Pet food for improving skeletal muscle system function of elderly cat and preparation method thereof

Abstract

The invention discloses a pet food for improving skeletal muscle system functions of elderly cats and a preparation method of the pet food. The pet food comprises the following raw materials in parts by mass: 40-45 parts of fresh chicken, 20-30 parts of fresh duck meat, 10-20 parts of starch, 1-5 parts of alfalfa particles, 1-5 parts of vitamins, 1-3 parts of mineral elements, 0.1-5 parts of probiotics, 0.01-0.2 part of an antioxidant, 1-5 parts of hydrolyzed chicken powder, 1-5 parts of a chicken extract, 1-5 parts of euphausia superba oil, 0.1-0.3 part of hesperidin and 0.1-0.5 part of a eucommia ulmoides extract. Wherein the functional components comprise euphausia superba oil, hesperidin and eucommia ulmoides plant extract, through scientific compatibility of all the components, the bone trabecula structure of cats can be improved through the synergistic effect, the bone density is enhanced, bone mineralization is promoted, cat body fat deposition is reduced, the muscle quality is improved, and therefore the bone muscle system of the cats is comprehensively improved.

Description

Technical Field

[0001] The invention relates to the technical field of animal food, in particular to a pet food for improving the skeletal muscle system function of an elderly cat and a preparation method thereof. Background Art

[0002] The skeletal system is the basic framework of the cat's body structure and carries a variety of physiological functions. As the cat ages, the prevalence of bone, joint and muscle system diseases in cats will gradually increase. Among them, osteoarthritis is a chronic progressive disease that is treated through adaptation to the environment, weight loss, exercise guidance, physical therapy and the use of non-steroidal anti-inflammatory drugs. However, due to the side effects of long-term use of these drugs, alternative treatment options need to be found.

[0003] At present, some products ignore the sustainability and environmental friendliness of raw materials while pursuing efficacy, and only focus on supplementing excess calcium and phosphorus and anti-inflammatory effects on joints, while ignoring the overall improvement of the cat's skeletal muscle system.

[0004] Patent CN112401066A provides a pet food that is beneficial to maintaining bone health. Vitamin K in its combination of various raw materials is easily degraded. Although the invention mentions methods to reduce vitamin loss, it is still challenging to keep vitamins stable in wet food, especially under light, high temperature and long-term storage conditions. EPA is an unsaturated fatty acid that is easily oxidized, which may cause food spoilage and reduced nutritional value. Therefore, there is a certain risk in the stability of the ingredient combination of this invention. The invention mainly focuses on bone health, but ignores the important role of muscle strength in pet activities, resulting in the formula may not be comprehensive enough in supporting the overall athletic ability of pets.

[0005] Patent CN113797310B provides a pet joint health preparation and its preparation method and application. The invention lacks a comprehensive joint health solution. Although the joint health agent mentioned in the background technology contains multiple ingredients, it mainly focuses on chondroitin sulfate, glucosamine and other ingredients, and lacks consideration of muscle strength support, which is crucial for the overall athletic ability and health of pets. Pet health products that require additional feeding are not better than staple food. Staple food has the characteristics of balanced nutrition and convenient feeding. Health products sometimes cause pets to feel rejected.

[0006] Therefore, it is particularly important to produce a cat food that can improve the health of the cat's musculoskeletal system. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a pet food for improving the skeletal muscle system function of elderly cats and a preparation method thereof, providing a cat food with better and more comprehensive effects, which is specifically used to enhance skeletal muscle quality, promote healthy bone development, and prevent and improve the degeneration of the skeletal muscle system of elderly cats.

[0008] Specifically, the pet food for improving the skeletal muscle system function of elderly cats described in the present invention comprises a nutrient main ingredient A, a nutrient main ingredient B, and a functional additive.

[0009] The nutrient main ingredient A comprises the following raw materials in parts by weight: 40-45 parts of fresh chicken, 20-30 parts of fresh duck, 10-20 parts of starch, 1-5 parts of alfalfa granules, 1-5 parts of vitamins, 1-3 parts of mineral elements, 0.1-5 parts of probiotics, and 0.01-0.2 parts of antioxidants;

[0010] The nutrient main ingredient B comprises the following raw materials in parts by weight: 1-5 parts of Antarctic krill oil;

[0011] The functional additive comprises the following raw materials in parts by weight: 0.1-0.3 parts of hesperidin and 0.1-0.5 parts of eucommia extract.

[0012] The antioxidant is selected from at least one of rosemary extract and gallic acid.

[0013] The mineral elements are composed of D-calcium pantothenate, calcium dihydrogen phosphate, amino acid iron complex, amino acid copper complex, amino acid zinc complex, amino acid manganese complex and yeast selenium.

[0014] Furthermore, it also includes a chicken additive, which includes the following raw materials by weight: 1-5 parts of chicken hydrolyzed powder and 1-5 parts of chicken extract.

[0015] Furthermore, the preparation method of the eucommia extract is to extract the active ingredients in eucommia using an organic solvent, comprising: dissolving eucommia in an organic solvent to obtain an eucommia stock solution, filtering the eucommia stock solution using an RO reverse osmosis membrane at a temperature of 20-30°C to obtain an intercepted liquid to increase the concentration of the active ingredients, adding maltodextrin to the intercepted liquid at a mass ratio of 1:0.2-0.5, concentrating and mixing, filtering and removing impurities, and then sending it into a drying device by a high-pressure pump for spraying and drying, and cooling to prevent degradation of heat-sensitive components to obtain a dry eucommia extract powder.

[0016] Furthermore, the starch is selected from at least one of sweet potato starch and cassava starch.

[0017] Furthermore, the vitamins are composed of vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B12, vitamin E, vitamin D3, folic acid, niacin, biotin, and choline.

[0018] Furthermore, the probiotics include one or more of plant Bacillus, Bacillus licheniformis and plant lactobacillus; the number of viable bacteria of the plant Bacillus is 8 to 12×10 8 cfu / kg, and the viable count of the Bacillus licheniformis was 83-87×10 8 cfu / kg, and the viable count of the plant lactobacillus is 8 to 12×10 8 cfu / kg.

[0019] Furthermore, the transmembrane pressure difference of the RO reverse osmosis membrane is controlled at 5-6 MPa, and the membrane flux is controlled at 100-500 L / h.

[0020] The present invention also provides a method for preparing pet food for improving the skeletal muscle system function of elderly cats, comprising the following steps:

[0021] (1) Mixing: Mixing, crushing, and mixing again according to the above-mentioned nutrient main ingredient A according to the above-mentioned proportion, so that the powder is fully mixed and uniform, and the coefficient of variation of the mixing uniformity is ≤5%, thereby obtaining a mixed powder;

[0022] (2) Extrusion molding: The mixed powder is put into the extruder for conditioning, the extrusion temperature is 90-130°C, the time is 1-5 minutes, the required particle shape is selected at the extrusion outlet, the rotation speed of the blade is adjusted, and the particle thickness is required to obtain the cut particles;

[0023] (3) Drying: Drying the cut particles at a temperature of 100-130° C. for 30-60 min, with the moisture content controlled below 8%, to obtain dried particles;

[0024] (4) Primary spraying: The temperature of the dried particles is 50-80° C., and the nutrient main ingredient B is sprayed on the particles while they are still hot according to the ratio, stirred and mixed for 3 min-10 min, and then the chicken extract is sprayed on the particles according to the ratio to obtain particles sprayed once;

[0025] (5) Cooling: Place the sprayed particles in a cooling box and cool them by a cooling fan so that the difference between the material temperature and the room temperature is ≤5°C to obtain cooled particles;

[0026] (6) Secondary spraying: The cooled particles are subjected to secondary spraying, and the spraying order is as follows: hesperidin and eucommia extract are dissolved in 2.5-3.5 parts by weight of water, and sprayed on the surface of the cooled particles, mixed for 5 minutes, and then the dissolved chicken hydrolyzate powder is sprayed according to the ratio to coat the surface of the particles, and mixed for 5 minutes to obtain particles sprayed for the second time;

[0027] (7) Packaging: The particles sprayed by the secondary spraying are screened and impurities are removed before packaging to obtain the pet food of the present invention.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a pet food for improving the skeletal muscle system function of elderly cats and a preparation method thereof, which is an innovative cat food formula. Experiments have shown that the formula incorporates the following key ingredients with synergistic effects: Antarctic krill oil combined with hesperidin and eucommia plant extract. The scientific combination of the components can improve the trabecular structure of cats through synergistic effects, enhance bone density to promote bone mineralization, reduce cat body fat deposition, improve muscle quality, and thus comprehensively improve the skeletal muscle system of cats.

[0030] Compared with existing pet foods, the composition of the present invention has the following other characteristics: Antarctic krill oil is rich in phospholipid-bound n-3 polyunsaturated fatty acids, and the phospholipids have a unique amphiphilic structure that provides better bioavailability. Compared with the triglyceride-type n-3 PUFAs in fish oil, it is easier to be absorbed by the body. It is also rich in astaxanthin with high antioxidant and anti-inflammatory functions, and no preservatives are needed. Hesperidin is a natural bioflavonoid that exists in high concentrations in citrus fruits, while Eucommia ulmoides extract mainly includes polysaccharides, flavonoids, etc. At the same time, experiments have shown that long-term consumption of the three-component scientifically formulated pet food is harmless to the health of cats, and long-term use has a lower risk of gastrointestinal adverse reactions than non-steroidal anti-inflammatory drugs for the treatment of bone and joints. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present invention provides a pet food for improving the skeletal muscle system function of an elderly cat, comprising a nutrient main ingredient A, a nutrient main ingredient B, and a functional additive. The nutrient main ingredient A comprises the following raw materials in parts by weight: 40-45 parts of fresh chicken, 20-30 parts of fresh duck, 10-20 parts of starch, 1-5 parts of alfalfa granules, 1-5 parts of vitamins, 1-3 parts of mineral elements, 0.1-5 parts of probiotics, and 0.01-0.2 parts of antioxidants; the nutrient main ingredient B comprises the following raw materials in parts by weight: 1-5 parts of Antarctic krill oil; the functional additive comprises the following raw materials in parts by weight: 0.1-0.3 parts of hesperidin and 0.1-0.5 parts of eucommia extract.

[0033] As an example, the pet food also includes a chicken additive, which includes the following raw materials by weight: 1-5 parts of chicken hydrolyzed powder and 1-5 parts of chicken extract.

[0034] As an example, the preparation method of the Eucommia ulmoides extract is to extract the active ingredients in Eucommia ulmoides using an organic solvent, including: dissolving Eucommia ulmoides in an organic solvent to obtain an Eucommia ulmoides stock solution, filtering the Eucommia ulmoides stock solution using an RO reverse osmosis membrane at a temperature of 20-30°C to obtain an intercepted liquid, adding maltodextrin to the intercepted liquid at a mass ratio of 1:0.2-0.5, concentrating and mixing, filtering and removing impurities, and then sending it into a drying equipment by a high-pressure pump for spraying, drying, and cooling to obtain a dry Eucommia ulmoides extract powder.

[0035] As an example, the starch is selected from at least one of sweet potato starch and cassava starch.

[0036] As an example, the vitamins are composed of vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B12, vitamin E, vitamin D3, folic acid, niacin, biotin, and choline.

[0037] As an example, the mineral elements are composed of D-calcium pantothenate, calcium dihydrogen phosphate, amino acid iron complex, amino acid copper complex, amino acid zinc complex, amino acid manganese complex, and yeast selenium.

[0038] As an example, the probiotics include one or more of plant Bacillus, licheniformis and plant lactobacillus; the number of viable bacteria of the plant Bacillus is 8 to 12×10 8 cfu / kg, and the viable count of the Bacillus licheniformis was 83-87×10 8 cfu / kg, and the viable count of the plant lactobacillus is 8 to 12×10 8 cfu / kg.

[0039] As an example, the antioxidant includes at least one of rosemary extract and gallic acid.

[0040] As an example, the transmembrane pressure difference of the RO reverse osmosis membrane is controlled at 5-6 MPa, and the membrane flux is controlled at 100-500 L / h.

[0041] The embodiment of the present invention also provides a method for preparing pet food for improving the skeletal muscle system function of elderly cats, comprising the following steps:

[0042] (1) Mixing: Mixing, crushing, and mixing again according to the above-mentioned nutrient main ingredient A according to the above-mentioned proportion, so that the powder is fully mixed and uniform, and the coefficient of variation of the mixing uniformity is ≤5%, thereby obtaining a mixed powder;

[0043] (2) Extrusion molding: The mixed powder is put into the extruder for conditioning, the extrusion temperature is 90-130°C, the time is 1-5 minutes, the required particle shape is selected at the extrusion outlet, the rotation speed of the blade is adjusted, and the particle thickness is required to obtain the cut particles;

[0044] (3) Drying: Drying the cut particles at a temperature of 100-130° C. for 30-60 min, with the moisture content controlled below 8%, to obtain dried particles;

[0045] (4) Primary spraying: The temperature of the dried particles is 50-80° C., and the nutrient main ingredient B is sprayed on the particles according to the ratio while they are still hot, and the mixture is stirred for 3 min-10 min, and then the chicken extract is sprayed on the particles according to the ratio to obtain particles sprayed once;

[0046] (5) Cooling: Place the sprayed particles in a cooling box and cool them by a cooling fan so that the difference between the material temperature and the room temperature is ≤5°C to obtain cooled particles;

[0047] (6) Secondary spraying: The cooled particles are subjected to secondary spraying, and the spraying order is as follows: hesperidin and eucommia extract are dissolved in 2.5-3.5 parts by weight of water, and sprayed on the surface of the cooled particles, mixed for 5 minutes, and then the dissolved chicken hydrolyzate powder is sprayed according to the ratio to coat the surface of the particles, and mixed for 5 minutes to obtain particles sprayed with secondary spraying;

[0048] (7) Packaging: The particles sprayed by the secondary spraying are screened and impurities are removed before packaging to obtain the pet food of the present invention.

[0049] Example 1

[0050] The pet food of this embodiment for improving the skeletal muscle system function of elderly cats comprises the following raw materials in parts by weight: 42 parts by weight of fresh chicken, 25 parts by weight of fresh duck, 15 parts by weight of cassava starch, 5 parts by weight of alfalfa granules, 2 parts by weight of vitamins (vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B12, vitamin E, vitamin D3, folic acid, niacin, biotin, choline), 2 parts by weight of mineral elements (calcium D-pantothenate, calcium dihydrogen phosphate, amino acid iron complex, amino acid copper complex, amino acid zinc complex, amino acid manganese complex, yeast selenium), 10×10 8 cfu / kg plant bacillus 0.5 mass parts, 85×10 8 cfu / kg Bacillus licheniformis and 10×10 8 cfu / kg 0.5 parts by mass of Lactobacillus plantarum, 0.2 parts by mass of gallic acid, 5 parts by mass of Antarctic krill oil, 0.3 parts by mass of hesperidin, 0.5 parts by mass of Eucommia ulmoides extract, 1 part by mass of chicken hydrolyzate powder, and 1 part by mass of chicken extract.

[0051] The preparation method of the Eucommia ulmoides extract of the present embodiment is as follows: the Eucommia ulmoides is dried, ground and dissolved in an ethanol solution to obtain an Eucommia ulmoides stock solution, the Eucommia ulmoides stock solution is filtered using an RO reverse osmosis membrane at a temperature of 25°C, the transmembrane pressure difference of the RO reverse osmosis membrane is controlled at 5.5 MPa, and the membrane flux is controlled at 300 L / h to obtain an intercepted liquid, maltodextrin is added to the intercepted liquid at a mass ratio of 1:0.3, concentrated and mixed, filtered and impurities are removed, and then sent to a drying device by a high-pressure pump for spraying, drying, and cooling to obtain a dry Eucommia ulmoides extract powder.

[0052] A method for preparing a pet food for improving the skeletal muscle system function of an elderly cat in this embodiment comprises the following steps:

[0053] (1) Mixing: Mixing the fresh chicken, fresh duck, starch, alfalfa granules, vitamins, mineral elements, probiotics, and antioxidants according to the above-mentioned proportions, crushing, and mixing again, so that the powders are fully mixed and uniform, and the coefficient of variation of the mixing uniformity is 3%, thereby obtaining a mixed powder;

[0054] (2) Extrusion molding: The mixed powder is put into an extruder for conditioning, the extrusion temperature is 110°C, the time is 3 min, the extrusion outlet is selected to be a cylindrical particle shape, the blade rotation is adjusted, and the particles are cut into particles with a diameter of 0.5 cm to obtain cut particles;

[0055] (3) Drying: Drying the cut particles at 120° C. for 45 min, with the moisture content controlled at 5% to obtain dried particles;

[0056] (4) One-time spraying: The temperature of the dried particles is 60° C., and the Antarctic krill oil is sprayed on the particles according to the above ratio while they are still hot, and the mixture is stirred for 6 minutes, and then the chicken extract is sprayed on the particles according to the above ratio to obtain particles that have been sprayed once;

[0057] (5) Cooling: Place the sprayed particles in a cooling box and cool them by a cooling fan so that the difference between the material temperature and the room temperature is ≤5°C to obtain cooled particles;

[0058] (6) Secondary spraying: The cooled particles are subjected to secondary spraying, the spraying step comprising: dissolving hesperidin and eucommia extract in 3 parts by weight of water, spraying the mixture on the surface of the cooled particles, mixing for 5 minutes, and then spraying the dissolved chicken hydrolyzate powder according to the ratio to coat the surface of the particles, mixing for 5 minutes, to obtain particles subjected to secondary spraying;

[0059] (7) Packaging: The particles sprayed for the second time are screened and impurities are removed before packaging to obtain the pet food of the present invention.

[0060] Example 2

[0061] This embodiment includes 0.1 parts by mass of eucommia extract, 0.1 parts by mass of hesperidin, and 1 part by mass of Antarctic krill oil, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0062] Example 3

[0063] This embodiment includes 0.25 parts by weight of eucommia extract, 0.15 parts by weight of hesperidin, and 2.5 parts by weight of Antarctic krill oil, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0064] Blank group

[0065] The blank group was compared with Example 3 in that hesperidin and eucommia extract were not added, Antarctic krill oil was replaced with rapeseed oil, and the remaining raw material ratios and preparation methods were the same as in Example 1.

[0066] Comparative Example 1

[0067] Compared with Example 3, the difference between this comparative example is that hesperidin and eucommia extract are not added, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0068] Comparative Example 2

[0069] Compared with Example 3, this comparative example differs in that hesperidin and Antarctic krill oil are not added, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0070] Comparative Example 3

[0071] Compared with Example 3, the difference between this comparative example is that no eucommia extract and Antarctic krill oil are added, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0072] Comparative Example 4

[0073] Compared with Example 3, this comparative example differs in that hesperidin is not added, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0074] Comparative Example 5

[0075] Compared with Example 3, this comparative example differs in that no eucommia extract is added, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0076] Comparative Example 6

[0077] Compared with Example 3, this comparative example differs in that Antarctic krill oil is not added, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0078] Comparative Example 7

[0079] The difference between this comparative example and Example 3 is that this comparative example includes 0.6 parts by mass of eucommia extract, 0.15 parts by mass of hesperidin, and 2.5 parts by mass of Antarctic krill oil, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0080] Comparative Example 8

[0081] The difference between this comparative example and Example 3 is that this comparative example includes 0.25 parts by mass of eucommia extract, 0.4 parts by mass of hesperidin, and 2.5 parts by mass of Antarctic krill oil, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0082] Comparative Example 9

[0083] The difference between this comparative example and Example 3 is that this comparative example includes 0.25 parts by mass of eucommia extract, 0.15 parts by mass of hesperidin, and 6 parts by mass of Antarctic krill oil, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0084] Comparative Example 10

[0085] The difference between this comparative example and Example 3 is that this comparative example includes 0.05 parts by mass of eucommia extract, 0.15 parts by mass of hesperidin, and 2.5 parts by mass of Antarctic krill oil, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0086] Comparative Example 11

[0087] The difference between this comparative example and Example 3 is that this comparative example includes 0.15 parts by mass of eucommia extract, 0.05 parts by mass of hesperidin, and 2.5 parts by mass of Antarctic krill oil, and the remaining raw material ratios and preparation methods are the same as those in Example 1.

[0088] Comparative Example 12

[0089] The difference between this comparative example and Example 3 is that this comparative example includes 0.15 parts by mass of eucommia extract, 0.15 parts by mass of hesperidin, and 0.05 parts by mass of Antarctic krill oil, and the remaining raw material proportions and preparation methods are the same as those in Example 1.

[0090] Animal testing examples

[0091] 96 cats (British short blue cats, rural cats) aged ≥6 years and similar in physical condition were selected from a cat breeding base, with a similar number of each breed and gender, weighing 3-7kg, and half of each gender. All cats were randomly assigned to each embodiment, blank example and comparative example, with 6 cats in each group, and each cat was raised separately in a pet cat cage, wherein each cat in the test group was fed 100g of test grain per day, with a pre-feeding period of 5 days and a formal test period of 30 days; necessary immunization and deworming treatment were performed before the test. Clean the pens and keep the pet pens clean every day.

[0092] After the formal experiment began, each cat was given 300 ml of clean drinking water every day and fed once every morning at 9:00. During the trial period, all cats were observed for their eating habits, mental state, and whether they had anorexia, vomiting, diarrhea and other adverse reactions. After the formal experiment was completed, the cats' body composition and blood inflammatory indicators were measured.

[0093] 1. Body composition measurement (dual-energy X-ray absorptiometry on the 90th day): (1) Body fat percentage measurement; (2) Static parameters of the femur bone in the hind limb: tissue volume (Bone volume, BV), fractal dimension (Fractal dimension, FD), trabecular number (Trabecular number, TB.N), trabecular separation (Trabecular separation, Tb.Sp), trabecular thickness (Trabecular thickness, Tb.Th); (3) Bone mineral density (Bone mineral density, BMD) in the hind limb.

[0094] 2. Blood inflammation indicators (blood samples were drawn on the 0th and 90th days of the formal trial period): Tumor Necrosis Factor-alpha (TNF-α), Transforming Growth Factor-beta (TGF-β), Interleukin-10 (IL-10), Interleukin-1beta (IL-1β).

[0095] The test results are shown in Table 1 below.

[0096] Table 1 Results of blood inflammatory factors and body composition determination

[0097]

[0098]

[0099]

[0100] Note: 1. All data are expressed as mean ± standard error. If not specified, one-way analysis of variance was used. 2. Data in the same row with the same letter or no letter indicates no significant difference (P>0.05); data with different lowercase letters indicates significant difference (P<0.05).

[0101] From the blood inflammatory factor test results in Table 1, it can be seen that compared with the blank group, the pro-inflammatory factor TNF-α in the serum of Examples 1-3 was significantly reduced and the anti-inflammatory factor IL-10 was significantly increased. The body composition analysis results showed that body fat was significantly reduced and skeletal muscle mass, BMD, and TB.N were significantly increased, indicating that the dosages of the compositions of Examples 1-3 all had excellent anti-inflammatory and skeletal muscle body composition improvement effects, and there was no significant difference between Examples 1-3. Compared with the blank group, there was no significant difference in the results of TNF-α, IL-10, body fat, skeletal muscle mass, BMD, and TB.N in the comparative examples 1-6, and the TNF-α, IL-10, body fat, skeletal muscle mass, BMD, and TB.N in Examples 1-3 were significantly higher than those in Comparative Examples 1-6, indicating that at the same dosage level, the anti-inflammatory and skeletal muscle body composition improvement effects of the comparative examples 1-6 were significantly lower than those of the functional compositions of Example 3. And the comparative examples 1-3 lacking multiple components are worse than the comparative examples 4-6 lacking a single component; there is no significant difference between comparative examples 7-12 and the blank group, and embodiment 3 is significantly higher than the comparative example 7-12 group, indicating that the comparative examples 7-12 have little effect on the anti-inflammatory effect of cat skeletal muscle. In addition, the cats in the test examples of the present invention have good feeding conditions and mental conditions, without any gastrointestinal adverse reactions such as anorexia, vomiting, diarrhea, etc.

[0102] In summary, the pet food of the present invention can improve inflammation in cats through a synergistic effect, improve the trabecular structure of cats, enhance bone density to promote bone mineralization, reduce body fat deposition in cats, improve muscle quality, and thus comprehensively improve the skeletal muscle system of cats by scientifically combining Antarctic krill oil, hesperidin and eucommia extract.

[0103] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A pet food for improving the skeletal muscle system function of elderly cats, characterized in that: Including nutrient main ingredient A, nutrient main ingredient B, and functional additives; The nutrient main ingredient A comprises the following raw materials in parts by weight: 40-45 parts of fresh chicken, 20-30 parts of fresh duck, 10-20 parts of starch, 1-5 parts of alfalfa granules, 1-5 parts of vitamins, 1-3 parts of mineral elements, 0.1-5 parts of probiotics, and 0.01-0.2 parts of antioxidants; The nutrient main ingredient B comprises the following raw materials in parts by weight: 1-5 parts of Antarctic krill oil; The functional additive comprises the following raw materials in parts by weight: 0.1-0.3 parts of hesperidin and 0.1-0.5 parts of eucommia extract.

2. A pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: It also includes chicken additives, which include the following raw materials by mass: 1-5 parts of chicken hydrolyzed powder and 1-5 parts of chicken extract.

3. The pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: The preparation method of the eucommia extract is to extract the active ingredients in eucommia by using an organic solvent, specifically comprising: dissolving eucommia in an organic solvent to obtain an eucommia stock solution, filtering the eucommia stock solution using an RO reverse osmosis membrane to obtain an interception liquid; adding maltodextrin to the interception liquid at a mass ratio of 1:0.2-0.5, concentrating and mixing, filtering and removing impurities, and then spraying, drying, and cooling to obtain the eucommia extract.

4. The pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: The starch is selected from at least one of sweet potato starch and cassava starch.

5. The pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: The vitamins consist of vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B12, vitamin E, vitamin D3, folic acid, niacin, biotin and choline.

6. The pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: The mineral elements consist of D-calcium pantothenate, calcium dihydrogen phosphate, amino acid iron complex, amino acid copper complex, amino acid zinc complex, amino acid manganese complex and yeast selenium.

7. The pet food for improving the skeletal muscle system function of elderly cats according to claim 1, characterized in that: The antioxidant comprises at least one of rosemary extract and gallic acid.

8. The pet food for improving the skeletal muscle system function of elderly cats according to claim 6, characterized in that: The transmembrane pressure difference of the RO reverse osmosis membrane is controlled at 5-6Mpa, and the membrane flux is controlled at 100-500L / h.

9. A method for preparing pet food for improving the skeletal muscle system function of elderly cats as claimed in claims 1 to 8, characterized in that: The steps include: (1) Mixing: mixing, crushing and mixing again according to the above-mentioned nutrient main ingredient A in the above-mentioned proportion, wherein the coefficient of variation of the mixing uniformity is ≤5%, to obtain a mixed powder; (2) Puffing: Puffing and shearing the mixed powder at a temperature of 90-130°C for 1-5 min to obtain cut particles; (3) Drying: Drying the cut particles at a temperature of 100-130° C. for 30-60 min, with the moisture content controlled below 8%, to obtain dried particles; (4) primary spraying: the temperature of the dried particles is 50-80° C., and the nutrient main ingredient B is sprayed on the particles while they are still hot according to the ratio, and then the chicken extract is sprayed on the particles according to the ratio to obtain particles that have been sprayed once; (5) Cooling: Cooling the sprayed particles so that the temperature difference between the particles and the room temperature is ≤5°C to obtain cooled particles; (6) Secondary spraying: spraying the cooled particles for a second time, dissolving hesperidin and eucommia extract in 2.5-3.5 parts by weight of water, spraying the mixture on the surface of the cooled particles, and then spraying the dissolved chicken hydrolyzate powder according to the ratio to obtain particles sprayed for a second time; (7) Packaging: The particles sprayed by the secondary spraying are screened and impurities are removed before packaging to obtain the pet food of the present invention.

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