Powdery natural nutritional supplement for dogs and cats and preparation method thereof

Abstract

The invention relates to a powdery natural nutritional supplement for dogs and cats and a preparation method thereof. The powdery natural nutritional supplement comprises the following components: 26-39% of plant seeds, 14-22% of calcium powder, 14-20% of beef liver powder, 6-12% of a yeast nutrition derivative, 6-15% of an aquatic product extract, 10-19% of a marine plant compound and 1.5-3% of sodium chloride. During preparation, the plant seeds, the calcium powder, the beef liver powder, the yeast nutrition derivative, the aquatic product extract, the marine plant compound and the sodium chloride are stirred and mixed uniformly at a low speed by a double-shaft mixer to obtain the homogeneous powdery natural nutritional supplement for dogs and cats. Various natural food materials are scientifically proportioned, and multiple technological means such as low-temperature crushing, hot air drying, hydrolysis extraction and spray drying are adopted, so that active nutritional ingredients are effectively reserved, and the nutrient absorption rate and bioavailability are improved.

Description

Technical Field

[0001] The present invention relates to a premix for dogs and cats, and particularly to a powdery natural nutritional supplement for dogs and cats and a preparation method thereof. Background Art

[0002] At present, with the rapid development of the pet food industry, more and more pet owners tend to make pet meals by themselves to ensure the freshness and safety of the ingredients. However, there are many problems with homemade pet food in terms of nutritional balance, such as lack of key minerals, vitamins, essential fatty acids, etc. Long-term intake of a single food may lead to malnutrition in pets, affecting growth and development, immunity, and overall health. Currently, pet nutritional supplements on the market mainly include compound vitamin powders, mineral additives, etc. These products usually use a single synthetic nutrient supplementation method and have the following deficiencies:

[0003] The composition is single and it is difficult to simulate the nutrition of natural food. Most nutritional supplements use synthetic vitamins or minerals and lack the synergistic effects of natural ingredients, such as trace elements, antioxidants, and bioactive substances;

[0004] The palatability is poor. Synthetic nutrients may cause an unpleasant taste, affecting the appetite and compliance of pets;

[0005] The digestion and absorption rate is low. The bioavailability of some inorganic minerals and synthetic nutrients is low and they are not easily absorbed effectively by the pet's body;

[0006] Lack of food-grade processing technology. Some pet nutritional supplements use a rough processing method and are not subjected to cooking, drying, or hydrolysis treatment. The component stability is poor and it is easy to get damp and deteriorate during long-term storage. Summary of the Invention

[0007] The object of the present invention is to overcome the deficiencies of the prior art and provide a powdery natural nutritional supplement for dogs and cats and a preparation method thereof.

[0008] The object of the present invention is achieved by the following technical solutions:

[0009] The powdery natural nutritional supplement for dogs and cats is characterized in that the mass percentage content of its components is: plant seeds 26-39%, calcium powder 14-22%, beef liver powder 14-20%, yeast nutritional derivatives 6-12%, aquatic product extract 6-15%, marine plant complex 10-19%, sodium chloride 1.5-3%.

[0010] Furthermore, for the above-mentioned powdery natural nutritional supplement for dogs and cats, the mass percentage content of the plant seeds component is: powdered sunflower seed oil 20-30%, fennel seed powder 35-45%, pumpkin seed crude extract 35-40%.

[0011] Furthermore, for the above-mentioned powdered natural nutritional supplement for dogs and cats, the mass percentage content of the calcium powder components is as follows: eggshell powder 55 - 65%, calcium carbonate 40 - 45%.

[0012] Furthermore, for the above-mentioned powdered natural nutritional supplement for dogs and cats, the mass percentage content of the yeast nutritional derivatives is as follows: yeast hydrolysate 45 - 50%, brewer's yeast powder 45 - 50%.

[0013] Furthermore, for the above-mentioned powdered natural nutritional supplement for dogs and cats, the mass percentage content of the aquatic product extract is as follows: green mussel extract 45 - 55%, fish oil powder 40 - 50%.

[0014] Furthermore, for the above-mentioned powdered natural nutritional supplement for dogs and cats, the mass percentage content of the marine plant complex is as follows: seaweed powder 20 - 25%, spirulina powder 55 - 80%.

[0015] The preparation method of the powdered natural nutritional supplement for dogs and cats of the present invention includes the following steps:

[0016] a) Preparation of plant seeds:

[0017] Emulsify sunflower seed oil at an emulsification temperature of 50 - 60°C for 20 - 30 minutes, then perform spray drying at an inlet air temperature of 140 - 180°C, an outlet air temperature of 60 - 80°C, and a vacuum degree of -0.07 MPa to -0.09 MPa to prepare it into a powder form;

[0018] Crush fennel seeds and pumpkin seeds separately through a 120 - 150 - mesh low - temperature pulverization to make fine powders and sieve them to obtain fennel seed powder and pumpkin seed crude extract, making the components uniform and maintaining the activity;

[0019] b) Preparation of calcium powder:

[0020] After cleaning and disinfecting the eggshells, dry and sterilize them at 100 - 120°C for 30 - 40 minutes, and then separately crush and sieve them through a 140 - 160 - mesh low - temperature pulverization to make the powder fineness and hygiene safe;

[0021] c) Preparation of beef liver powder:

[0022] Steam - cook and ripen the beef liver, then dry it with hot air at 60 - 70°C for 6 - 10 hours to reduce anti - nutritional factors and improve the taste, and then crush it through a 120 - 150 - mesh low - temperature pulverization to prepare a powder and sieve it;

[0023] d) Preparation of yeast nutritional derivatives:

[0024] The yeast is enzymatically hydrolyzed at 38°C to 42°C for 1.5 to 2 hours. After the brewer's yeast is dried by hot air at 50°C to 60°C for 45 to 90 minutes, it is then pulverized at a low temperature through a 120- to 150-mesh sieve to make a fine powder and sieved to ensure the high activity and nutritional value of the yeast components;

[0025] e) Preparation of aquatic product extract:

[0026] The green mussels are extracted by ultrasonic assistance with a power of 80W to 120W for 30 to 40 minutes;

[0027] After emulsifying the fish oil, it is made into a powder by spray drying, with an inlet air temperature of 140 to 180°C, an outlet air temperature of 60 to 80°C, and a vacuum degree of -0.07MPa to -0.09MPa, to improve palatability and stability;

[0028] f) Preparation of marine plant complex:

[0029] The dry seaweed and dry spirulina are respectively dried at a low temperature of 38°C to 45°C under vacuum for 2 to 3 hours, and then pulverized at a low temperature through a 120- to 150-mesh sieve to make a fine powder and sieved to ensure nutritional components and biological activity;

[0030] g) Preparation of sodium chloride:

[0031] The sodium chloride is sieved through a 120- to 150-mesh sieve to make the particle size uniform and improve the uniformity and stability of the finished product;

[0032] h) Homogeneous mixing:

[0033] The plant seeds, calcium powder, beef liver powder, yeast nutritional derivatives, aquatic product extracts, marine plant complexes, and sodium chloride prepared above are mixed evenly by low-speed stirring with a double-shaft mixer at a rotation speed of 40 to 60 rpm for 30 to 60 minutes to obtain a homogeneous powdered natural nutritional supplement for dogs and cats.

[0034] Furthermore, in the preparation method of the above-mentioned powdered natural nutritional supplement for dogs and cats, the mixed finished product powder is dried at a low temperature of 45°C to 65°C for 30 to 40 minutes to remove residual moisture, and is sieved through a 120- to 150-mesh sieve before packaging.

[0035] The present invention has remarkable advantages and beneficial effects compared with the prior art, which are specifically embodied in the following aspects:

[0036] ① The present invention adopts a scientific ratio of multiple natural ingredients and a multi-stage temperature control process combining "low-temperature crushing, hot air drying, enzymatic extraction, and spray drying" to adapt to the physical and thermal stability characteristics of various natural ingredients, effectively retain active nutrients, and improve nutrient absorption rate and bioavailability; beef liver is combined with hot air drying and crushing to destroy anti-nutritional factors while retaining liver-derived vitamins and heme iron; yeast hydrolyzate promotes protein pre-digestion through enzymatic hydrolysis and improves the release rate of amino acids; green mussels use ultrasound-assisted extraction to improve the bioavailability of fat-soluble components such as EPA and DHA; based on the process strategy matching the characteristics of raw materials, the technical link of "source, stability, release, and absorption" of nutrition is opened up;

[0037] ② The present invention realizes microencapsulation by emulsifying liquid sunflower oil and fish oil and then embedding the oil into powder particles by spray drying. This not only prevents the oil from being oxidized and rancid and adsorbed and bonded in the product, but also ensures uniform distribution and intake during feeding, thereby improving the absorption efficiency of essential fatty acids such as DHA and linoleic acid in dogs and cats. Compared with the traditional method of directly adding liquid oil, this method solves the problem of uneven oil addition in homemade pet meals, and significantly improves the palatability, safety and convenience of meal preparation.

[0038] ③ The present invention innovatively combines various raw materials such as plant seeds, marine plants, animal offal, aquatic extracts, yeast derivatives and calcium source powder into a homogeneous powder product with uniform particle size through a double-axis mixer; its ingredient design not only covers calcium, iron, zinc, vitamin A and other micronutrients commonly lacking in dogs and cats, but also uses natural antioxidant factors such as pumpkin seed extract and spirulina to provide basic immune support, while enhancing intestinal absorption and anti-inflammatory capabilities through yeast peptides and mussel extracts; the formula does not rely on synthetic chemical supplements, but achieves multi-system synergistic supplementation through food-based nutritional combinations, which is highly suitable for modern pet owners' feeding method based on raw / cooked food supplemented with supplements, and is especially suitable for the elderly, convalescents, and immunocompromised dogs and cats.

[0039] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by practicing the specific embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, a specific implementation scheme is now described in detail.

[0041] The powdered natural nutritional supplement for dogs and cats of the present invention has the following mass percentage contents of components: 26 - 39% of plant seeds, 14 - 22% of calcium powder, 14 - 20% of beef liver powder, 6 - 12% of yeast nutritional derivatives, 6 - 15% of aquatic product extracts, 10 - 19% of marine plant complex, and 1.5 - 3% of sodium chloride.

[0042] Among them, the mass percentage content of plant seeds is: 20 - 30% of powdered sunflower seed oil, 35 - 45% of fennel seed powder, and 35 - 40% of crude pumpkin seed extract. The mass percentage content of calcium powder is: 55 - 65% of eggshell powder and 40 - 45% of calcium carbonate. The mass percentage content of yeast nutritional derivatives is: 45 - 50% of yeast hydrolysate and 45 - 50% of brewer's yeast powder. The mass percentage content of aquatic product extracts is: 45 - 55% of green mussel extract and 40 - 50% of fish oil powder. The mass percentage content of marine plant complex is: 20 - 25% of seaweed powder and 55 - 80% of spirulina powder.

[0043] Example 1

[0044] a) Preparation of plant seeds:

[0045] 600 grams of sunflower seed oil is emulsified at a temperature of 50°C for 20 minutes, and then spray-dried at an inlet air temperature of 140°C, an outlet air temperature of 60°C, and a vacuum degree of -0.07 MPa to prepare a powder;

[0046] 1400 grams of fennel seeds and 1200 grams of pumpkin seeds are respectively pulverized through a 120-mesh sieve at low temperature to obtain fennel seed powder and crude pumpkin seed extract, making the components uniform and maintaining the activity;

[0047] b) Preparation of calcium powder:

[0048] 900 grams of eggshells are cleaned and disinfected, dried and sterilized at 100°C for 30 minutes, and then pulverized through a 140-mesh sieve at low temperature together with 500 grams of calcium carbonate to make the powder fineness and hygienic safety;

[0049] c) Preparation of beef liver powder:

[0050] 6500 grams of beef liver is steamed and cooked, dried in hot air at 70°C for 6 hours to reduce anti-nutritional factors and improve the taste, and then pulverized through a 120-mesh sieve at low temperature to prepare a powder and sieve it;

[0051] d) Preparation of yeast nutritional derivatives:

[0052] 700 grams of yeast is enzymolyzed at 38°C for 1.5 hours, and 1600 grams of brewer's yeast is dried in hot air at 50°C for 45 minutes, and then respectively pulverized through a 120-mesh sieve at low temperature to obtain fine powders and sieve them to ensure the high activity and nutritional value of the yeast components;

[0053] e) Preparation of aquatic product extract:

[0054] 12,500 grams of green mussels were subjected to ultrasonic-assisted extraction at a power of 80 W for 30 minutes;

[0055] 300 grams of fish oil were emulsified and then made into powder by spray drying at an inlet air temperature of 140 °C, an outlet air temperature of 60 °C, and a vacuum degree of -0.07 MPa to improve palatability and stability;

[0056] f) Preparation of marine plant complex:

[0057] 350 grams of dried seaweed and 1,500 grams of dried spirulina were respectively dried under low temperature and vacuum at 38 °C for 2 hours, and then finely ground through a 120-mesh sieve at low temperature to make fine powder and ensure nutrient components and biological activities;

[0058] g) Preparation of sodium chloride:

[0059] 150 grams of sodium chloride were sieved through a 120-mesh sieve to make the particle size uniform and improve the uniformity and stability of the finished product;

[0060] h) Homogenization and mixing:

[0061] The 3,200 grams of plant seeds, 1,400 grams of calcium powder, 1,800 grams of beef liver powder, 800 grams of yeast nutritional derivatives, 800 grams of aquatic product extract, 1,850 grams of marine plant complex, and 150 grams of sodium chloride prepared above were mixed evenly by low-speed stirring using a twin-shaft mixer at a rotation speed of 40 rpm for 30 minutes to obtain a homogeneous powdered natural nutritional supplement for dogs and cats.

[0062] Example 2

[0063] a) Preparation of plant seeds:

[0064] 1,000 grams of sunflower seed oil were emulsified at an emulsification temperature of 60 °C for 30 minutes, and then spray dried at an inlet air temperature of 180 °C, an outlet air temperature of 80 °C, and a vacuum degree of -0.09 MPa to be made into powder;

[0065] 1,600 grams of fennel seeds and 1,000 grams of pumpkin seeds were respectively finely ground through a 150-mesh sieve at low temperature and sieved to obtain fennel seed powder and pumpkin seed crude extract to make the components uniform and maintain the activity;

[0066] b) Preparation of calcium powder:

[0067] 900 grams of eggshells were cleaned and disinfected, dried and sterilized at 120 °C for 40 minutes, and then respectively ground through a 160-mesh sieve at low temperature and sieved together with 1,000 grams of calcium carbonate to make the powder fineness and ensure hygiene and safety;

[0068] c) Preparation of beef liver powder:

[0069] 5000 g of beef liver was steamed and cooked until cooked, then dried at 70 °C in hot air for 6 hours to reduce antinutritional factors and improve the taste. Subsequently, it was ground into powder through low-temperature grinding with a 150-mesh sieve and sieved;

[0070] d) Preparation of yeast nutritional derivatives:

[0071] 540 g of yeast was enzymolyzed at 42 °C for 2 hours. After 750 g of brewer's yeast was dried in hot air at 60 °C for 90 minutes, it was respectively ground into fine powder through low-temperature grinding with a 150-mesh sieve and sieved to ensure the high activity and nutritional value of the yeast components;

[0072] e) Preparation of aquatic product extracts:

[0073] 14000 g of green mussels were extracted by ultrasonic assistance, with a power of 120 W and a time of 40 minutes;

[0074] After emulsifying 300 g of fish oil, it was spray-dried at an inlet air temperature of 180 °C, an outlet air temperature of 80 °C, and a vacuum degree of -0.09 MPa to form a powder, improving palatability and stability;

[0075] f) Preparation of marine plant complex:

[0076] 400 g of dried seaweed and 800 g of dried spirulina were respectively dried at 45 °C under low-temperature vacuum for 3 hours, and then ground into fine powder through low-temperature grinding with a 150-mesh sieve and sieved to ensure nutritional components and biological activity;

[0077] g) Preparation of sodium chloride:

[0078] 300 g of sodium chloride was sieved with a 150-mesh sieve to make the particle size uniform and improve the uniformity and stability of the finished product;

[0079] h) Homogeneous mixing:

[0080] The 3600 g of plant seeds, 1900 g of calcium powder, 1400 g of beef liver powder, 600 g of yeast nutritional derivatives, 1000 g of aquatic product extracts, 1200 g of marine plant complex, and 300 g of sodium chloride prepared above were mixed evenly by low-speed stirring with a double-shaft mixer at a rotation speed of 60 rpm for 60 minutes to obtain a homogeneous powdered natural nutritional supplement for dogs and cats.

[0081] Example III

[0082] a) Preparation of plant seeds:

[0083] 800 g of sunflower seed oil was emulsified at an emulsification temperature of 55 °C for 25 minutes, and then spray-dried at an inlet air temperature of 160 °C, an outlet air temperature of 70 °C, and a vacuum degree of -0.08 MPa to form a powder;

[0084] 1300 grams of fennel seeds and 1100 grams of pumpkin seeds are respectively ground into fine powder through a 130-mesh sieve at low temperature and then sieved to obtain fennel seed powder and crude pumpkin seed extract, making the components uniform and maintaining the activity;

[0085] b) Preparation of calcium powder:

[0086] After 1000 grams of eggshells are cleaned and disinfected, they are dried and sterilized at 110 °C for 35 minutes, and then respectively ground through a 150-mesh sieve at low temperature with 700 grams of calcium carbonate and sieved to make the powder fineness and hygienic safety;

[0087] c) Preparation of beef liver powder:

[0088] 5800 grams of beef liver are steamed and cooked, dried in hot air at 65 °C for 8 hours to reduce anti-nutritional factors and improve the taste, and then ground into powder through a 130-mesh sieve at low temperature and sieved;

[0089] d) Preparation of yeast nutritional derivatives:

[0090] 800 grams of yeast are enzymatically hydrolyzed at 40 °C for 1.75 hours. After 1800 grams of brewer's yeast are dried in hot air at 55 °C for 65 minutes, they are respectively ground into fine powder through a 130-mesh sieve at low temperature and sieved to ensure the high activity and nutritional value of the yeast components;

[0091] e) Preparation of aquatic product extract:

[0092] 12500 grams of green mussels are extracted by ultrasonic assistance with a power of 100 W for 35 minutes;

[0093] After 500 grams of fish oil are emulsified, they are made into powder by spray drying with an inlet air temperature of 160 °C, an outlet air temperature of 70 °C, and a vacuum degree of -0.08 MPa to improve palatability and stability;

[0094] f) Preparation of marine plant complex:

[0095] 300 grams of dried seaweed and 1100 grams of dried spirulina are respectively dried in a low-temperature vacuum at 42 °C for 2.5 hours, and then ground into fine powder through a 130-mesh sieve at low temperature and sieved to ensure the nutritional components and biological activity;

[0096] g) Preparation of sodium chloride:

[0097] 200 grams of sodium chloride are sieved through a 130-mesh sieve to make the particle size uniform and improve the uniformity and stability of the finished product;

[0098] h) Homogeneous mixing:

[0099] Mix 3200 grams of the above-prepared plant seeds, 1700 grams of calcium powder, 1600 grams of beef liver powder, 900 grams of yeast nutritional derivatives, 1000 grams of aquatic product extract, 1400 grams of marine plant complex, and 200 grams of sodium chloride evenly by low-speed stirring with a double-shaft mixer at a rotation speed of 50 rpm for 45 minutes to obtain a homogeneous powdery natural nutritional supplement for dogs and cats.

[0100] Example 4

[0101] a) Preparation of plant seeds:

[0102] Emulsify 650 grams of sunflower seed oil at an emulsification temperature of 58°C for 25 minutes, and then perform spray drying at an inlet air temperature of 170°C, an outlet air temperature of 75°C, and a vacuum degree of -0.08 MPa to prepare it into a powder.

[0103] Crush 1200 grams of fennel seeds and 1100 grams of pumpkin seeds separately through a 140-mesh low-temperature grinder to make fine powders and sieve them to obtain fennel seed powder and pumpkin seed crude extract, making the components uniform and maintaining the activity.

[0104] b) Preparation of calcium powder:

[0105] After cleaning and disinfecting 1000 grams of eggshells, dry and sterilize them at 115°C for 35 minutes, and then crush them separately through a 150-mesh low-temperature grinder and sieve them together with 550 grams of calcium carbonate to make the powder fineness and hygiene safe.

[0106] c) Preparation of beef liver powder:

[0107] Cook 5600 grams of beef liver until cooked and then dry it with hot air at 70°C for 7 hours to reduce anti-nutritional factors and improve the taste, and then crush it through a 140-mesh low-temperature grinder to prepare a powder and sieve it.

[0108] d) Preparation of yeast nutritional derivatives:

[0109] Hydrolyze 900 grams of yeast at 40°C for 1.8 hours. After drying 2000 grams of brewer's yeast at 55°C with hot air for 70 minutes, crush them separately through a 140-mesh low-temperature grinder to make fine powders and sieve them to ensure the high activity and nutritional value of the yeast components.

[0110] e) Preparation of aquatic product extract:

[0111] Extract 13700 grams of green mussels by ultrasonic assistance with a power of 110W for 35 minutes.

[0112] After emulsifying 550 grams of fish oil, make it into a powder by spray drying at an inlet air temperature of 170°C, an outlet air temperature of 75°C, and a vacuum degree of -0.08 MPa to improve palatability and stability.

[0113] f) Preparation of marine plant complex:

[0114] 400 g of dried seaweed and 1200 g of dried spirulina were respectively dried at a low temperature of 45 °C under vacuum for 2 hours, and then pulverized at a low temperature through a 140-mesh sieve to make fine powder and screened to ensure nutritional components and biological activities;

[0115] g) Preparation of sodium chloride:

[0116] 250 g of sodium chloride was screened through a 140-mesh sieve to make the particle size uniform and improve the uniformity and stability of the finished product;

[0117] h) Homogenization and mixing:

[0118] The 2950 g of plant seeds, 1550 g of calcium powder, 1550 g of beef liver powder, 1000 g of yeast nutritional derivatives, 1100 g of aquatic product extracts, 1600 g of marine plant complex, and 250 g of sodium chloride prepared above were stirred and mixed evenly at a low speed by a twin-shaft mixer at a rotation speed of 55 rpm for 40 minutes to obtain a homogeneous powdery natural nutritional supplement for dogs and cats.

[0119] For the powdery natural nutritional supplement for dogs and cats obtained in the above Examples 1 to 4, the detection data of its nutritional values are as follows:

[0120] Nutritional value detection data (on dry basis)

[0121]

[0122] It can be seen from the comparative analysis that the protein in Example 1 and Example 4 is the highest; in Example 2, the low-high protein raw materials were reduced to highlight the calcium ratio. The oil powder ratio in Example 2 is the highest, and the energy density is also the highest. DHA increases with the increase in the dosage of fish oil powder and green mussels, and Example 4 is the best. The calcium content in Example 2 is the highest and can be used for high-calcium formulas for puppies / lactating dogs. Example 1 is closest to the calcium level required by dogs and cats, and at the same time contains appropriate amounts of chlorine and sodium, which helps to improve palatability. In Example 4, calcium, sodium, and chlorine are controlled in the medium-low range, which is easy to be superimposed with other foods without overdose. In Example 1, due to the high ratio of beef liver powder and spirulina, vitamin A and iron rank first; copper is slightly lower, which is suitable for low copper requirements. The overall content of vitamins and trace elements in Example 2 is the lowest, catering to special physiological needs (bones, postoperative rehabilitation).

[0123] The present invention adopts a scientific ratio of multiple natural ingredients and a multi-stage temperature control process combining "low-temperature crushing, hot air drying, enzymatic extraction, and spray drying" to adapt to the physical and thermal stability characteristics of various natural ingredients (such as animal protein, plant seed oil, and bioactive algae), effectively retain active nutrients, and improve nutrient absorption rate and bioavailability; beef liver is dried by hot air maturation at 60-70°C combined with 120-150 mesh crushing to destroy anti-nutritional factors while retaining liver-derived vitamins and heme iron; yeast hydrolyzate is enzymatically hydrolyzed at 38-42°C to promote protein pre-digestion and increase the amino acid release rate; green mussels use ultrasound-assisted extraction (80-120W, 30-40min) to improve the bioavailability of fat-soluble components such as EPA and DHA; this process strategy based on matching raw material characteristics has opened up the technical link of nutrition "source, stability, release, and absorption".

[0124] The present invention emulsifies liquid sunflower oil and fish oil at 50-60°C, and then utilizes spray drying at 140-180°C (air outlet 60-80°C, vacuum degree -0.07-0.09MPa) to embed the oil into powder particles, thereby substantially realizing microencapsulation. This process not only prevents oxidation rancidity and adsorption adhesion of the oil in the product, but also ensures uniform distribution and intake during feeding, thereby improving the absorption efficiency of essential fatty acids such as DHA and linoleic acid in dogs and cats. Compared with the traditional method of directly adding liquid oil, this process solves the problem of uneven oil addition in homemade pet meals, and significantly improves the palatability, safety and convenience of meal preparation.

[0125] The present invention innovatively combines various raw materials such as plant seeds, marine plants, animal offal, aquatic extracts, yeast derivatives and calcium source powder into a homogeneous powder product with uniform particle size (120-150 mesh) through a double-shaft mixer (40-60rpm); its ingredient design not only covers calcium, iron, zinc, vitamin A and other micronutrients commonly lacking in dogs and cats, but also uses natural antioxidant factors such as pumpkin seed extract and spirulina to provide basic immune support, while enhancing intestinal absorption and anti-inflammatory capabilities through yeast peptides and mussel extracts; the formula does not rely on synthetic chemical supplements, but achieves multi-system synergistic supplementation through food-based nutritional combinations, which is highly suitable for modern pet owners' feeding method based on raw / cooked food supplemented with supplements, and is especially suitable for the elderly, convalescents, and immunocompromised dogs and cats.

[0126] It is a uniform powdered premix that can be used with a variety of homemade pet foods.

[0127] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of rights of the present invention. At the same time, the above description should be understandable and implementable for professionals in the relevant technical field. Therefore, other equivalent changes or modifications that do not deviate from the spirit disclosed by the present invention should be included in the scope of the patent application.

Claims

1. A powdered natural nutritional supplement for dogs and cats, characterized in that The mass percentage content of its components is as follows: plant seeds 26 - 39%, calcium powder 14 - 22%, beef liver powder 14 - 20%, yeast nutritional derivatives 6 - 12%, aquatic product extract 6 - 15%, marine plant complex 10 - 19%, sodium chloride 1.5 - 3%.

2. The powdery natural nutritional supplement for dogs and cats according to claim 1, wherein: The mass percentage content of the components of plant seeds is as follows: powdered sunflower seed oil 20 - 30%, fennel seed powder 35 - 45%, crude pumpkin seed extract 35 - 40%.

3. The powdered natural nutritional supplement for dogs and cats according to claim 1, characterized in that: The mass percentage content of the components of calcium powder is as follows: eggshell powder 55 - 65%, calcium carbonate 40 - 45%.

4. The powdery natural nutritional supplement for dogs and cats according to claim 1, characterized in that: The mass percentage content of the components of yeast nutritional derivatives is as follows: yeast hydrolyzate 45 - 50%, brewer's yeast powder 45 - 50%.

5. The powdery natural nutritional supplement for dogs and cats according to claim 1, characterized in that: The mass percentage content of the components of aquatic product extract is as follows: green mussel extract 45 - 55%, fish oil powder 40 - 50%.

6. The powdered natural nutritional supplement for dogs and cats according to claim 1, characterized in that: The mass percentage content of the components of marine plant complex is as follows: seaweed powder 20 - 25%, spirulina powder 55 - 80%.

7. The preparation method of the powdery natural nutritional supplement for dogs and cats according to claim 1, characterized in that: It includes the following steps: a) Preparation of plant seeds: Emulsify sunflower seed oil at an emulsification temperature of 50 - 60°C for 20 - 30 minutes, then carry out spray drying with an inlet air temperature of 140 - 180°C, an outlet air temperature of 60 - 80°C, and a vacuum degree of -0.07 MPa to -0.09 MPa to prepare it into a powder form; Crush fennel seeds and pumpkin seeds separately through a 120 - 150 - mesh low - temperature pulverization to make fine powders and sieve them to obtain fennel seed powder and crude pumpkin seed extract; b) Preparation of calcium powder: After cleaning and disinfecting the eggshells, dry and sterilize them at 100 - 120°C for 30 - 40 minutes, and then pulverize and sieve them separately through a 140 - 160 - mesh low - temperature pulverization together with calcium carbonate; c) Preparation of beef liver powder: Cook and ripen the beef liver, dry it with hot air at 60 - 70°C for 6 - 10 hours, and then pulverize it through a 120 - 150 - mesh low - temperature pulverization to prepare a powder and sieve it; d) Preparation of yeast nutritional derivatives: Enzymatically hydrolyze yeast at 38°C - 42°C for 1.5 - 2 hours. After drying brewer's yeast with hot air at 50°C - 60°C for 45 - 90 minutes, then pulverize them separately through a 120 - 150 - mesh low - temperature pulverization to make fine powders and sieve them; e) Preparation of aquatic product extract: Extract green mussels by ultrasonic - assisted extraction with a power of 80 W - 120 W for 30 - 40 minutes; Emulsify fish oil and then carry out spray drying with an inlet air temperature of 140 - 180°C, an outlet air temperature of 60 - 80°C, and a vacuum degree of -0.07 MPa to -0.09 MPa to make it into a powder form; f) Preparation of marine plant complex: Vacuum - dry dry seaweed and dry spirulina separately at 38°C - 45°C for 2 - 3 hours, and then pulverize them through a 120 - 150 - mesh low - temperature pulverization to make fine powders and sieve them; g) Preparation of sodium chloride: Sieve sodium chloride through a 120 - 150 - mesh to make the particle size uniform; h) Homogeneous mixing: Mix the above - prepared plant seeds, calcium powder, beef liver powder, yeast nutritional derivatives, aquatic product extract, marine plant complex, and sodium chloride evenly by low - speed stirring with a double - shaft mixer at a rotation speed of 40 - 60 rpm for 30 - 60 minutes to obtain a homogeneous powdered natural nutritional supplement for dogs and cats.

8. The preparation method of the powdery natural nutritional supplement for dogs and cats according to claim 7, characterized in that: The mixed finished powder is dried at a low temperature of 45°C to 65°C for 30 to 40 minutes to remove residual moisture, and is sieved through a sieve with 120 to 150 meshes before packaging.

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