Piglet feed and preparation method thereof

Abstract

The invention discloses a piglet feed and a preparation method thereof, and relates to the field of feeds. The piglet feed comprises 450-500 parts of puffed corn, 200-250 parts of puffed soybean, 80-100 parts of whey powder, 10-15 parts of plasma protein powder, 30-35 parts of grease, 2-3 parts of premix and 4-6 parts of feed additive, the feed additive is prepared by uniformly mixing and dissolving a water-soluble garlic extract, water-soluble dark plum powder, water-soluble cellulose and water according to a weight ratio, spray-drying and granulating to obtain a core body, the surface of the core body is wrapped with mildew-proof powder, and the mildew-proof powder is prepared from coconut powder, calcium hydrophosphate and cinnamon powder according to the weight ratio of (15-20): (1-5): (4-8). The piglet feed disclosed by the invention can give consideration to nutrients in various aspects of piglets, contributes to digestion and absorption of the piglets, can also prevent the problem of diarrhea of the piglets, is not prone to caking or mildewing, and has an important popularization value.

Description

Technical Field

[0001] The present application relates to the field of feed, and in particular to a piglet feed and a preparation method thereof. Background Art

[0002] Weaned piglets are piglets from weaning to about 70 days old. Weaning is an important turning point in the life of piglets, when they switch from a nutrition based on breast milk to a complete reliance on feed for nutrition.

[0003] Among them, the digestive system of weaned piglets is gradually developing, but it is still relatively fragile. Their growth rate will be affected by many factors such as weaning stress and feed quality. If the feed nutrition is unbalanced or the feeding management is improper, it is easy to cause problems such as slow growth and diarrhea in piglets.

[0004] Therefore, it is of great research significance to provide a feed that can promote the growth of piglets and prevent piglet diarrhea problems. Summary of the invention

[0005] In order to improve the existing problems of slow growth and easy diarrhea of ​​piglets after weaning, the present application provides a piglet feed and a preparation method thereof.

[0006] A piglet feed comprises 450-500 parts by weight of puffed corn, 200-250 parts by weight of puffed soybean, 80-100 parts by weight of whey powder, 10-15 parts by weight of plasma protein powder, 30-35 parts by weight of oil, 2-3 parts by weight of premix and 4-6 parts by weight of feed additives. The feed additives are prepared by mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a weight ratio of (3-4):(2-3):(0.02-0.06):100, spray drying and granulation to obtain a core body, and then coating the surface of the core body with anti-mildew powder, wherein the anti-mildew powder comprises coconut powder, calcium hydrogen phosphate and cinnamon powder in a weight ratio of (15-20):(1-5):(4-8).

[0007] Puffed corn is the main source of energy in piglet feed. Compared with directly using corn as the energy source of piglet feed, puffed corn is more conducive to piglet digestion and absorption.

[0008] Puffed soybeans are rich in high-quality protein and fat, and have low anti-nutritional factors, making them more suitable for digestion and absorption by piglets.

[0009] Whey powder is rich in lactose, which can provide piglets with quick energy while helping to maintain beneficial microbial flora in the intestines and promote intestinal health.

[0010] Plasma protein powder has good palatability and high protein content. It also contains a variety of biologically active substances, such as immunoglobulins, which can improve the immunity and disease resistance of piglets.

[0011] Oil can provide additional energy and improve the palatability of feed. Premixes contain a variety of nutrients to meet the comprehensive nutritional needs of piglets and promote their growth, development and health.

[0012] The main function of feed additives is to resist harmful pathogens, promote the reproduction of beneficial bacteria, improve the intestinal environment, and reduce diarrhea in piglets. In this application, feed additives are mainly made of water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and mildew-proof powder, and the mildew-proof powder specifically includes coconut powder, calcium hydrogen phosphate and cinnamon powder. Among them, water-soluble garlic extract and water-soluble black plum powder work together to inhibit and kill various pathogens such as Escherichia coli, Salmonella, Staphylococcus, etc., and promote the growth of beneficial bacteria such as bifidobacteria and lactobacilli in the intestines of piglets, and promote the growth and repair of piglet intestinal mucosa, enhance the integrity of piglet intestinal mucosa, reduce harmful bacteria from entering the blood circulation, and effectively prevent and treat diarrhea caused by bacterial infection in piglets.

[0013] However, directly adding water-soluble garlic extract and water-soluble black plum powder to piglet feed may easily reduce the piglet's feed intake due to the pungent smell of the water-soluble garlic extract, which is not conducive to the rapid growth of the piglet.

[0014] At present, the related technology dissolves and granulates the water-soluble garlic extract, and then coats the surface with a layer of polyvinyl alcohol film-forming material to cover up the pungent smell of the water-soluble garlic extract, thereby solving the problem of reduced piglet feed intake caused by the addition of water-soluble garlic extract. However, this method introduces a new problem - the polyvinyl alcohol film-forming material easily absorbs water, and after long-term storage of feed, it is easy to clump and mold, posing a threat to the health of piglets.

[0015] Therefore, in order to solve the problem of pungent smell of water-soluble garlic extract, the present invention dissolves water-soluble garlic extract, water-soluble black plum powder and water-soluble cellulose in water, and then prepares the water-soluble garlic extract, water-soluble black plum powder and water-soluble cellulose into granules through spray drying and granulation process, and then coats the surface of the granules with a layer of anti-mildew powder made of coconut powder, calcium hydrogen phosphate and cinnamon powder. The anti-mildew powder of specific composition has low water absorption, and the addition of water-soluble black plum powder, coconut powder and cinnamon powder can also synergistically mask the pungent smell of water-soluble garlic extract, improve the palatability of piglet feed, thereby preventing piglet diarrhea without affecting the feeding and normal growth of piglets.

[0016] Preferably, the weight ratio of the water-soluble garlic extract, the water-soluble black plum powder, the water-soluble cellulose and water is (3-4):(2-3):(0.03-0.04):100.

[0017] In the present application, the core of the feed additive is prepared by mixing water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in this ratio, which can not only effectively prevent diarrhea problems in piglets, but also enhance the bonding strength between the core and the outer layer of mildew-proof powder, prevent the outer layer of mildew-proof powder from falling off during the subsequent stirring process of the feed additive, and further prolong the time for the piglet feed to have caking or mildew problems, which is beneficial to improving the utilization rate of the piglet feed. At the same time, it will not affect the digestion and absorption effect of the piglet feed.

[0018] That is, the piglet feed of the present application can take into account all aspects of nutrition for piglets, while helping piglets digest and absorb, and preventing piglet diarrhea. In addition, the piglet feed is not prone to caking or mildew problems, and has important promotion value.

[0019] Preferably, the viscosity of a 2 wt % aqueous solution of the water-soluble cellulose at 20° C. is 25-30 mPa.s.

[0020] In the present application, the viscosity of the 2wt% aqueous solution of water-soluble cellulose at 20°C is controlled to be 25-30mPa.s, which is beneficial to further improve the bonding strength between the mildew-proof powder and the core body, and at the same time, will not affect the digestion and absorption effect of the piglet feed.

[0021] Preferably, the particle size of the core is in the range of 0.3-0.5 mm.

[0022] Preferably, the weight ratio of the coconut powder, calcium hydrogen phosphate and cinnamon powder is (18-20): (1-2): (4-5).

[0023] In the present application, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is controlled within the range of (18-20): (1-2): (4-5), which can further improve the palatability of feed additives and piglet feed, and is beneficial to increasing the feed intake of piglets on piglet feed.

[0024] Preferably, the preparation method of the feed additive comprises the following steps: S1, mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a proportion to obtain a premixed solution; S2, spray drying the premixed liquid to obtain a powder material; S3, adding vegetable oil to the powder material, mixing evenly, and then granulating to obtain a core; S4, mixing the core and the mildew-proof powder evenly according to a proportion, and sieving to obtain a feed additive.

[0025] Preferably, in S3, the weight ratio of the powder material to the vegetable oil is 100:(0.05-0.1).

[0026] In the process of preparing the feed additive in the present application, a small amount of vegetable oil is additionally added in the granulation step, which can improve the palatability of the feed additive on the one hand, and on the other hand, is conducive to promoting the molding of the core of the feed additive and improving the firmness of the core structure.

[0027] Preferably, in S4, the weight ratio of the core to the anti-mildew powder is 1:(2-3).

[0028] In the present application, the weight ratio of the core body to the anti-mildew powder is controlled within the range of 1:(2-3), which is conducive to the tight wrapping of the core body surface and does not cause excessive waste of the anti-mildew powder.

[0029] Preferably, the premix comprises vitamin A, vitamin D, methionine iron and glycinate zinc, and the weight ratio of the vitamin A, vitamin D, methionine iron and glycinate zinc is (3-4):(1-2):(2-3):2.

[0030] In the present application, the premix adopts a composition of vitamin A, vitamin D, methionine iron and glycine zinc, which is beneficial to promote the comprehensive nutrient absorption of piglets and promote the growth of piglets.

[0031] In a second aspect, the present application provides a method for preparing a piglet feed using the following technical solution: A method for preparing piglet feed comprises the following steps: The puffed corn, puffed soybeans, whey powder, plasma protein powder, oil, premix and feed additive are uniformly mixed according to a proportion to obtain a mixture; The mixed material is granulated to obtain piglet feed.

[0032] In summary, this application at least includes the following beneficial technical effects: 1. The piglet feed of the present application is prepared by adding feed additives to puffed corn, puffed soybeans, whey powder, plasma protein powder, oil and premix. The feed additives are prepared by mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a weight ratio, spray drying and granulation to obtain a core, and then coating the surface of the core with anti-mold powder. The piglet feed of the present application can take into account all aspects of the nutrition of the piglets, and at the same time help the piglets digest and absorb, and can also prevent the problem of diarrhea in the piglets. The piglet feed is not easy to caking or mildew, and has important promotion value.

[0033] 2. The present application optimizes the ratio of water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water, which can not only effectively prevent diarrhea in piglets, but also enhance the bonding strength between the core and the outer layer of mildew-proof powder, prevent the outer layer of mildew-proof powder from falling off during the subsequent stirring process of feed additives, and further prolong the time for piglet feed to have caking or mildew problems, which is beneficial to improve the utilization rate of piglet feed. At the same time, it will not affect the digestion and absorption effect of piglet feed. DETAILED DESCRIPTION

[0034] The present application is further described below in conjunction with specific experiments. Unless otherwise specified, all raw materials in the present application can be obtained commercially.

[0035] Preparation Example [Preparation Example 1] A feed additive comprising the following steps: S1. Mix and dissolve water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose (specifically hydroxypropyl methylcellulose, the viscosity of 2 wt % aqueous solution of hydroxypropyl methylcellulose at 20° C. is 25.5 mPa.s) and water uniformly to obtain a premixed solution; wherein the weight ratio of garlic extract, water-soluble black plum powder, water-soluble cellulose and water is 3:3:0.02:100; S2, spray drying the premixed liquid to obtain a powder material; S3, adding corn oil to the powder material, the weight ratio of the powder material to the corn oil is 100:0.05, mixing evenly, and then granulating and sieving to obtain a core with a particle size range of 0.3-0.5 mm; S4. Evenly mix the core body and the anti-mildew powder, and pass through a 40-mesh sieve to obtain a feed additive; wherein the anti-mildew powder is a combination of coconut powder, calcium hydrogen phosphate and cinnamon powder, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is 15:5:8, and the weight ratio of the core body to the anti-mildew powder is 1:2.

[0036] [Preparation Example 2] A feed additive comprising the following steps: S1. Mix and dissolve water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose (specifically hydroxypropyl methylcellulose, the viscosity of 2 wt% aqueous solution of hydroxypropyl methylcellulose at 20° C. is 25.5 mPa.s) and water uniformly to obtain a premixed solution; wherein the weight ratio of garlic extract, water-soluble black plum powder, water-soluble cellulose and water is 4:2:0.06:100; S2, spray drying the premixed liquid to obtain a powder material; S3, adding corn oil to the powder material, the weight ratio of the powder material to the corn oil is 100:0.1, mixing evenly, and then granulating and sieving to obtain a core with a particle size range of 0.3-0.5 mm; S4. Evenly mix the core body and the anti-mildew powder, and pass through a 40-mesh sieve to obtain a feed additive; wherein the anti-mildew powder is a composition of coconut powder, calcium hydrogen phosphate and cinnamon powder, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is 20:1:4, and the weight ratio of the core body to the anti-mildew powder is 1:3.

[0037] [Preparation Example 3] A feed additive, which differs from [Preparation Example 1] in that: The weight ratio of garlic extract, water-soluble black plum powder, water-soluble cellulose and water is 3:3:0.035:100.

[0038] [Preparation Example 4] A feed additive, which differs from [Preparation Example 1] in that: The weight ratio of garlic extract, water-soluble black plum powder, water-soluble cellulose and water is 3:3:0.06:100.

[0039] [Preparation Example 5] A feed additive, which differs from [Preparation Example 3] in that: in this preparation example, the water-soluble cellulose is specifically hydroxypropyl methylcellulose, and the viscosity of a 2wt% aqueous solution of hydroxypropyl methylcellulose at 20°C is 60mPa.s.

[0040] [Preparation Example 6] A feed additive, which differs from [Preparation Example 3] in that: In the anti-mold powder, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is 15:1.5:4.5.

[0041] [Preparation Example 7] A feed additive, which differs from [Preparation Example 3] in that: In the anti-mold powder, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is 19:1.5:4.5.

[0042] [Preparation Example 8] A feed additive, which differs from [Preparation Example 3] in that: In the anti-mold powder, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is 19:5:4.5. Example

[0043] [Example 1] A piglet feed is prepared from the following raw materials: Puffed corn: 450kg; Expanded soybeans: 250kg; Whey powder: 80kg; Grease: 15 kg; in this embodiment, the grease is corn oil; Premix: 2 kg; in this embodiment, the premix is ​​a composition of vitamin A, vitamin D, methionine iron and glycinate zinc, and the weight ratio of vitamin A, vitamin D, methionine iron and glycinate zinc is 3:2:2:2; Feed additive: 4 kg; in this embodiment, the feed additive adopts the feed additive prepared in [Preparation Example 1].

[0044] In this embodiment, the preparation method of piglet feed comprises the following steps: The puffed corn, puffed soybean, whey powder, plasma protein powder, oil, premix and feed additive are uniformly mixed according to the proportion to obtain a mixture; The mixed material is granulated to obtain piglet feed with a particle diameter of 2-4 mm and a length of 5-10 mm.

[0045] [Example 2] A piglet feed, which differs from [Example 1] in that the raw materials and their proportions are different. In this example, the raw materials and their proportions are as follows: Puffed corn: 500kg; Expanded soybeans: 200kg; Whey powder: 100kg; Grease: 10 kg; in this embodiment, the grease is corn oil; Premix: 3 kg; In this embodiment, the premix is ​​a composition of vitamin A, vitamin D, methionine iron and glycinate zinc, and the weight ratio of vitamin A, vitamin D, methionine iron and glycinate zinc is 4:1:3:2; Feed additive: 6 kg; in this embodiment, the feed additive adopts the feed additive prepared in [Preparation Example 2].

[0046] [Example 3] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 3].

[0047] [Example 4] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 4].

[0048] [Example 5] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 5].

[0049] [Example 6] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 6].

[0050] [Example 7] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 7].

[0051] [Example 8] A piglet feed, which differs from [Example 1] in that a different feed additive is used. In this embodiment, the feed additive is the feed additive prepared in [Preparation Example 8].

[0052] Comparative Example [Comparative Example 1] A piglet feed, which is different from Example 1 in that a different feed additive is used. In this comparative example, the feed additive is a mixture of a water-soluble garlic extract and a water-soluble dark plum powder, and the weight ratio of the water-soluble garlic extract to the water-soluble dark plum powder is 1:1.

[0053] [Comparative Example 2] A piglet feed, which differs from Example 1 in that a different feed additive is used. In this comparative example, the feed additive is a mixture of water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose, coconut powder, calcium hydrogen phosphate and cinnamon powder, and the weight ratio of the water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose, coconut powder, calcium hydrogen phosphate and cinnamon powder is 3:3:0.2:1:0.2:0.5.

[0054] [Comparative Example 3] A piglet feed, which differs from [Example 1] in that: When preparing the feed additive, no water-soluble cellulose is added in step S1.

[0055] [Comparative Example 4] A piglet feed, which differs from [Example 1] in that: When preparing the feed additive, in step S1, the weight ratio of garlic extract, water-soluble black plum powder, water-soluble cellulose and water is 3:3:0.2:100.

[0056] [Comparative Example 5] A piglet feed, which differs from [Example 1] in that: When preparing the feed additive, step S4 was omitted.

[0057] Performance testing Test 1 1. Experimental subjects: 21-day-old weaned three-way hybrid piglets of uniform size, similar weight and health condition.

[0058] 2. Experimental number: 1,300.

[0059] 3. Feeding method: 1300 pigs were divided into 13 groups, with 100 pigs in each group, and fed with the piglet feed in Examples 1-8 and Comparative Examples 1-5 (sealed and stored for 30 days), respectively. Among them, 6000 g of piglet feed was added at 8:00, 11:00, 14:00, 17:00 and 20:00 every day. The feed residue of the previous feeding was weighed before each feeding. The test period was 14 days, and the weight of the piglets 14 days before and 14 days after were measured respectively.

[0060] 4. Data recording: Calculate the average daily feed intake, average daily weight gain, feed-to-meat ratio and diarrhea rate (the percentage of piglets with diarrhea). The lower the feed-to-meat ratio, the easier it is for the piglets to absorb the feed. A diarrhea rate below 5% is considered qualified and recorded in Table 1 below.

[0061] Test 2 The piglet feed in each embodiment and comparative example was subjected to a stability test, specifically, the piglet feed was placed in the open, the state of the feed was observed every 5 days, the time when the feed had caking or mold problems was recorded, and the results were recorded in the following Table 2, wherein the 5 days when caking or mold occurred were not included in the recording range.

[0062] Table 1 Table 2 The difference between Comparative Examples 1-5 and Example 1 is that: the feed additive used in Comparative Example 1 is a mixture of water-soluble garlic extract and water-soluble black plum powder; the feed additive used in Comparative Example 2 is a mixture of water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose, coconut powder, calcium hydrogen phosphate and cinnamon powder; the core of the feed additive used in Comparative Example 3 does not contain water-soluble cellulose; the amount of water-soluble cellulose in the core of the feed additive used in Comparative Example 4 is different; the feed additive used in Comparative Example 5 has only a core without anti-mildew powder coating; the feed additive used in Example 1 is prepared by mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a specific weight ratio, spray drying and granulating to obtain a core, and then coating the surface of the core with anti-mildew powder. Combined with the data in Table 1, it can be seen that the average daily feed intake and average daily weight gain of the piglet feed in Example 1 are much higher than those of the piglet feed in Comparative Example 1; the average daily feed intake and average daily weight gain of the piglet feed in Comparative Example 2 are higher than those of Comparative Example 1 but lower than those of Example 1; the average daily feed intake and average daily weight gain of the piglet feed in Comparative Example 3 are equivalent to those of Comparative Example 2, but lower than those of Example 1; the average daily feed intake of the piglet feed in Comparative Example 4 is equivalent to that of Example 1, but the average daily weight gain is much lower than that of Example 1, and the diarrhea rate is higher than 5%, indicating that the piglet feed in Example 1 is more easily digested and absorbed by piglets; the average daily feed intake and average daily weight gain of the piglet feed in Example 5 are much lower than those in Example 1, which shows that the piglet feed in Example 1 can better arouse the appetite of piglets, is more conducive to the absorption of piglets, and can promote the rapid growth of piglets. In addition, combined with the data in Table 2, it can be seen that the caking time and mold time of the piglet feed in Comparative Examples 1, 3, and 4 are better than those in Example 1, and the caking time and mold time of the piglet feed in Comparative Examples 2 and 5 are much lower than those in Example 1. Therefore, considering the feed intake, digestion and absorption effect, diarrhea rate, and stability of the piglet feed, the piglet feed in Example 1 is preferred.

[0063] According to the data in Examples 3-4 and 1 and Tables 1-2, it can be seen that in the present application, the core of the feed additive is prepared by mixing water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in this ratio, which can not only effectively prevent diarrhea in piglets, but also enhance the bonding strength between the core and the outer layer of mildew-proof powder, prevent the outer layer of mildew-proof powder from falling off during the subsequent stirring of the feed additive, and further prolong the time for the piglet feed to have caking or mildew problems, which is beneficial to improve the utilization rate of the piglet feed, and at the same time, will not affect the digestion and absorption effect of the piglet feed.

[0064] According to the data in Examples 3 and 5 and Tables 1-2, in the present application, the viscosity of the 2wt% aqueous solution of water-soluble cellulose at 20°C is controlled to be 25-30mPa.s, which is beneficial to further improve the bonding strength between the mildew-proof powder and the core body, and at the same time, will not affect the digestion and absorption effect of the piglet feed.

[0065] According to the data in Examples 3, 6-8 and Tables 1-2, in the present application, the weight ratio of coconut powder, calcium hydrogen phosphate and cinnamon powder is controlled within the range of (18-20): (1-2): (4-5), which can further improve the palatability of feed additives and piglet feed, and is beneficial to increasing the feed intake of piglets on piglet feed. At the same time, it is also beneficial to further extend the agglomeration time and mildew prevention time of piglet feed.

[0066] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A piglet feed, characterized in that: The invention comprises 450-500 parts by weight of puffed corn, 200-250 parts by weight of puffed soybean, 80-100 parts by weight of whey powder, 10-15 parts by weight of plasma protein powder, 30-35 parts by weight of oil, 2-3 parts by weight of premix and 4-6 parts by weight of feed additive. The feed additive is prepared by mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a weight ratio of (3-4): (2-3): (0.02-0.06): 100, spray drying and granulation to obtain a core body, and then coating the surface of the core body with anti-mold powder to obtain the core body. The anti-mold powder comprises coconut powder, calcium hydrogen phosphate and cinnamon powder in a weight ratio of (15-20): (1-5): (4-8).

2. A piglet feed according to claim 1, characterized in that: The weight ratio of the water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water is (3-4): (2-3): (0.03-0.04):

100.

3. A piglet feed according to claim 1, characterized in that: The viscosity of a 2 wt % aqueous solution of the water-soluble cellulose at 20° C. is 25-30 mPa.s.

4. A piglet feed according to claim 1, characterized in that: The particle size of the core is in the range of 0.3-0.5 mm.

5. The piglet feed according to claim 1, characterized in that: The weight ratio of the coconut powder, calcium hydrogen phosphate and cinnamon powder is (18-20): (1-2): (4-5).

6. A piglet feed according to any one of claims 1 to 5, characterized in that: The preparation method of the feed additive comprises the following steps: S1, mixing and dissolving water-soluble garlic extract, water-soluble black plum powder, water-soluble cellulose and water in a proportion to obtain a premixed solution; S2, spray drying the premixed liquid to obtain a powder material; S3, adding vegetable oil to the powder material, mixing evenly, and then granulating to obtain a core; S4, mixing the core and the mildew-proof powder evenly according to a proportion, and sieving to obtain a feed additive.

7. A piglet feed according to claim 6, characterized in that: In S3, the weight ratio of the powder material to the vegetable oil is 100:(0.05-0.1).

8. A piglet feed according to claim 6, characterized in that: In S4, the weight ratio of the core to the anti-mildew powder is 1:(2-3).

9. A piglet feed according to any one of claims 1 to 5, characterized in that: The premix includes vitamin A, vitamin D, methionine iron and glycine zinc, and the weight ratio of the vitamin A, vitamin D, methionine iron and glycine zinc is (3-4): (1-2): (2-3):

2.

10. A method for preparing piglet feed, based on the piglet feed according to any one of claims 1 to 9, characterized in that: The following steps are involved: The puffed corn, puffed soybeans, whey powder, plasma protein powder, oil, premix and feed additive are uniformly mixed according to a proportion to obtain a mixture; The mixed material is granulated to obtain piglet feed.

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