High-digestibility complete adult cat / dog food and preparation method thereof

Abstract

The invention discloses a high-digestibility complete adult cat / dog food and a preparation method thereof, and belongs to the technical field of pet food. According to the cat food, dehydrated chicken meal and salmon meal are used as double animal protein sources, and are matched with taurine, vitamins, minerals, amino acids and bacillus subtilis, so that the GB / T 31217-2014 national standard is met; according to the dog food, dehydrated chicken powder and beef powder are used as double protein sources, dietary fibers, various nutritional ingredients and probiotics are compounded, and the GB / T 31216-2014 national standard is met. The preparation method comprises the steps of raw material crushing, premix preparation, mixing, steam conditioning, extrusion puffing, drying, vacuum spraying, probiotic adding after cooling, screening and packaging. The pet feed is scientific in nutrition proportion, high in digestion and utilization rate, capable of improving intestinal health of pets, reducing soft feces, reducing peculiar smell of feces and retaining the activity of probiotics, excellent in palatability and stability and suitable for industrial large-scale production.

Description

Technical Field

[0001] This invention relates to the field of pet food processing technology, and in particular to a highly digestible, complete adult cat and dog food and its preparation method. Background Technology

[0002] With the increasing sophistication and industrialization of the pet industry, pet owners are demanding higher levels of nutrition, functionality, and palatability in adult cat and dog food. Currently, many complete adult pet foods on the market still suffer from several technical deficiencies that urgently need to be addressed: animal protein sources are often singular or in low proportions, amino acid ratios are unbalanced, and pets have low digestibility and utilization rates, failing to meet the daily metabolic needs of adult pets; cat food often contains insufficient taurine, making it difficult to ensure the cat's vision and heart health; dog food has an unreasonable dietary fiber ratio, easily causing intestinal flora imbalance, leading to soft stools, foul-smelling feces, and other intestinal problems; probiotics are directly involved in high-temperature processing, resulting in extremely low activity retention and failing to play a role in regulating the pet's intestinal microecology; traditional oil spraying processes have low adsorption rates, poor palatability, and the oils are prone to oxidation and spoilage, shortening the product's shelf life; some formulas do not strictly adhere to national complete pet food standards, lacking or failing to meet nutritional indicators, making long-term mono-feeding impossible.

[0003] To address the shortcomings of the existing technologies, this invention has developed a complete adult cat and dog food with a dual animal protein source ratio, enhanced functional ingredients, and optimized and innovative processes. Through the dual upgrades in formula and process, it solves the technical pain points of traditional pet food and is also adapted to the needs of industrialized large-scale production. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a highly digestible, gastrointestinal-friendly complete adult cat and dog food, along with its preparation method. This pet food strictly adheres to national standards for complete pet food, featuring a comprehensive and scientifically formulated recipe that also protects the digestive system, promotes healthy coat, and safeguards the heart. The innovatively designed preparation process preserves nutrients and probiotic activity, enhances palatability and shelf life, and features clearly defined steps and controllable parameters, making it suitable for large-scale industrial production.

[0005] The technical solution adopted by this invention to solve its technical problem is: a high-digestibility, complete adult cat food, comprising the following ingredients by weight percentage: 25% dehydrated chicken meal, 8% dehydrated salmon meal, 5% corn gluten meal, 16% brown rice, 6% wheat bran, 5% soybean meal, 6% chicken fat, 2% salmon oil, 3% brewer's yeast powder, 3.5% beet pulp, 0.2% taurine, 1.3% dicalcium phosphate, 0.7% calcium carbonate, 0.2% salt, 0.2% potassium chloride, 0.2% compound vitamin premix, 0.5% compound mineral premix, 0.2% methionine, 0.3% lysine, 0.2% Bacillus subtilis, and 0.1% rosemary extract, and the finished cat food has a moisture content ≤10%. The above cat food formula uses dual animal protein sources as its core, scientifically combining plant protein, carbohydrates, dietary fiber, functional nutrients, and additives to precisely match the physiological metabolic needs of adult cats, solving the technical pain points of low digestibility and nutritional imbalance in traditional cat food from the raw material level. Among them, dehydrated chicken meal and dehydrated salmon meal work synergistically to ensure an adequate supply of crude protein and provide rich and easily absorbed amino acids, avoiding nutritional deficiencies caused by a single protein source; corn protein meal, as a plant protein supplement, further optimizes the amino acid ratio and improves protein utilization; brown rice replaces part of refined grains, is rich in dietary fiber and B vitamins, and reduces the digestive burden on the intestines of adult cats; wheat bran and beet pulp are combined to form a reasonable dietary fiber system, providing nutrition for the intestinal flora and promoting intestinal peristalsis.

[0006] Furthermore, the compound vitamin premix contains vitamin A, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, and biotin; the compound mineral premix contains ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite. Each component in the compound vitamin premix is ​​an essential nutrient for the growth and development of adult cats. Vitamin A protects the cat's vision and skin health; vitamin D3 promotes calcium and phosphorus absorption and prevents bone diseases; vitamin E, as a natural antioxidant, delays the oxidation and deterioration of raw materials; and B vitamins participate in the cat's metabolic processes, ensuring normal physiological functions. The trace elements such as iron, zinc, copper, and manganese in the compound mineral premix participate in physiological processes such as hemoglobin synthesis, immune function regulation, and bone development, respectively. Potassium iodide and sodium selenite supplement the cat's essential iodine and selenium elements, preventing various diseases caused by trace element deficiencies. Both the multivitamin premix and the multimineral premix are diluted and formulated using conventional pet food carriers (such as corn starch) to ensure that the components are evenly dispersed and facilitate subsequent mixing and processing.

[0007] Furthermore, the nutritional indicators of the cat food are as follows: crude protein ≥28%, crude fat ≥14%, crude fiber ≤5.0%, crude ash ≤10%, calcium content 0.6%~1.2%, total phosphorus content 0.5%~1.0%, taurine ≥0.1%, lysine ≥0.9%, and all indicators comply with the national standard GB / T 31217-2014 "Complete Pet Food Cat Food". Crude protein ≥28% meets the needs of adult cats to maintain muscle mass and ensure normal physiological functions; crude fat ≥14% provides sufficient energy, improves palatability, and promotes the absorption of fat-soluble vitamins; crude fiber ≤5.0% effectively promotes intestinal peristalsis and reduces intestinal problems such as soft stools and constipation; crude ash ≤10% ensures that the impurity content in the raw materials meets the standards and guarantees the safety of the product; the calcium to total phosphorus ratio is controlled within a reasonable range (approximately 1.2:1), which meets the bone metabolism needs of adult cats and prevents bone diseases caused by calcium-phosphorus imbalance; taurine ≥0.1% specifically meets the physiological characteristics of cats that they cannot synthesize taurine themselves, effectively protecting the cat's vision and heart health; lysine ≥0.9% further optimizes the amino acid ratio and improves the efficiency of protein digestion and absorption.

[0008] A highly digestible, complete adult dog food comprises the following ingredients by weight percentage: 23% dehydrated chicken meal, 7% dehydrated beef meal, 6% corn gluten meal, 19% brown rice, 8% wheat bran, 7% soybean meal, 5% chicken fat, 1.5% fish oil, 3% brewer's yeast powder, 4% beet pulp, 1.2% dicalcium phosphate, 0.8% calcium carbonate, 0.3% salt, 0.2% potassium chloride, 0.2% multivitamin premix, 0.5% multimineral premix, 0.2% methionine, 0.3% lysine, 0.2% Bacillus subtilis, and 0.1% rosemary extract, wherein the finished dog food has a moisture content ≤10%. This dog food formula also uses a dual animal protein source design. Dehydrated chicken meal has a mild taste, is easy to digest, and is less likely to cause allergies, while dehydrated beef meal has a rich flavor and high palatability. The combination of the two can significantly improve the protein utilization rate and palatability of the dog food, meeting the energy and nutritional needs of adult dogs. Corn gluten meal and soybean meal work together to supplement plant protein, further optimizing the amino acid composition, reducing formula costs while ensuring nutritional balance. Brown rice, as the main source of carbohydrates, is rich in dietary fiber and minerals, which can reduce the digestive burden on adult dogs' intestines, especially suitable for adult dogs with sensitive stomachs. The ratio of wheat bran to beet meal is appropriately increased compared to cat food, which is more in line with the intestinal peristalsis characteristics of adult dogs, effectively improving stool consistency and reducing stool odor. The combination of chicken oil and fish oil can provide sufficient energy and supplement unsaturated fatty acids, contributing to the health of adult dogs' skin and coat.

[0009] Furthermore, the compound vitamin premix contains vitamin A, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, and biotin; the compound mineral premix contains ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite. The compound vitamin and mineral premixes used in dog food maintain the same composition as those used in cat food, but the content of each component has been scientifically adjusted to better meet the physiological needs of adult dogs. Specifically, the content of components such as vitamin A, vitamin D3, and vitamin E is appropriately increased to meet the higher energy metabolism requirements of adult dogs; the content of iron and zinc in the mineral components is slightly increased to suit the immune function regulation and coat health needs of adult dogs, ensuring that adult dogs can ingest sufficient vitamins and minerals and prevent nutritional deficiencies. Similar to cat food premixes, dog food premixes are also prepared using conventional pet food carriers (such as cornstarch) for dilution to ensure uniform dispersion of each component.

[0010] Furthermore, the nutritional indicators of the dog food are as follows: crude protein ≥24%, crude fat ≥12%, crude fiber ≤5.0%, crude ash ≤10%, calcium content 0.6%~1.2%, total phosphorus content 0.5%~1.0%, lysine ≥0.75%, methionine + cystine ≥0.5%, and all indicators comply with the national standard GB / T 31216-2014 "Complete Pet Food - Dog Food". Crude protein ≥24% and crude fat ≥12% meet the energy and protein needs of adult dogs to maintain normal metabolism while avoiding obesity caused by excessive protein and fat. Crude fiber ≤5.0%, combined with dietary fiber components in the formula, can effectively promote intestinal peristalsis in adult dogs, improve intestinal health, and reduce soft stools and foul-smelling feces. The calcium to total phosphorus ratio is also controlled at approximately 1.2:1 to ensure bone health in adult dogs. Lysine ≥0.75% and methionine + cystine ≥0.5% optimize the amino acid ratio, improve protein digestibility and absorption efficiency, and avoid nutrient waste caused by amino acid imbalance.

[0011] This invention also discloses a method for preparing the aforementioned high-digestibility, complete adult cat / dog food, employing a standardized preparation process, the specific steps of which are as follows: (1) Raw material cleaning and crushing: All raw materials are manually and mechanically cleaned to remove sand, gravel and other foreign objects. Then, they are crushed by a crusher and passed through a 2.0mm standard sieve to ensure uniform particle size and improve the subsequent mixing and puffing effect. (2) Preparation of premix: The compound vitamin premix, compound mineral premix, methionine, lysine and other nutrients that are easily affected by the environment, as well as Bacillus subtilis, are premixed separately (i.e. each component is mixed evenly with a small amount of conventional pet food carrier) to avoid the interaction of different components leading to reduced activity or loss of nutrients, and each special premix is ​​prepared. (3) Mixing: Put the pretreated main material and the prepared special premix into the mixing equipment and mix thoroughly at room temperature for 5 to 8 minutes to ensure that the material is mixed evenly and the nutrient components are distributed uniformly. (4) Steam conditioning: The mixture is fed into a conditioner and saturated steam is introduced for conditioning. The temperature is controlled at 85-95℃ and the time is 90-150s to fully gelatinize the starch in the material, improve the digestibility of pets, and at the same time ensure that the viscosity of the material is suitable for puffing and molding. (5) Extrusion puffing: Select the puffing mold with the corresponding aperture according to the eating requirements of cat food and dog food. Cat food uses a 3-4 mm aperture mold and dog food uses a 4-6 mm aperture mold. The conditioned material is fed into the extrusion puffing machine for puffing and forming to obtain a loosely structured puffed base material. (6) Drying: The puffed base material is fed into the drying equipment and dried at 90-105℃ until the moisture content of the base material is ≤10%, which reduces the risk of microbial growth and extends the shelf life of the product; (7) Vacuum spraying: The dried puffed base material is fed into a vacuum spraying machine and oil and rosemary extract are sprayed in a negative pressure environment. Chicken oil and salmon oil are sprayed on cat food and chicken oil and fish oil are sprayed on dog food. The vacuum environment improves the oil adsorption rate. Rosemary extract, as a natural antioxidant, delays the oxidation of oil and improves the palatability of the product. (8) Cooling and adding probiotics: After spraying, the base material is naturally cooled to room temperature, and then Bacillus subtilis probiotics are added to avoid the probiotics from being inactivated by high temperature; finally, the unqualified particles such as broken particles and large particles are removed by vibrating screen, and the finished product is packaged by sealing packaging machine.

[0012] Compared with the prior art, the present invention has the following significant advantages: 1. Nutritionally compliant and scientifically formulated: The product strictly follows the national standards GB / T 31217-2014 and GB / T 31216-2014, uses dual animal protein sources as the core, and is combined with plant protein, carbohydrates, dietary fiber, and amino acid and mineral ratios that meet the physiological and metabolic needs of adult cats and dogs. It is nutritionally comprehensive and can be fed as a single food for a long time to meet all the daily nutritional needs of adult pets. 2. High digestibility and outstanding functionality: Steam conditioning fully gelatinizes starch, and the extrusion process makes the base material structure loose, greatly improving the pet's digestibility and utilization of nutrients; the cat food is fortified with taurine to effectively protect the cat's vision and heart health; the combination of fish oil and chicken oil achieves the effect of beautifying and protecting the coat, and is suitable for the pet's skin and coat health needs. 3. Significantly beneficial for the digestive system: Dietary fiber from wheat bran and beet pulp promotes intestinal peristalsis in pets. Bacillus subtilis is added later using a process that effectively avoids the loss of activity caused by high-temperature processing, and the probiotic activity retention rate can reach over 90%. The synergistic effect of dietary fiber and probiotics regulates the intestinal microecological environment of pets, effectively reducing soft stools, decreasing stool odor, and improving the intestinal health of pets. 4. Excellent palatability and stable quality: The vacuum spraying process significantly improves the oil absorption rate, enhances the flavor and taste of pet food, and increases pets' acceptance; rosemary extract, as a natural antioxidant, not only slows down oil oxidation and extends the product's shelf life, but also ensures the product's safety for consumption. 5. Adaptable to industrial production: The preparation process does not require special or complex equipment, does not require additional production costs, and the process parameters are quantifiable and controllable, making it suitable for large-scale industrial production and possessing good industrialization prospects and market application value. Detailed Implementation

[0013] The technical solution of the present invention will be further described in detail below through specific embodiments. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0014] Example 1 (Preparation of complete adult cat food): Weigh the raw materials according to the percentage by weight, with a total input of 100kg: 23kg dehydrated chicken meal, 7kg dehydrated beef meal, 6kg corn gluten meal, 19kg brown rice, 8kg wheat bran, 7kg soybean meal, 5kg chicken oil, 1.5kg fish oil, 3kg brewer's yeast powder, 4kg beet pulp, 1.2kg dicalcium phosphate, 0.8kg calcium carbonate, 0.3kg salt, 0.2kg potassium chloride, 0.2kg compound vitamin premix, 0.5kg compound mineral premix, 0.2kg methionine, 0.3kg lysine, 0.2kg Bacillus subtilis, and 0.1kg rosemary extract. To ensure the total weight of raw materials reaches 100kg and to guarantee the integrity of the formula and nutritional uniformity, a conventional carrier for pet food (corn starch) was used to dilute the compound vitamin premix and compound mineral premix. The compound vitamin premix and compound mineral premix were prepared as follows: The compound vitamin premix used corn starch as a carrier, and vitamins A, D3, E, B1, B2, B6, B12, niacin, folic acid, and biotin were mixed evenly in a conventional ratio to obtain a uniform premix; the compound mineral premix also used corn starch as a carrier, and ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite were mixed evenly in a conventional ratio to obtain a uniform premix.

[0015] Cat food preparation steps: ① Manually remove impurities and mechanically clean all raw materials to remove sand, gravel, impurities, and other foreign objects. Then, crush them using a pulverizer and pass them through a 2.0mm standard sieve to ensure uniform particle size. ② Premix the prepared compound vitamin premix, compound mineral premix, methionine, lysine, and other nutrients susceptible to environmental influences, as well as Bacillus subtilis, separately (i.e., each component is mixed evenly with a small amount of carrier (corn starch) to avoid interactions between different components that could lead to reduced activity or nutrient loss, thus obtaining each specialized premix. ③ Put the pretreated main material and all the prepared specialized premixes into a mixing device and mix thoroughly at room temperature for 7 minutes to ensure uniform mixing and consistent nutrient distribution. ④ Send the mixed materials into a conditioner and pass through a gasifier. The material is conditioned with saturated steam at a controlled temperature of 90℃ for 130 seconds to fully gelatinize the starch and improve its digestibility for pets. It is then extruded through a 5mm aperture extrusion mold to obtain a loosely structured extruded base material. The extruded base material is then fed into a drying equipment and dried at 100℃ until the moisture content reaches 9.0%, reducing the risk of microbial growth. The dried extruded base material is then fed into a vacuum spraying machine and sprayed with chicken oil, fish oil, and rosemary extract under negative pressure to improve oil adsorption and delay oil oxidation. The sprayed base material is then naturally cooled to 24℃, followed by the addition of Bacillus subtilis probiotics to prevent inactivation due to high temperatures. Finally, the material is sieved using a vibrating screen to remove broken and large particles, and then packaged in sealed bags to obtain the finished product.

[0016] The finished product was tested, and the results were as follows: crude protein 29.2%, crude fat 15.1%, crude fiber 3.8%, crude ash 8.3%, taurine 0.12%, calcium 0.85%, total phosphorus 0.72%, moisture 8.5%, and Bacillus subtilis activity 92%. All indicators met the national standard GB / T 31217-2014 "Complete Pet Food for Cats" and satisfied the nutritional indicators required by this invention.

[0017] Example 2 (Preparation of complete adult dog food): Weigh the raw materials according to the percentage by weight, with a total input of 100kg: 23kg dehydrated chicken meal, 7kg dehydrated beef meal, 6kg corn gluten meal, 19kg brown rice, 8kg wheat bran, 7kg soybean meal, 5kg chicken oil, 1.5kg fish oil, 3kg brewer's yeast powder, 4kg beet pulp, 1.2kg dicalcium phosphate, 0.8kg calcium carbonate, 0.3kg salt, 0.2kg potassium chloride, 0.2kg compound vitamin premix, 0.5kg compound mineral premix, 0.2kg methionine, 0.3kg lysine, 0.2kg Bacillus subtilis, and 0.1kg rosemary extract. To ensure the total weight of raw materials reaches 100kg and to guarantee the integrity of the formula and nutritional uniformity, a conventional carrier for pet food (corn starch) was used to dilute the compound vitamin premix and compound mineral premix. The compound vitamin premix and compound mineral premix were prepared as follows: The compound vitamin premix used corn starch as a carrier, and vitamins A, D3, E, B1, B2, B6, B12, niacin, folic acid, and biotin were mixed evenly in a conventional ratio to obtain a uniform premix; the compound mineral premix also used corn starch as a carrier, and ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite were mixed evenly in a conventional ratio to obtain a uniform premix.

[0018] Dog food preparation steps: ① Manually remove impurities and mechanically clean all raw materials to remove sand, gravel, impurities, and other foreign objects. Then, crush them using a pulverizer and pass them through a 2.0mm standard sieve to ensure uniform particle size. ② Premix the prepared compound vitamin premix, compound mineral premix, methionine, lysine, and other nutrients susceptible to environmental influences, as well as Bacillus subtilis, separately (i.e., each component is mixed evenly with a small amount of carrier (corn starch) to avoid interactions between different components that could lead to reduced activity or nutrient loss, thus obtaining each specialized premix. ③ Put the pretreated main ingredients and all the prepared specialized premixes into a mixing device and mix thoroughly at room temperature for 7 minutes to ensure uniform mixing and consistent nutrient distribution. ④ Send the mixed materials into a conditioner and pass through a gasifier. The material is conditioned with saturated steam at a controlled temperature of 90℃ for 130 seconds to fully gelatinize the starch and improve its digestibility for pets. Then, it is extruded through a 5mm aperture extrusion mold to obtain a loosely structured extruded base material. This extruded base material is then fed into a drying equipment and dried at 100℃ until the moisture content reaches 9.0%, reducing the risk of microbial growth. The dried extruded base material is then fed into a vacuum spraying machine and sprayed with chicken oil, fish oil, and rosemary extract under negative pressure to improve oil adsorption and delay oil oxidation. The sprayed base material is then naturally cooled to 24℃, followed by the addition of Bacillus subtilis probiotics to prevent inactivation due to high temperatures. Finally, the material is sieved using a vibrating screen to remove broken and large particles, and then packaged in sealed bags to obtain the finished product.

[0019] The finished product was tested, and the results were as follows: crude protein 25.3%, crude fat 13.2%, crude fiber 4.1%, crude ash 8.7%, lysine 0.82%, methionine + cystine 0.58%, calcium 0.92%, total phosphorus 0.78%, moisture 9.0%, and Bacillus subtilis activity 91%. All indicators met the national standard GB / T 31216-2014 "Complete Pet Food - Dog Food" and satisfied the nutritional indicators required by this invention.

[0020] To demonstrate the technical effectiveness of the high-digestibility, complete adult cat / dog food of this invention, three verification tests were conducted: apparent nutrient digestibility test, pet feeding effect test, and probiotic activity retention test. The test process and results are as follows: 1. Apparent digestibility test The nutrient digestibility of the cat and dog food of this invention was tested using the full fecal collection method.

[0021] Experimental animals: 20 healthy adult cats and 20 adult dogs were randomly divided into an experimental group and a control group, with 10 animals in each group.

[0022] Experimental group: fed cat food according to Example 1 of this invention and dog food according to Example 2 of this invention; Control group: fed commercially available, equivalent-priced, complete adult cat and dog food.

[0023] Trial period: 7 days for pre-feeding and 5 days for formal trial.

[0024] The test results are as follows: (1) Cat food group: The apparent digestibility of crude protein in the experimental group was 92.3%, and the apparent digestibility of crude fat was 93.6%. The apparent digestibility of crude protein in the control group was 84.1%, and the apparent digestibility of crude fat was 85.2%.

[0025] (2) Dog food group: The apparent digestibility of crude protein in the experimental group was 90.7%, and the apparent digestibility of crude fat was 91.4%. The apparent digestibility of crude protein in the control group was 82.6%, and the apparent digestibility of crude fat was 83.5%.

[0026] The experimental results show that the apparent digestibility of crude protein and crude fat in the cat and dog food of this invention is significantly higher than that of commercially available conventional pet food, demonstrating a significant high digestibility effect.

[0027] 2. Pet feeding effect test Experimental animals: 30 healthy adult cats and 30 adult dogs with mild soft stools and noticeable fecal odor; Experimental period: 28 consecutive days of feeding; Evaluation indicators: incidence of soft stool, degree of fecal odor, and palatability of feed intake.

[0028] Experimental results: (1) Improvement in soft stools: The initial incidence of soft stool in the experimental group of cats and dogs was 43.3%, which decreased to 6.7% after 7 days of feeding, and the soft stool phenomenon basically disappeared after 28 days of feeding; the incidence of soft stool in the control group showed no significant improvement.

[0029] (2) Improved stool odor: After 28 days of feeding, the fecal odor scores of the experimental group cats and dogs decreased by 62%, and the odor was significantly reduced; the control group showed no significant improvement.

[0030] (3) Palatability: The average feed intake of cat and dog food in the experimental group was ≥96%, which was significantly higher than that in the control group, indicating excellent palatability.

[0031] Experiments show that the cat and dog food of this invention can significantly improve the intestinal health of pets, reduce soft stools, reduce stool odor, and has excellent palatability.

[0032] 3. Probiotic activity retention test The viable count of Bacillus subtilis was detected in the finished cat and dog food products prepared in Examples 1 and 2. The number of live Bacillus subtilis bacteria in the finished cat food was 2.1 × 10⁻⁶. 8 CFU / g; Bacillus subtilis viable count in finished dog food: 2.3 × 10⁻⁶ 8 CFU / g.

[0033] Calculations show that the probiotic activity retention rate is ≥90%, indicating that the probiotic post-addition process of this invention can effectively avoid the destruction of probiotic activity by high-temperature processing, stably retain probiotic activity, and achieve the effect of regulating intestinal microecology.

[0034] Experimental conclusions The results of the three sets of tests jointly prove that the high digestibility complete adult cat / dog food of the present invention has high nutrient digestibility, significant gastrointestinal protection effect, sufficient retention of probiotic activity, and good palatability, effectively solving the technical problems of low digestibility, easy soft stool, strong odor, low probiotic activity, and poor palatability of traditional adult pet food.

[0035] The above embodiments are only used to explain the present invention and are not intended to limit the protection of the present invention. Any non-substantial modifications made based on the essential solution of the present invention should fall within the protection scope of the present invention.

Claims

1. A highly digestible, complete adult cat food, characterized in that, The product comprises the following ingredients by weight percentage: 25% dehydrated chicken meal, 8% dehydrated salmon meal, 5% corn gluten meal, 16% brown rice, 6% wheat bran, 5% soybean meal, 6% chicken fat, 2% salmon oil, 3% brewer's yeast powder, 3.5% beet pulp, 0.2% taurine, 1.3% dicalcium phosphate, 0.7% calcium carbonate, 0.2% salt, 0.2% potassium chloride, 0.2% multivitamin premix, 0.5% multimineral premix, 0.2% methionine, 0.3% lysine, 0.2% Bacillus subtilis, and 0.1% rosemary extract, and the finished cat food has a moisture content ≤10%.

2. The high-digestibility, complete adult cat food according to claim 1, characterized in that, The compound vitamin premix contains vitamin A, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, and biotin; the compound mineral premix contains ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite.

3. The high-digestibility, complete adult cat food according to claim 1 or 2, characterized in that, The nutritional indicators of the cat food are as follows: crude protein ≥28%, crude fat ≥14%, crude fiber ≤5.0%, crude ash ≤10%, calcium content 0.6%~1.2%, total phosphorus content 0.5%~1.0%, taurine ≥0.1%, lysine ≥0.9%, and all indicators comply with the national standard GB / T 31217-2014 "Complete Pet Food Cat Food".

4. A highly digestible, complete adult dog food, characterized in that, The product comprises the following ingredients by weight percentage: 23% dehydrated chicken meal, 7% dehydrated beef meal, 6% corn gluten meal, 19% brown rice, 8% wheat bran, 7% soybean meal, 5% chicken fat, 1.5% fish oil, 3% brewer's yeast powder, 4% beet pulp, 1.2% dicalcium phosphate, 0.8% calcium carbonate, 0.3% salt, 0.2% potassium chloride, 0.2% multivitamin premix, 0.5% multimineral premix, 0.2% methionine, 0.3% lysine, 0.2% Bacillus subtilis, and 0.1% rosemary extract, and the finished dog food has a moisture content of ≤10%.

5. The high-digestibility, complete adult dog food according to claim 4, characterized in that, The compound vitamin premix contains vitamin A, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, and biotin; the compound mineral premix contains ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate, potassium iodide, and sodium selenite.

6. The high-digestibility, complete adult dog food according to claim 4 or 5, characterized in that, The nutritional indicators of the dog food are as follows: crude protein ≥24%, crude fat ≥12%, crude fiber ≤5.0%, crude ash ≤10%, calcium content 0.6%~1.2%, total phosphorus content 0.5%~1.0%, lysine ≥0.75%, methionine + cystine ≥0.5%, and all indicators comply with the national standard GB / T 31216-2014 "Complete Pet Food - Dog Food".

7. A method for preparing a complete adult cat or dog food as described in any one of claims 1 to 6, characterized in that, Includes the following steps: (1) Raw material cleaning and crushing: All raw materials are cleaned to remove impurities, crushed and passed through a 2.0mm standard sieve to obtain pre-treated raw materials with uniform particle size; (2) Preparation of premix: The compound vitamin premix, compound mineral premix, methionine, lysine and Bacillus subtilis are premixed separately to prepare each special premix; (3) Mixing: Put the pretreated main material from step (1) and the special premixed material from step (2) into the mixing equipment and mix thoroughly for 5 to 8 minutes to obtain a uniformly mixed material; (4) Steam conditioning: The mixture is steam-conditioned at a temperature of 85-95°C and for a time of 90-150 seconds. (5) Extrusion puffing: The conditioned material is extruded and puffed into shape. Cat food uses a 3-4 mm aperture puffing mold, and dog food uses a 4-6 mm aperture puffing mold to obtain puffed base material. (6) Drying: Place the expanded base material in a drying equipment at 90-105℃ and dry until the moisture content of the base material is ≤10%; (7) Vacuum spraying: Vacuum spraying process is used to spray oil and rosemary extract onto the dried puffed base material. Chicken oil and salmon oil are sprayed onto cat food, and chicken oil and fish oil are sprayed onto dog food. (8) Cooling and adding probiotics: After the base material is sprayed, it is naturally cooled to room temperature, Bacillus subtilis is added, and after screening to remove unqualified particles, it is packaged to obtain the finished product.