Pet wet food using dairy products and meat products as raw materials and preparation method thereof

Abstract

The invention provides a pet wet food using dairy products and meat products as raw materials and a preparation method of the pet wet food. The preparation method specifically comprises the steps of meat cutting, pulping, emulsifying, enzyme adding, mixing and canning. The lactase is added into the pet wet food formula, so that lactose decomposition is facilitated, and pet absorption is promoted; a mixture of dextran sulfate and mannitol is used as a composite protective agent and interacts with protein, so that denaturation of the protein is effectively inhibited, the system stability is improved, meanwhile, the texture of wet food for pets can be improved, and the palatability and the feed intake rate are enhanced; in addition, the zinc sulfate is added, so that the oral problems of dental plaque and dental calculus can be obviously improved after the pet chews and eats the chewing tablet.

Description

Technical Field

[0001] The invention belongs to the field of pet food, and in particular relates to a pet wet food using dairy products and meat products as raw materials and a preparation method thereof. Background Art

[0002] Pet dogs and cats are good companions of humans, and adequate food nutrition is the premise for their liveliness and cuteness. In order to facilitate pet dogs and cats to get more comprehensive nutrition, many consumers start to feed their pets dog food or cat food. At present, pet food manufacturers use meat products in their formulas, and some also use dairy products, because meat and dairy products are rich in high-quality animal protein and other essential nutrients, which are more suitable for pet dogs and cats to digest and absorb. Among the raw materials of pet food, nutritionally complete dairy products naturally become an indispensable part of daily diet. However, some dogs and cats lack lactase, which breaks down lactose, which can cause diarrhea, vomiting, bad breath and other problems in dogs and cats, which are symptoms of lactose intolerance. At present, the relevant pet foods include wet food products processed by high-temperature sterilization technology with meat and water as the main raw materials, and pet liquid drinks made by pasteurization with cow's milk and goat's milk as the main raw materials. Pasteurization has no significant effect on the secondary structure of whey protein, but when the sterilization temperature exceeds 100°C, the protein structure is destroyed, the protein denatures, resulting in a decline in product quality, loss of protein biological activity, changes in physical and chemical properties, and the phenomenon of reduced solubility, flocculation or precipitation is prone to occur. The current process technology is unable to achieve an effective combination of wet food products and liquid dairy products. This is reflected in the fact that wet food products can only use meat as the main raw material. The soup may be clear or turbid but is mainly dark in color. After adding liquid milk, due to the poor thermal stability of liquid milk, flocculent precipitation and lumps will appear in the processing process, and a homogenous soup cannot be formed. This results in a poor product appearance and is difficult to be accepted by consumers. Pet wet food products contain more water. After eating, food residues easily stick to the tooth surface and cause dental plaque and tartar deposition and other oral problems. Once dental plaque and tartar are formed, they can only be treated by teeth cleaning. However, if the pet cannot actively cooperate with the teeth cleaning operation, anesthesia must be performed, which brings certain anesthesia risks to the pet. Therefore, actively preventing and treating oral problems during daily feeding is very critical to the health of pets. Summary of the invention

[0003] Technical problems to be solved: In view of the above technical problems, the purpose of the present invention is to provide a pet wet food using dairy products and meat products as raw materials and a production method thereof, which specifically includes: cutting meat, beating, emulsifying, adding enzymes, mixing and canning. The present invention adds lactase to the pet wet food formula, which is beneficial to decomposing lactose and promoting pet absorption; the mixture of dextran sulfate and mannitol acts as a composite protective agent, interacts with protein, effectively inhibits protein denaturation, improves system stability, and also improves the texture of pet wet food, enhances palatability and feeding rate; in addition, the addition of zinc sulfate can significantly improve the oral condition of dental plaque and tartar after the pet chews and eats.

[0004] Technical solution: A pet wet food using dairy products and meat products as raw materials, comprising the following components: by weight, 10-50 parts of block meat, 10-50 parts of whole milk, 5-500 IU of vitamin E, 0.5-3 parts of composite protective agent, 0.07-0.09 parts of lactase, 0.01-3 parts of taurine, 30-50 parts of water, 0.1-3 parts of cellulose, 0.1-2 parts of trehalose and 0.03-0.15 parts of zinc sulfate. Further, the block meat is one or more of chicken breast, duck, goose, cattle, sheep, fish, rabbit, pigeon and venison. Further, the whole milk is whole goat milk or whole cow milk. Furthermore, the composite protective agent is a mixture of dextran sulfate and mannitol. Furthermore, the mass ratio of dextran sulfate to mannitol is (2-3):1. A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut the meat into cubes and set aside; S2. Beating: Put whole milk, vitamin E, composite protective agent, taurine, cellulose, trehalose and zinc sulfate into water and stir to obtain a pulp; S3. Emulsification: emulsifying the slurry at a high speed to obtain an emulsified slurry; S4. Adding enzyme: adding lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir evenly; S6. Canning: canning, sterilization and cooling to obtain pet wet food. Furthermore, in step S2, the stirring speed is 2000-3500 r / min, and the stirring time is 0.5-5 min. Furthermore, in step S3, the high-speed emulsification speed is 5000-8000 r / min, and the emulsification time is 3-4 min. Furthermore, in step S5, the stirring speed is 100-500 r / min, and the stirring time is 0.5-5 min. Furthermore, in step S6, the sterilization temperature is 80-200° C., and the sterilization time is 10-100 min. Beneficial effects: 1. The present invention adds lactase to the pet wet food formula to digest lactose and hydrolyze lactose into galactose and glucose that can be absorbed by pets, thereby avoiding the symptoms of lactose intolerance in pets caused by the addition of dairy products and improving the utilization rate of dairy products in pet food; 2. The present invention effectively combines wet food products and liquid dairy products. Dairy products are an important source of calcium. The addition of dairy products can effectively enhance calcium intake and ensure that pets can obtain sufficient calcium, thereby supporting their normal growth and development and bone health; 3. The present invention uses dextran sulfate and mannitol as composite protective agents, wherein dextran sulfate reduces the aggregation between proteins by affecting the surface charge of proteins, thereby avoiding the occurrence of flocculation and precipitation; in addition, dextran sulfate can also form a network structure with proteins through hydrogen bonds, hydrophobicity and electrostatic effects, making the system more stable, and can also effectively avoid the occurrence of flocculation and agglomeration; 4. The addition of mannitol in the present invention, as a heat denaturation protective agent, can synergize with trehalose to effectively inhibit protein denaturation, reduce the degree of change in protein structure, and improve system stability; 5. Mannitol in the present invention can also be used as a sweetener to improve the flavor of pet wet food, thereby improving the taste and feeding rate; 6. In the present invention, zinc sulfate is added to the wet food formula. On the one hand, it can serve as a nutritional enhancer to supplement the trace elements required by pets; on the other hand, when the pets chew the wet food, the whole milk in the wet food is digested by the protease and endopeptidase of oral bacteria, releasing amino acids, which react with zinc sulfate in the mouth to form a chelate. The chelate has a certain antibacterial effect and can adhere to the mouth and teeth, thereby reducing the bacterial reproduction and the formation of dental plaque and tartar in the pet's mouth. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a schematic diagram of the state of the pet wet food prepared in Example 5; Figure 2 This is a schematic diagram of the state of the pet wet food prepared in Comparative Example 1; Figure 3 This is a schematic diagram of the state of the pet wet food prepared in Comparative Example 2; Figure 4 This is a schematic diagram of the state of the pet wet food prepared in Comparative Example 3. DETAILED DESCRIPTION The present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are explanations of the present invention and the present invention is not limited to the following embodiments: Example 1 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 10kg chicken breast into cubes and set aside; S2. Beating: 10 kg of whole milk, 5 IU of vitamin E, 0.5 kg of a mixture of dextran sulfate and mannitol (mass ratio 2:1), 0.01 kg of taurine, 0.1 kg of cellulose, 0.1 kg of trehalose and 0.03 kg of zinc sulfate were placed in 30 kg of water and stirred at 2000 r / min for 5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 5000 r / min for 4 min to obtain an emulsified juice; S4. Adding enzyme: 70 g of lactase was added to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 100 r / min for 5 min; S6. Canning: seal the cans, sterilize at 80°C for 100 minutes, and cool to obtain the pet wet food. Example 2 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 20kg chicken breast into dices and set aside; S2. Beating: 20 kg of whole milk, 50 IU of vitamin E, 1 kg of a mixture of dextran sulfate and mannitol (mass ratio 2:1), 0.1 kg of taurine, 0.5 kg of cellulose, 0.2 kg of trehalose and 0.05 kg of zinc sulfate were placed in 35 kg of water and stirred at 2500 r / min for 4 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 6000 r / min for 4 min to obtain an emulsified juice; S4. Adding enzyme: 70 g of lactase was added to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 200 r / min for 4.5 min; S6. Canning: seal the cans, sterilize at 100°C for 90 minutes, and cool to obtain the pet wet food. Example 3 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 25kg chicken breast into dices and set aside; S2. Beating: 25 kg of whole milk, 100 IU of vitamin E, 1.5 kg of a mixture of dextran sulfate and mannitol (mass ratio 2.5:1), 0.5 kg of taurine, 1 kg of cellulose, 0.5 kg of trehalose and 0.08 kg of zinc sulfate were put into 40 kg of water and stirred at 2500 r / min for 3.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 6000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 75 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 300 r / min for 4 min; S6. Canning: seal the cans, sterilize at 120°C for 80 minutes, and cool to obtain wet pet food. Example 4 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 30kg duck breast into dices and set aside; S2. Beating: 30 kg of whole milk, 150 IU of vitamin E, 2 kg of a mixture of dextran sulfate and mannitol (mass ratio 2.5:1), 1 kg of taurine, 1.5 kg of cellulose, 0.8 kg of trehalose and 0.1 kg of zinc sulfate were placed in 45 kg of water and stirred at 3000 r / min for 3 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 6000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 75 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 300 r / min for 3.5 min; S6. Canning: seal the cans, sterilize at 140°C for 70 minutes, and cool to obtain wet pet food. Example 5 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 35kg chicken breast into dices and set aside; S2. Beating: 35 kg of whole milk, 200 IU of vitamin E, 2 kg of a mixture of dextran sulfate and mannitol (mass ratio 2:1), 1.5 kg of taurine, 2 kg of cellulose, 1 kg of trehalose and 0.12 kg of zinc sulfate were put into 50 kg of water and stirred at 3000 r / min for 2.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 3 min; S6. Canning: seal the cans, sterilize at 160°C for 60 minutes, and cool to obtain wet pet food. Example 6 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 40kg of fish into dices and set aside; S2. Beating: 40 kg of whole milk, 300 IU of vitamin E, 2.5 kg of a mixture of dextran sulfate and mannitol (mass ratio 3:1), 2 kg of taurine, 2.5 kg of cellulose, 1.2 kg of trehalose and 0.14 kg of zinc sulfate were put into 35 kg of water and stirred at 3500 r / min for 2 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 2 min; S6. Canning: seal the cans, sterilize at 180°C for 50 minutes, and cool to obtain wet pet food. Example 7 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the fish into cubes: Cut 45 kg of fish into cubes and set aside; S2. Beating: 45 kg of whole milk, 400 IU of vitamin E, 2.5 kg of a mixture of dextran sulfate and mannitol (mass ratio 3:1), 2.5 kg of taurine, 2.5 kg of cellulose, 1.6 kg of trehalose and 0.15 kg of zinc sulfate were put into 40 kg of water and stirred at 3000 r / min for 1 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 8000 r / min for 3 min to obtain an emulsified juice; S4. Adding enzyme: 85 g of lactase was added to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 500 r / min for 1 min; S6. Canning: seal the cans, sterilize at 180°C for 40 minutes, and cool to obtain wet pet food. Example 8 A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the fish into cubes: cut 50 kg of fish into cubes and set aside; S2. Beating: 50 kg of whole milk, 500 IU of vitamin E, 3 kg of a mixture of dextran sulfate and mannitol (mass ratio 3:1), 3 kg of taurine, 3 kg of cellulose, 2 kg of trehalose and 0.15 kg of zinc sulfate were put into 50 kg of water and stirred at 3500 r / min for 0.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 8000 r / min for 3 min to obtain an emulsified juice; S4. Adding enzyme: adding 90 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 500 r / min for 0.5 min; S6. Canning: seal the cans, sterilize at 200°C for 10 minutes, and cool to obtain wet pet food. Comparative Example 1 The difference between this comparative example and Example 5 is that no composite protective agent is added, which is as follows: A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 35kg chicken breast into dices and set aside; S2. Beating: 35 kg of whole milk, 200 IU of vitamin E, 1.5 kg of taurine, 2 kg of cellulose, 1 kg of trehalose and 0.12 kg of zinc sulfate were put into 50 kg of water and stirred at 3000 r / min for 2.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 3 min; S6. Canning: seal the cans, sterilize at 160°C for 60 minutes, and cool to obtain wet pet food. Comparative Example 2 The difference between this comparative example and Example 5 is that only dextran sulfate is added to the composite protective agent, which is as follows: A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 35kg chicken breast into dices and set aside; S2. Beating: 35 kg of whole milk, 200 IU of vitamin E, 2 kg of dextran sulfate, 1.5 kg of taurine, 2 kg of cellulose, 1 kg of trehalose and 0.12 kg of zinc sulfate were added to 50 kg of water and stirred at 3000 r / min for 2.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 3 min; S6. Canning: seal the cans, sterilize at 160°C for 60 minutes, and cool to obtain wet pet food. Comparative Example 3 The difference between this comparative example and Example 5 is that only mannitol is added to the composite protective agent, as follows: A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 35kg chicken breast into dices and set aside; S2. Beating: 35 kg of whole milk, 200 IU of vitamin E, 2 kg of mannitol, 1.5 kg of taurine, 2 kg of cellulose, 1 kg of trehalose and 0.12 kg of zinc sulfate were added to 50 kg of water and stirred at 3000 r / min for 2.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 3 min; S6. Canning: seal the cans, sterilize at 160°C for 60 minutes, and cool to obtain wet pet food. Comparative Example 4 The difference between this comparative example and Example 5 is that zinc sulfate is not added, specifically as follows: A method for preparing wet pet food using dairy products and meat products as raw materials comprises the following steps: S1. Cut the meat: cut 35kg chicken breast into dices and set aside; S2. Beating: 35 kg of whole milk, 200 IU of vitamin E, 2 kg of a mixture of dextran sulfate and mannitol (mass ratio 2:1), 1.5 kg of taurine, 2 kg of cellulose and 0.12 kg of trehalose were put into 50 kg of water and stirred at 3000 r / min for 2.5 min to obtain a slurry; S3. Emulsification: The juice was emulsified at a speed of 7000 r / min for 3.5 min to obtain an emulsified juice; S4. Adding enzyme: adding 80 g of lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir at 400 r / min for 3 min; S6. Canning: seal the cans, sterilize at 160°C for 60 minutes, and cool to obtain wet pet food. Performance Test: (1) Feeding rate Pet cats were selected as experimental subjects. Each cat was fed independently and did not eat other food during feeding. A food bowl was provided for each pet cat. One meal was fed every day. Each meal lasted for 12 hours. The same amount was fed every day. The food bowl needed to be cleaned before each feeding, and sufficient drinking water was prepared. The food utensils were fixed to prevent overturning. The position of the food bowl was exchanged when the next meal was fed. The food after each meal should not be reused. The feeding rate of each pet cat was recorded. The feeding rate was calculated according to the following formula: Feeding rate (%) = (total amount of cat food provided - remaining amount of cat food) / total amount of cat food provided * 100% Table 1 Feeding rate of wet food for pets prepared in each embodiment and comparative example sample Feed intake rate (%) sample Feed intake rate (%) Example 1 83 Example 7 82 Example 2 81 Example 8 85 Example 3 79 Comparative Example 1 69 Example 4 82 Comparative Example 2 73 Example 5 86 Comparative Example 3 74 Example 6 84 Comparative Example 4 78 As shown in Table 1, the feeding rate of the pet wet food prepared in Examples 1-8 is 79-86%, while the feeding rate of the pet wet food prepared in Comparative Example 1 without adding the composite protective agent is significantly reduced to 69%; the feeding rates of the pet wet food prepared in Comparative Example 2 with only adding dextran sulfate and Comparative Example 3 with only adding mannitol are slightly reduced. Therefore, it can be seen that the addition of the mixture of dextran sulfate and mannitol can avoid the occurrence of flocculation and precipitation in the system, improve the appearance and taste of the wet food, and thus increase the feeding rate; there is no significant difference in the pet wet food prepared in Comparative Example 4 without adding zinc sulfate. (2) Mixing uniformity (CV) The mixing uniformity of pet wet food is measured according to GB / T 5918-2008 Determination of mixing uniformity of feed products. Table 2 Mixing uniformity of wet pet food prepared in each embodiment and comparative example sample Mixing uniformity CV (%) sample Mixing uniformity CV (%) Example 1 5 Example 7 7 Example 2 4 Example 8 5 Example 3 5 Comparative Example 1 9 Example 4 6 Comparative Example 2 8 Example 5 4 Comparative Example 3 8 Example 6 5 Comparative Example 4 6 As can be seen from Table 2, the mixing uniformity of the pet wet food prepared in the embodiment of the present invention is 4-7%, while the mixing uniformity value of the pet wet food prepared in Comparative Example 1 without adding the composite protective agent is significantly higher, which shows that the components in the system fail to effectively combine, and flocculation or agglomeration occurs; the mixing uniformity values ​​of the pet wet food prepared in Comparative Example 2 with only dextran sulfate added and Comparative Example 3 with only mannitol added are slightly higher, and the smaller the CV value, the better the mixing uniformity rate; there is no significant difference in the pet wet food prepared in Comparative Example 4 without adding zinc sulfate. (3) Calcium content The calcium content in pet wet food products is determined in accordance with "GB / T 6436-2018 Determination of Calcium in Feed". Table 3 Calcium content in wet pet food prepared in each example Example 1 Example 2 Example 3 Example 4 Calcium content (g / kg) 7.53 7.52 7.53 7.51 Example 5 Example 6 Example 7 Example 8 Calcium content (g / kg) 7.56 7.49 7.55 7.52 In the home-made calcium supplementation guide, the recommended calcium addition amount for adult cats, dogs and kittens is 0.6 grams per 100 grams, in order to ensure that pets can obtain sufficient calcium to support their normal growth and development and bone health. The addition of dairy products in the present invention increases the calcium content in the pet wet food, satisfies the calcium intake of pets, and thus ensures the health of pets. (4) Pet cat dental plaque Pet cats with mild dental plaque were selected and fed with the pet wet food prepared in Examples 1-8 and Comparative Example 4, respectively. Dental plaque was evaluated at week 0, week 2, and week 4, and was divided into mild, moderate, and severe (corresponding to 0-5 points). The evaluation results are as follows: Table 4 Evaluation results of dental plaque in pet cats Week 0 Week 2 Week 4 Example 1 2.43 1.35 0.57 Example 2 2.38 1.42 0.42 Example 3 2.19 1.28 0.43 Example 4 2.31 1.19 0.61 Example 5 2.16 1.08 0.39 Example 6 2.22 1.30 0.44 Example 7 2.35 1.24 0.52 Example 8 2.27 1.13 0.51 Comparative Example 4 2.28 1.77 1.08 As can be seen from Table 4, after the pet cat ate the pet wet food prepared in Example 5, the dental plaque evaluation result was reduced from 2.16 to 0.39, and the improvement effect was very significant. However, for the pet wet food prepared in Comparative Example 4, the dental plaque evaluation result was reduced from 2.28 to 1.08, and the effect was not obvious. It can be seen that the addition of zinc sulfate in the present invention can improve the oral condition of the pet, has a certain antibacterial effect, and reduces the formation of dental plaque. (5) Cat dental calculus Pet cats with mild dental calculus were selected and fed with the pet wet food prepared in Examples 1-8 and Comparative Example 4, respectively. Dental calculus was evaluated at week 0, week 2, and week 4, and was divided into mild, moderate, and severe (corresponding to 0-5 points). The evaluation results are as follows: Table 5 Evaluation results of dental calculus in pet cats Week 0 Week 2 Week 4 Example 1 1.93 1.54 0.81 Example 2 1.86 1.46 0.65 Example 3 1.91 1.50 0.77 Example 4 1.88 1.47 0.65 Example 5 1.83 1.38 0.58 Example 6 2.03 1.51 0.79 Example 7 1.85 1.37 0.61 Example 8 1.92 1.43 0.76 Comparative Example 4 1.89 1.75 1.21 As can be seen from Table 5, after the pet cat ate the pet wet food prepared in Example 5, the dental plaque evaluation result was reduced from 1.83 to 0.58, and the improvement effect was very significant. However, for the pet wet food prepared in Comparative Example 4, the dental plaque evaluation result was reduced from 1.89 to 1.21, and the effect was not obvious. It can be seen that the addition of zinc sulfate in the present invention can improve the oral condition of pets, reduce the formation of dental calculus, and reduce the occurrence of dental diseases in pets. The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A pet wet food using dairy products and meat products as raw materials, characterized in that: The invention comprises the following components: by weight, 10-50 parts of meat, 10-50 parts of whole milk, 5-500 IU of vitamin E, 0.5-3 parts of composite protective agent, 0.07-0.09 parts of lactase, 0.01-3 parts of taurine, 30-50 parts of water, 0.1-3 parts of cellulose, 0.1-2 parts of trehalose and 0.03-0.15 parts of zinc sulfate.

2. The pet wet food using dairy products and meat products as raw materials according to claim 1, characterized in that: The piece of meat is one or more of chicken breast meat, duck, goose, cattle, sheep, fish, rabbit, pigeon and venison.

3. The pet wet food using dairy products and meat products as raw materials according to claim 1, characterized in that: The whole milk is whole goat milk or whole cow milk.

4. The pet wet food using dairy products and meat products as raw materials according to claim 1, characterized in that: The composite protective agent is a mixture of dextran sulfate and mannitol.

5. The wet pet food using dairy products and meat products as raw materials according to claim 4, characterized in that: The mass ratio of dextran sulfate to mannitol is (2-3):

1.

6. A method for preparing wet pet food using dairy products and meat products as raw materials, characterized in that: The following steps are involved: S1. Cut the meat: cut the meat into cubes and set aside; S2. Beating: Put whole milk, vitamin E, composite protective agent, taurine, cellulose, trehalose and zinc sulfate into water and stir to obtain a pulp; S3. Emulsification: emulsifying the slurry at a high speed to obtain an emulsified slurry; S4. Adding enzyme: adding lactase to the emulsified juice to obtain a mixed juice; S5. Mixing: Mix the mixed juice and diced meat and stir evenly; S6. Canning: canning, sterilization and cooling to obtain pet wet food.

7. The pet wet food using dairy products and meat products as raw materials according to claim 6, characterized in that: In step S2, the stirring speed is 2000-3500 r / min, and the stirring time is 0.5-5 min.

8. The wet pet food using dairy products and meat products as raw materials according to claim 6, characterized in that: In step S3, the high-speed emulsification speed is 5000-8000 r / min, and the emulsification time is 3-4 min.

9. The wet pet food using dairy products and meat products as raw materials according to claim 6, characterized in that: In step S5, the stirring speed is 100-500 r / min, and the stirring time is 0.5-5 min.

10. The wet pet food using dairy products and meat products as raw materials according to claim 6, characterized in that: In step S6, the sterilization temperature is 80-200° C. and the sterilization time is 10-100 min.

Images