken meat and fresh bone-in chicken thigh meat as the main protein source, combined with krill oil, fresh chicken liver, various natural plant powders, and compound nutrients, and is scientifically formulated. Animal experiments have verified that this invention can significantly increase the amino acid content of pet cat hair, improve hair luster and saturation, enhance tensile strength, and optimize hair cuticle structure, without adversely affecting the pet cat's weight, blood routine, blood biochemistry, or other health indicators, making it safe and effective. This invention can be widely used in the preparation of functional fresh meat baked food to improve the hair quality of pet cats.

[0007] The present invention achieves the above-mentioned technical effects through the following technical solutions: The purpose of this invention is to provide a coat-enhancing composition that improves the quality of a cat's coat. This composition uses a high proportion of fresh meat as the core protein source, combined with krill oil, natural plant ingredients, and compound nutrients. It can significantly increase the amino acid content of a cat's coat, enhance the shine and strength of the coat, and optimize the cuticle structure, thereby achieving a comprehensive and stable coat-enhancing effect.

[0008] A coat-enhancing composition for improving the quality of a pet cat's coat comprises the following components: 55%–65% fresh chicken meat, 20%–25% fresh bone-in chicken thigh meat, 2%–4% krill oil, 2%–4% fresh chicken liver, 0.05%–0.15% krill powder, 0.05%–0.15% tapioca starch, 0.05%–0.15% potato starch, 0.05%–0.15% pumpkin powder, 0.05%–0.15% yam powder, 0.05%–0.15% carrot powder, 0.05%–0.15% yucca powder, 0.05%–0.15% chicory root powder, 0.05%–0.15% cranberry powder, and 0.05%–0.15% compound nutrients.

[0009] The compound nutrients in the aforementioned coat-enhancing composition include: taurine, sodium chloride, potassium chloride, dicalcium phosphate, protein iron, protein copper, protein manganese, protein zinc, potassium iodide, yeast selenium, lecithin, vitamin A acetate, vitamin D3, dl-α-tocopherol acetate, thiamine nitrate, riboflavin, pyridoxine hydrochloride, cyanocobalamin, D-calcium pantothenate, nicotinamide, rosemary extract, folic acid, D-biotin, and choline chloride. These compound nutrients primarily supplement trace elements and other essential components for the body; the content of each component conforms to industry-standard specifications.

[0010] The coat-enhancing composition of this invention provides a high-quality animal protein composition with high digestibility. Fresh bone-in chicken thigh meat supplements the relatively insufficient calcium and collagen in chicken meat. Fresh chicken liver provides vitamin A, which cats cannot synthesize themselves. Krill oil and krill powder form a dual coat-enhancing system of "oil-soluble rapid absorption + water-soluble slow-release supplementation," facilitating intestinal absorption. Pumpkin powder, yam powder, and carrot powder are all processed using low-temperature freeze-drying technology, preserving natural vitamins and dietary fiber. Yucca powder and chicory root powder promote the growth and reproduction of beneficial bacteria in the intestines, inhibit harmful bacteria, maintain intestinal microecological balance, and thus improve the digestibility and absorption rate of nutrients. The coat-enhancing composition of this invention follows a scientific formulation logic of "high-meat base + precise coat-enhancing targeting + intestinal absorption empowerment + comprehensive nutritional support." Targeting the core needs of cats' pure carnivorous physiological characteristics and coat health, it systematically improves coat quality from four dimensions—nutrient supply, absorption and utilization, skin barrier repair, and hair growth regulation—through the synergistic effect of multiple components and multiple targets, rather than simply modifying the surface of a single component.

[0011] Preferably, the coat-enhancing composition for improving the quality of a pet cat's coat comprises the following components: fresh chicken meat: 62%, fresh bone-in chicken thigh meat: 23%, krill oil: 3%, fresh chicken liver: 3%, and pumpkin powder, yam powder, carrot powder, and cranberry powder: 0.1% each. This formulation ratio yields the best coat-enhancing effect. This composition not only has good safety but also significantly increases the amino acid content of the hair, resulting in a significant enhancement of the hair's tensile strength, elongation, and breaking strength.

[0012] Preferably, the pumpkin powder, yam powder, and carrot powder in the wool-beautifying composition are all prepared by low-temperature freeze-drying process, specifically including the following steps: Select fresh, mature raw materials, peel and remove impurities, rinse with running water and drain, then cut into uniform thin slices, blanch in purified water at 90-95℃ for 60-90 seconds, and immediately immerse in an ice water bath at 0-4℃ to cool to a core temperature ≤10℃ and drain; rapidly freeze the slices at -40℃ to -45℃ for 2-3 hours until the core temperature of the material reaches below -35℃ and keep warm for 2 hours; then vacuum to 15-25Pa, sublimate and dry at -15℃ to -10℃ for 12-16 hours, then heat to 35-40℃ and vacuum 5-10Pa for 4-6 hours to desorb and dry until the moisture content is ≤5%; finally, pulverize through an 80-100 mesh sieve at ≤20℃ and relative humidity ≤40% to obtain the final product.

[0013] Another object of the present invention is to provide a method for preparing the above-described composition, the method comprising the following steps: (1) Wash the fresh chicken, fresh bone-in chicken leg meat and fresh chicken liver, remove the tendons and impurities, and mince them into a uniform 3mm meat paste using a meat grinder; (2) Mix the krill powder, tapioca starch, potato powder, pumpkin powder, yam powder, carrot powder, yucca powder, chicory root powder, cranberry powder, and compound nutrients evenly, add them to the above minced meat, and stir at low speed for 10 minutes until the materials are completely combined. During the mixing process, an appropriate amount of process water can be added according to the moisture content of the materials to adjust to a suitable state for puffing (moisture content of about 25%-30%). (3) The mixture is fed into a twin-screw extruder and extruded at 115-125℃ and 2.5-3.5MPa; the extruded granules are then dried in an 80℃ hot air circulating oven until the moisture content is ≤10%. (4) Spray the krill oil evenly onto the surface of the dried granules, cool to room temperature and then seal and package.

[0014] Another object of the present invention is to provide the application of the above composition in the preparation of cat food that improves the quality of a pet cat's coat. Preferably, the cat food is fresh meat baked food or extruded food. The improvement of coat quality includes: increasing the shine and saturation of the coat, increasing the amino acid content of the coat, enhancing the tensile strength of the coat, optimizing the cuticle structure, and improving the smoothness of the coat.

[0015] Example 5 of this invention shows that the composition can effectively improve the coat quality of pet cats. Specifically, after pet cats consume the coat-enhancing composition of this invention, there are no significant changes in weight, blood routine and blood biochemical indicators, indicating good safety. At the same time, the coat quality is significantly improved, specifically manifested in: significantly increased hair amino acid content, improved brightness and saturation, and improved color difference; significantly enhanced tensile strength, elongation and peak strength; and optimized scale structure (reduced thickness, increased height, and reduced diameter).

[0016] The coat-enhancing composition of this invention can significantly increase the amino acid content of pet cat hair, improve hair luster and saturation, enhance tensile strength, and optimize hair cuticle structure. Furthermore, it has no adverse effects on the pet cat's weight, blood routine tests, blood biochemistry, or other health indicators. It is safe and highly effective, and compared with existing technologies, it has the following technical advantages: (1) The formulation of the coat-enhancing composition described in this invention differs from existing coat-enhancing products. Existing commercially available products focus on "oil nourishment," while this invention uses a high proportion of fresh chicken meat and fresh bone-in chicken thigh meat as its core, strengthening hair quality from the source of keratin synthesis. This is a reconstruction of the nutritional foundation, not a simple addition. The formulation follows the logic of "high meat base + precise coat-enhancing targeting + intestinal absorption empowerment + comprehensive nutritional support." Targeting the core needs of pure carnivorous cats for healthy hair, it systematically improves hair quality from four dimensions—nutrient supply, absorption and utilization, skin barrier repair, and hair growth regulation—through the synergistic effect of multiple components and multiple targets.

[0017] (2) The safety of the present invention has been verified by blood routine and blood biochemistry. Example 5 of the present invention shows that the composition can effectively improve the hair quality of pet cats. Specifically, after the pet cats consume the hair-beautifying composition of the present invention, there are no significant changes in weight, blood routine and blood biochemistry indicators, indicating good safety.

[0018] (3) This invention has significant improvement effects compared to existing commercially available products, and the hair quality is significantly improved, specifically: the hair amino acid content is significantly increased, the brightness and saturation are improved, and the color difference is improved; the tensile strength, elongation and peak strength are significantly enhanced; and the scale structure is optimized (thickness is reduced, height is increased, and diameter is reduced). In particular, the improvement in hair amino acid content is something that existing hair beautifying products cannot achieve. Attached Figure Description

[0019] Figure 1. Comparison of the scale structure of a pet cat's fur (A, C, and E are before feeding; B, D, and F are after feeding).

[0020] The image shows that after feeding, the scales become thinner, taller, more uniform in diameter, and have a more complete and smoother structure. Detailed Implementation

[0021] The present invention is further described below through specific embodiments, but those skilled in the art should understand that the embodiments do not limit the scope of patent protection of the present invention in any way.

[0022] Example 1: The coat-enhancing composition of the present invention for improving the quality of pet cat fur

[0023] Formula composition (by weight percentage): 55% fresh chicken, 20% fresh bone-in chicken thigh meat, 2% krill oil, 2% fresh chicken liver, 0.05% krill powder, 0.05% tapioca starch, 0.05% potato starch, 0.05% pumpkin powder, 0.05% yam powder, 0.05% carrot powder, 0.05% yucca powder, 0.05% chicory root powder, 0.05% cranberry powder, and 0.05% compound nutrients.

[0024] Preparation method: Wash fresh chicken meat, fresh bone-in chicken thigh meat, and fresh chicken liver, remove tendons and impurities, and mince them into a uniform 3mm paste using a meat grinder; mix krill powder, tapioca starch, potato starch, pumpkin powder, yam powder, carrot powder, yucca powder, chicory root powder, cranberry powder, and compound nutrients evenly, add them to the above minced meat, and stir at low speed for 10 minutes until the materials are completely combined; during the mixing process, an appropriate amount of process water can be added according to the material moisture to adjust to a suitable state for puffing. Feed the mixture into a twin-screw extruder and puff it into shape at 115-125℃ and 2.5-3.5MPa; place the puffed granules in an 80℃ hot air circulating oven and dry them until the moisture content is ≤10%; spray krill oil evenly on the surface of the dried granules, cool to room temperature, and then seal and package them.

[0025] Example 2: A coat-enhancing composition for improving the quality of a pet cat's coat

[0026] Formula composition (by weight percentage): 60% fresh chicken, 22.5% fresh bone-in chicken thigh meat, 3% krill oil, 3% fresh chicken liver, 0.1% krill powder, 0.1% tapioca starch, 0.1% potato starch, 0.1% pumpkin powder, 0.1% yam powder, 0.1% carrot powder, 0.1% yucca powder, 0.1% chicory root powder, 0.1% cranberry powder, and 0.1% compound nutrients.

[0027] Preparation method: Same as in Example 1.

[0028] Example 3: The coat-enhancing composition of the present invention for improving the quality of pet cat fur

[0029] Formula composition (by weight percentage): 65% fresh chicken, 25% fresh bone-in chicken thigh meat, 4% krill oil, 4% fresh chicken liver, 0.15% krill powder, 0.15% tapioca starch, 0.15% potato starch, 0.15% pumpkin powder, 0.15% yam powder, 0.15% carrot powder, 0.15% yucca powder, 0.15% chicory root powder, 0.15% cranberry powder, and 0.15% compound nutrients.

[0030] Preparation method: Same as in Example 1.

[0031] Example 4: The coat-enhancing composition of the present invention for improving the quality of pet cat fur

[0032] Formula composition (by weight percentage): 62% fresh chicken, 23% fresh bone-in chicken thigh meat, 3% krill oil, 3% fresh chicken liver, 0.1% krill powder, 0.1% tapioca starch, 0.1% potato starch, 0.1% pumpkin powder, 0.1% yam powder, 0.1% carrot powder, 0.1% yucca powder, 0.1% chicory root powder, 0.1% cranberry powder, and 0.15% compound nutrients.

[0033] Preparation method: Same as in Example 1.

[0034] Example 5: Effects and safety testing of the coat-improving composition of the present invention on pet cat coat quality.

[0035] 1. Laboratory animals

[0036] All cats used in this study were from the experimental base of the Shanghai Veterinary Research Institute of the Chinese Academy of Agricultural Sciences, totaling 16 cats. They were divided into a complete cat food group and a coat-enhancing composition group. The complete cat food group consisted of 8 cats fed commercially available complete cat food, while the coat-enhancing composition group consisted of 8 cats fed the coat-enhancing composition described in Example 4 of this invention.

[0037] 2. Feeding and Management

[0038] The cattery must have ample drinking water and good ventilation, and regular vaccinations and deworming must be performed. A complete diet of 100g-200g per day will be used. A two-week acclimatization period will be provided before the experiment officially begins. After the experiment officially begins, the cats will be fed the same diet continuously for 60 days.

[0039] 3. Measurement Indicators

[0040] Regularly measure the cat's weight and assign it a number. Observe the cat's mental state and activity level daily. Simultaneously, collect blood samples for complete blood count and blood biochemistry tests, and record the data. Collect hair samples and analyze parameters such as hair color difference, peak tensile strength, amino acid content, and scale structure.

[0041] Safety evaluation of the coat-enhancing composition of this invention for improving the quality of pet cat fur: 1. The effect of the coat-enhancing composition of the present invention, which improves the quality of a pet cat's coat, on the weight of the pet cat. During the trial period (0-60 days), all cats were in good health and showed good appetite, and no signs of feline gastrointestinal intolerance were observed.

[0042] Table 1. Effect of the coat-improving composition of the present invention on the weight of pet cats.

[0043] 2. The effect of the coat-enhancing composition of the present invention on the blood routine indicators of pet cats.

[0044] The results of the pet cat's routine blood tests are as follows: Table 2. Effects of the coat-improving composition of the present invention on blood routine indicators in pet cats.

[0045] The data in Table 2 show that the blood routine indicators of the pet cats were within the normal range before and after consuming complete cat food and the coat-enhancing composition of the present invention for improving the coat quality of pet cats.

[0046] 3. The effect of the coat-enhancing composition of the present invention on the serum biochemical indicators of pet cats.

[0047] The serum biochemical markers of the pet cat are as follows: Table 3. Effects of the coat-enhancing composition of the present invention on serum biochemical indicators of pet cats.

[0048] The data in Table 3 show that the serum biochemical indicators of the pet cats were within the normal range before and after consuming complete cat food and the coat-enhancing composition of the present invention for improving the coat quality of pet cats.

[0049] Evaluation of effects: The effect of the coat-improving composition of this invention on the coat quality of pet cats.

[0050] 4.1 The effect of the coat-enhancing composition of the present invention on the color difference value of pet cat's coat.

[0051] Table 4 shows that after consuming the coat-enhancing composition of this invention, the brightness and saturation of the cat's fur were significantly improved. The results indicate that the coat-enhancing composition of this invention has a significant effect on improving the color difference of the cat's fur. There was no significant difference in fur brightness and saturation in the complete cat food group compared to before the experiment.

[0052] Table 4. Effect of the coat-enhancing composition of the present invention on the color difference value of pet cat coat.

[0053] Compared with before the experiment, P<0.05 P<0.01

[0054] 4.2 The effect of the coat-enhancing composition of the present invention on the peak breaking force of cat hair.

[0055] As shown in Table 5, after consuming the coat-enhancing composition of this invention, the tensile strength and elongation of the cat's hair were significantly improved. This indicates that the coat-enhancing composition of this invention can significantly increase the peak breaking force of the cat's hair, while the tensile strength and elongation of the complete cat food group showed no significant difference compared with before the experiment.

[0056] Table 5. Effect of the coat-enhancing composition of the present invention on the peak breaking force of cat hair.

[0057] Compared with before the experiment, P<0.05 P<0.01

[0058] 4.3 The effect of the coat-enhancing composition of the present invention on the amino acid content of pet cat hair.

[0059] As shown in Table 6, after consuming the coat-enhancing composition of the present invention to improve the coat quality of pet cats, the total amino acid level of the cat's coat increased significantly, and the coat quality of the pet cats was significantly improved. The total amino acid level of the complete cat food group was not significantly different from that before the experiment.

[0060] Table 6. Effects of the coat-improving composition of the present invention on the amino acid content of pet cats.

[0061] Compared with before the experiment, P<0.05 P<0.01

[0062] 4.4 The effect of the coat-enhancing composition of the present invention on the cuticle structure of pet cat hair.

[0063] After the experiment, hair samples were collected for microscopic observation of the hair structure. Length and scale structure were measured using a scanning electron microscope. Scale thickness was observed using a 15.0kx objective lens, and scale height and hair diameter were observed using a 1.0kx objective lens. After the cats were fed complete cat food, there were no significant differences in hair scale thickness, scale height, and scale diameter compared to before the experiment. Figure 1 The thickness, height, and diameter of the hair scales of pet cats before and after consuming the coat-enhancing composition of this invention are compared. Groups A, C, and E are before the experiment, while groups B, D, and F are groups containing the coat-enhancing composition.

[0064] Experimental results show that after pet cats consumed the coat-improving composition of this invention, which enhances the quality of their fur, the thickness of the hair cuticles significantly decreased, the height of the cuticles significantly increased, and the diameter of the cuticles significantly decreased. Therefore, the hair cuticle structure of the pet cats was significantly improved.

[0065] In summary, based on the pre- and post-experimental data of this project, the composition effectively improves the coat quality of cats. Specifically, after consuming the coat-enhancing composition of this invention, there were no significant changes in the weight, blood routine tests, and blood biochemical indicators of the cats, indicating good safety. Simultaneously, coat quality was significantly improved, specifically manifested in: a significant increase in hair amino acid content, improved brightness and saturation, and reduced color difference; significantly enhanced tensile strength, elongation, and peak strength; and optimized scale structure (reduced thickness, increased height, and reduced diameter). Therefore, consuming the coat-enhancing composition of this invention can significantly improve the coat quality of cats.

Claims

1. A coat-enhancing composition for improving the quality of a pet cat's coat, comprising the following components: 55%–65% fresh chicken meat, 20%–25% fresh bone-in chicken thigh meat, 2%–4% krill oil, 2%–4% fresh chicken liver, 0.05%–0.15% krill powder, 0.05%–0.15% tapioca starch, 0.05%–0.15% potato starch, 0.05%–0.15% pumpkin powder, 0.05%–0.15% yam powder, 0.05%–0.15% carrot powder, 0.05%–0.15% yucca powder, 0.05%–0.15% chicory root powder, 0.05%–0.15% cranberry powder, and 0.05%–0.15% compound nutrients.

2. The coat-enhancing composition for improving the quality of a pet cat's coat according to claim 1, characterized in that, The composition of the hair-enhancing compound contains 62% fresh chicken meat, 23% fresh bone-in chicken leg meat, 3% krill oil, 3% fresh chicken liver, and 0.1% each of pumpkin powder, yam powder, carrot powder, and cranberry powder.

3. The coat-enhancing composition for improving the quality of a pet cat's coat according to claim 1, characterized in that, The complex nutrients include taurine, sodium chloride, potassium chloride, dicalcium phosphate, protein iron, protein copper, protein manganese, protein zinc, potassium iodide, yeast selenium, lecithin, vitamin A acetate, vitamin D3, dl-α-tocopherol acetate, thiamine nitrate, riboflavin, pyridoxine hydrochloride, cyanocobalamin, D-calcium pantothenate, nicotinamide, rosemary extract, folic acid, D-biotin, and choline chloride.

4. The coat-enhancing composition for improving the quality of a pet cat's coat according to claim 1, characterized in that, The pumpkin powder, yam powder, and carrot powder in the aforementioned coat-enhancing composition are all prepared using a low-temperature freeze-drying process.

5. The coat-enhancing composition for improving the quality of a pet cat's coat according to claim 4, characterized in that, The low-temperature freeze-drying process specifically includes the following steps: Select fresh, mature raw materials, peel and remove impurities, rinse with running water, drain, and cut into uniform thin slices. Blanch in purified water at 90-95℃ for 60-90 seconds, then immediately immerse in an ice-water bath at 0-4℃ to cool to a core temperature ≤10℃ and drain. Rapidly freeze the slices at -40℃ to -45℃ for 2-3 hours until the core temperature of the material reaches below -35℃ and keep warm for 2 hours. Then, evacuate to 15-25Pa and sublimate at -15℃ to -10℃ for 12-16 hours. Then, raise the temperature to 35-40℃ and desorption dry at a vacuum of 5-10Pa for 4-6 hours until the moisture content is ≤5%. Finally, pulverize the material through an 80-100 mesh sieve at ≤20℃ and relative humidity ≤40% to obtain the final product.

6. A method for preparing the hair-beautifying composition according to claims 1-5, characterized in that, Specifically, it includes the following steps: (1) Wash the fresh chicken, fresh bone-in chicken thigh meat and fresh chicken liver, remove the tendons and impurities, and mince them into a uniform 3mm meat paste using a meat grinder; (2) Mix the krill powder, tapioca starch, potato powder, pumpkin powder, yam powder, carrot powder, yucca powder, chicory root powder, cranberry powder, and compound nutrients evenly, add them to the above minced meat, and stir at low speed for 10 minutes until the materials are completely combined. During the mixing process, an appropriate amount of process water can be added according to the moisture content of the materials to adjust to a suitable state for puffing. (3) The mixture is fed into a twin-screw extruder and extruded at 115-125℃ and 2.5-3.5MPa; the extruded granules are then dried in an 80℃ hot air circulating oven until the moisture content is ≤10%. (4) Spray the krill oil evenly onto the surface of the dried granules, cool to room temperature and then seal and package.

7. The use of the coat-enhancing composition according to any one of claims 1 to 5 in the preparation of cat food that improves the coat quality of pet cats.

8. The application according to claim 7, characterized in that, The cat food mentioned is either fresh meat baked food or extruded food.

9. The application according to claim 7, characterized in that, The improvements in hair quality include: increasing hair shine and saturation, increasing hair amino acid content, enhancing hair tensile strength, optimizing hair cuticle structure, and improving hair smoothness.

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