Fat powder for promoting rapid fattening of piglets and preparation method and application thereof

Abstract

This invention relates to a fat powder for promoting rapid weight gain in piglets, its preparation method, and its application. The raw materials for preparing the fat powder include 1,3-dioleoyl-2-palmitoyl glycerol, rice bran oil, basa fish oil, soybean lecithin oil, deep-sea fish oil, bile salts, emulsifiers, antioxidants, fat-soluble vitamins, and a carrier. This fat powder can be directly added to existing piglet feed, making it convenient, efficient, and highly digestible. It promotes rapid weight gain and improves body fat percentage, making it suitable for raising and producing piglets suitable for roast suckling pigs and roasted pigs, reducing pig source costs and resulting in significant economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of pig feed technology, and relates to a fat powder that promotes rapid weight gain in piglets, its preparation method, and its application. Background Technology

[0002] Roast suckling pig and roast pork are classic Chinese delicacies, characterized by their golden color, crispy skin, tender meat, and irresistible aroma. They are widely loved and are essential dishes for festivals and holidays. The raw materials for roast suckling pig and roast pork are generally piglets weighing 15kg-50kg. The quality of the subcutaneous fat and flavor of the piglets is important; therefore, local breeds or miniature pigs with higher body fat content are usually preferred.

[0003] However, in my country's current pig farming system, the vast majority of pigs raised are lean breeds with very low body fat, only one-third that of native pigs. This makes the piglets commonly supplied to the market unsuitable for the quality requirements of roast suckling pig and roast pork, affecting consumer taste and satisfaction. On the other hand, using native or fragrant pigs for roasting would not only have a long breeding cycle but also be prohibitively expensive. Furthermore, current feed nutrition research primarily focuses on nutritional systems targeting pigs weighing over 110kg for slaughter, while the nutritional goals for piglets and gestational pigs are growth, development, and skeletal expansion. Fattening piglets is considered a measure that can negatively impact later weight gain efficiency, and there is currently a lack of feed products or technologies specifically designed for fattening piglets.

[0004] Therefore, developing a product that can promote the rapid fattening of piglets, specifically meet the fattening needs of piglets, reduce the cost of piglets for roast suckling pig and roast pig, and improve the flavor of meat products is of great practical significance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a fat powder that promotes rapid weight gain in piglets, its preparation method, and its application.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a fat powder that promotes rapid fattening of piglets, wherein the raw materials for preparing the fat powder include 1,3-dioleoyl-2-palmitoylglycerol triglyceride, rice bran oil, basa fish oil, soybean lecithin oil, deep-sea fish oil, bile salts, emulsifiers, antioxidants, fat-soluble vitamins, and a carrier.

[0008] The fat powder involved in this invention is based on the principle of lipid digestion and deposition in piglets. A lipid nutrition formula with a structure similar to that of piglet body fat fatty acids is designed. This formula not only contains a large amount of OPO structured lipids, but also various fatty acids that can promote the deposition of piglet body fat. Among them, 1,3-dioleoyl-2-palmitoyl triglyceride and basa fish oil have Sn-2 palmitic acid content similar to that of piglet body fat, both exceeding 50%, which provides a rich glycerol framework for the precise deposition of piglet body fat. At the same time, after the remaining fats are hydrolyzed in the piglet's body, they can significantly increase the free fatty acids such as oleic acid, linoleic acid and ω-3 essential fatty acids required for the synthesis of piglet body fat in the blood. After being transported to adipose tissue, they can quickly combine with palmitic acid at the Sn-2 position to form triglycerides and be deposited. When this fat powder is mixed with feed and fed to piglets, it can meet the nutritional needs of piglets for fattening. Its lipid composition can be deposited into the body fat of piglets, promoting subcutaneous fat deposition and meat quality improvement, allowing piglets to gain weight quickly and meet the specific requirements of roast suckling pigs and roast pigs for high body fat percentage and flavor.

[0009] Fat-soluble vitamins work synergistically with fat components to further meet the nutritional needs of piglets for fattening, promoting subcutaneous fat deposition and improving meat quality. Emulsifiers significantly reduce oil droplet diameter and greatly increase droplet surface area. The addition of exogenous bile salts significantly improves the formation efficiency of micelles and the probability of contact with lipases, thereby significantly improving the digestibility and utilization of fats, ultimately promoting increased body fat percentage in piglets. Antioxidants maintain the stability of fat components, ensuring better efficacy.

[0010] Preferably, the raw materials for preparing the fat powder include, by weight, 15-25 parts of 1,3-dioleoyl-2-palmitoyl glycerol, 10-15 parts of rice bran oil, 5-10 parts of basa fish oil, 3-6 parts of soybean lecithin oil, 3-6 parts of deep-sea fish oil, 0.1-0.5 parts of bile salts, 0.5-1 part of emulsifier, 0.2-0.8 parts of antioxidant, 0.1-0.5 parts of fat-soluble vitamins, and 40-60 parts of carrier.

[0011] When the raw materials for preparing fat powder are combined in the specific weight ratios mentioned above, their effects on promoting subcutaneous fat deposition in piglets, increasing body fat percentage, and improving meat quality are more pronounced.

[0012] The weight parts of the 1,3-dioleoyl-2-palmitoyl glycerol can be 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, etc.

[0013] The rice bran oil can be in the following weight proportions: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0014] The basa fish oil can be in the following weight proportions: 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, etc.

[0015] The soybean lecithin oil can be in the following weight proportions: 3 parts, 4 parts, 4.5 parts, 5 parts, 6 parts, etc.

[0016] The deep-sea fish oil can be in parts by weight of 3, 4, 4.5, 5, or 6 parts, etc.

[0017] The weight parts of the bile salts can be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, etc.

[0018] The emulsifier can be present in weight parts of 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or 1 part, etc.

[0019] The antioxidant can be present in parts by weight of 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, etc.

[0020] The fat-soluble vitamins may be present in weight portions of 0.1, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc.

[0021] The weight fractions of the carrier can be 40, 42, 45, 47, 50, 52, 55, 57, 60, etc.

[0022] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0023] Preferably, the raw materials for preparing the emulsifier include sucrose fatty acid esters, lysophosphatidylcholine, modified phospholipids, Tween 80, polyglycerol fatty acid esters, and starch.

[0024] The emulsifiers in the above-mentioned specific formulations can have a more significant emulsifying effect on the above-mentioned specific oil components, that is, they are more effective in reducing the diameter of oil droplets, improving the digestibility and utilization of oil, and ultimately promoting the body fat percentage of piglets.

[0025] Preferably, the raw materials for preparing the emulsifier include, by weight, 10-20 parts of sucrose fatty acid ester, 5-10 parts of lysophosphatidylcholine, 10-15 parts of modified phospholipid, 20-25 parts of Tween 80, 5-7 parts of polyglycerol fatty acid ester, and 23-50 parts of starch.

[0026] The weight parts of the sucrose fatty acid ester can be 10, 12, 14, 15, 17, 18, 19, 20, etc.

[0027] The weight fractions of the lysophosphatidylcholine can be 5, 6, 7, 8, 9, or 10 parts, etc.

[0028] The modified phospholipid can be in the following weight proportions: 10 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0029] The weight fractions of Tween 80 can be 20, 22, 23, 24, 25, etc.

[0030] The polyglycerol fatty acid ester can be in parts by weight of 5, 5.5, 6, 6.5, 7, etc.

[0031] The starch can be in parts by weight of 23, 25, 28, 30, 32, 35, 40, 42, 45, or 50 parts.

[0032] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0033] Preferably, the raw materials for preparing the antioxidant include tea polyphenol palmitate, butylated hydroxytoluene, tert-butylhydroquinone, and a carrier material.

[0034] The antioxidants in the above-mentioned specific formulation can have a more significant stabilizing effect on the above-mentioned specific oil components, that is, they are more effective in ensuring that the oil is not easily oxidized and ultimately promoting the body fat percentage of piglets.

[0035] Preferably, the raw materials for preparing the antioxidant include, by weight, 5-15 parts of tea polyphenol palmitate, 4-12 parts of butylated hydroxytoluene, 1-5 parts of tert-butylhydroquinone, and 70-90 parts of carrier material.

[0036] The weight parts of the tea polyphenol palmitate can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, etc.

[0037] The weight parts of the butylated hydroxytoluene can be 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0038] The tert-butylhydroquinone can be present in parts by weight of 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, etc.

[0039] The weight percentages of the carrier material can be 70, 72, 75, 78, 80, 82, 85, 88, 90, etc.

[0040] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0041] Preferably, the fat-soluble vitamins include vitamin A, vitamin D3, and vitamin E.

[0042] The vitamin components in the above-mentioned specific formula can work synergistically with the above-mentioned specific oil components, that is, it is more effective in assisting the oil components, further meeting the nutritional needs of piglets for fattening, and further promoting subcutaneous fat deposition and meat quality improvement in piglets.

[0043] Preferably, the vitamin A content in the fat powder is 30,000-150,000 IU / kg, such as 30,000 IU / kg, 40,000 IU / kg, 50,000 IU / kg, 60,000 IU / kg, 80,000 IU / kg, 100,000 IU / kg, 120,000 IU / kg, 150,000 IU / kg, etc.

[0044] Preferably, the vitamin D3 content in the fat powder is 6000-30000 IU / kg, such as 6000 IU / kg, 8000 IU / kg, 10000 IU / kg, 12000 IU / kg, 15000 IU / kg, 20000 IU / kg, 22000 IU / kg, 25000 IU / kg, 30000 IU / kg, etc.

[0045] Preferably, the vitamin E content in the fat powder is 150-750 mg / kg, such as 150 mg / kg, 200 mg / kg, 250 mg / kg, 300 mg / kg, 350 mg / kg, 400 mg / kg, 450 mg / kg, 500 mg / kg, 550 mg / kg, 650 mg / kg, 750 mg / kg, etc.

[0046] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0047] Preferably, the carrier comprises any one or a combination of at least two of puffed corn flour, puffed coconut flakes, or puffed rice flour.

[0048] Preferably, the carrier includes puffed corn flour, puffed coconut flakes, and puffed rice flour.

[0049] Compared to the single carrier of puffed corn flour commonly used in fat powder on the market, the above-mentioned composite carrier with a specific combination method adds a certain proportion of puffed rice flour and puffed coconut flakes. Its starch structure is more suitable for piglets to digest and absorb. The coconut flakes not only have a rich coconut aroma, which promotes feed intake, but are also rich in medium-chain lipids, which have the characteristics of rapid energy supply and certain antibacterial properties. After quickly meeting the energy needs of piglets, it has a synergistic effect on increasing the deposition of long-chain fatty acids in the muscle and improving the meat flavor.

[0050] Preferably, the carrier comprises, by weight, 30-50 parts of puffed corn flour, 20-40 parts of puffed coconut flakes, and 20-30 parts of puffed rice flour.

[0051] The weight percentages of the puffed corn flour can be 30, 32, 34, 35, 37, 38, 40, 42, 45, 47, 50, etc.

[0052] The weight percentages of the puffed coconut flakes can be 20, 22, 24, 25, 27, 28, 30, 32, 35, 37, or 40 parts, etc.

[0053] The puffed rice flour can be in the following weight proportions: 20 parts, 22 parts, 23 parts, 24 parts, 25 parts, 27 parts, 28 parts, 30 parts, etc.

[0054] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0055] In a second aspect, the present invention provides a method for preparing fat powder for promoting rapid fattening of piglets according to the first aspect, the preparation method comprising the following steps:

[0056] (1) Mix 1,3-dioleoyl-2-palmitoylglycerol, rice bran oil, basa fish oil, soybean lecithin oil, deep-sea fish oil, bile salts, emulsifier, antioxidant, and fat-soluble vitamins to obtain a mixture;

[0057] (2) The mixture is emulsified to obtain an emulsion;

[0058] (3) The emulsion is adsorbed onto the carrier to obtain a solid powder, namely the fat powder.

[0059] The preparation method of this fat powder is simple and easy, the raw materials are widely available, it does not contain harmful substances, and it has no adverse effects on piglet breeding and the environment.

[0060] Preferably, the specific operation of mixing in step (1) is as follows:

[0061] 1,3-Dioleoyl-2-palmitoylglycerol, rice bran oil, and basa fish oil are first mixed at 45-65℃ (e.g., 45℃, 47℃, 48℃, 50℃, 52℃, 55℃, 60℃, 62℃, 65℃, etc.), then mixed with soybean lecithin oil and deep-sea fish oil at 35-42℃ (e.g., 35℃, 37℃, 38℃, 39℃, 40℃, 41℃, 42℃, etc.), and then mixed with bile salts, emulsifiers, antioxidants, and fat-soluble vitamins at 35-42℃ (e.g., 35℃, 37℃, 38℃, 39℃, 40℃, 41℃, 42℃, etc.) to obtain a mixture.

[0062] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0063] Preferably, the emulsification process in step (2) is a two-stage emulsification process. The first stage of emulsification is carried out at 2.0-4.0 MPa (e.g., 2.0 MPa, 2.5 MPa, 3.0 MPa, 3.5 MPa, 4.0 MPa, etc.) and 25,000-30,000 rpm (e.g., 25,000 rpm, 26,000 rpm, 27,000 rpm, 28,000 rpm, 29,000 rpm, 30,000 rpm, etc.). The second stage of emulsification is carried out at 15-30 MPa (e.g., 15 MPa, 18 MPa, 20 MPa, 22 MPa, 25 MPa, 30 MPa, etc.) and 25,000-30,000 rpm (e.g., 25,000 rpm, 26,000 rpm, 27,000 rpm, 28,000 rpm, 29,000 rpm, 30,000 rpm, etc.).

[0064] Preferably, step (2) employs a high-pressure homogenization pre-digestion technique, which reduces the oil droplet diameter from 100 μm to only 1-2 μm, greatly increasing the surface area of ​​the oil droplets. This significantly improves the formation efficiency of micro-micelles and the probability of contact with lipase, thereby significantly improving the digestion, absorption, and utilization rate of oils. This is far superior to oils that have not been treated with high-pressure homogenization technology using emulsifiers.

[0065] Preferably, in step (3), the emulsion is mixed and adsorbed with the carrier using a spray mixer at a pressure of 15-20 MPa (e.g., 15 MPa, 16 MPa, 17 MPa, 18 MPa, 19 MPa, 20 MPa, etc.) and a spray rate of 15-25 L / min (e.g., 15 L / min, 25 L / min, 25 L / min, 25 L / min, 25 L / min, 25 L / min, etc.).

[0066] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0067] Thirdly, the present invention provides the use of the fat powder that promotes rapid fattening of piglets according to the first aspect in the preparation of piglet feed.

[0068] Compared with the prior art, the present invention has the following beneficial effects:

[0069] Currently, the mainstream breeding goal for piglets is primarily focused on growth and skeletal development, avoiding excessive body fat accumulation, which would reduce the weight gain efficiency of later-stage adult pigs. The fat powder involved in this invention allows piglets to rapidly gain weight and improve body fat and subcutaneous fat percentage, enabling them to reach the slaughter body fat standard at 15kg-50kg, thus meeting the specific feed requirements for roast suckling pigs and roast pigs. This fat powder can be directly added to existing piglet feed, offering convenience, efficiency, and high digestibility. It features rapid weight gain and improved body fat percentage, enabling the breeding and production of piglets suitable for roast suckling pigs and roast pigs, reducing pig source costs, and resulting in significant economic benefits. Detailed Implementation

[0070] To further illustrate the technical means and effects of the present invention, the following describes the technical solution of the present invention in conjunction with preferred embodiments of the present invention. However, the present invention is not limited to the scope of the embodiments.

[0071] The complex fat-soluble vitamins mentioned below are custom-made products from Shenzhen Jinfuyuan Biotechnology Co., Ltd., while other raw materials are commercially available materials commonly used in this field.

[0072] Preparation Example 1-1

[0073] This preparation example provides a composite emulsifier, the raw materials of which, by weight, include 15 parts of sucrose fatty acid ester, 7 parts of lysophosphatidylcholine, 13 parts of modified phospholipid, 20 parts of Tween 80, 5 parts of polyglycerol fatty acid ester (PGE), and 40 parts of starch.

[0074] The preparation method is as follows: sucrose fatty acid ester, lysophosphatidylcholine, modified phospholipid, Tween 80, polyglycerol fatty acid ester (PGE) and starch are accurately weighed according to the formula, and then put into a V-type high-efficiency mixer in sequence. The mixer is stirred at 60 rpm for 4 minutes and then taken out to obtain the composite emulsifier.

[0075] Preparation Examples 1-2

[0076] This preparation example provides a composite emulsifier whose raw materials differ from those in Preparation Example 1-1 in that they lack sucrose fatty acid esters and modified phospholipids, and their weights are proportionally distributed among lysophosphatidylcholine, Tween 80, polyglycerol fatty acid esters, and starch.

[0077] The preparation method is as follows: accurately weigh lysophosphatidylcholine, Tween 80, polyglycerol fatty acid ester, and starch according to the formula, and put them into a V-type high-efficiency mixer in sequence. Mix them evenly for 4 minutes at a speed of 60 rpm, and then take them out to obtain the composite emulsifier.

[0078] Preparation Examples 1-3

[0079] This preparation example provides a composite emulsifier whose raw materials differ from those in Preparation Example 1-1 in that they lack lysophosphatidylcholine and Tween 80, and their weights are proportionally distributed among sucrose fatty acid esters, modified phospholipids, polyglycerol fatty acid esters, and starch.

[0080] The preparation method is as follows: sucrose fatty acid ester, modified phospholipid, polyglycerol fatty acid ester, and starch are accurately weighed according to the formula, and then added into a V-type high-efficiency mixer in sequence. The mixer is rotated at 60 rpm and mixed evenly for 4 minutes. The composite emulsifier is then obtained.

[0081] Preparation Examples 1-4

[0082] This preparation example provides a composite emulsifier whose raw materials differ from those in Preparation Example 1-1 in that they lack polyglycerol fatty acid esters and starch, and their weights are proportionally distributed to the weights of sucrose fatty acid esters, modified phospholipids, lysophosphatidylcholine, and Tween 80.

[0083] The preparation method is as follows: sucrose fatty acid ester, modified phospholipid, lysophosphatidylcholine and Tween 80 are accurately weighed according to the formula, and then put into a V-type high-efficiency mixer in sequence. The mixer is stirred at 60 rpm for 4 minutes and then taken out to obtain the composite emulsifier.

[0084] Preparation Example 2-1

[0085] This preparation example provides a composite antioxidant, the raw materials of which include, by weight, 10 parts of tea polyphenol palmitate, 8 parts of butylated hydroxytoluene (BHT), 2 parts of tert-butylhydroquinone (TBHQ), and 80 parts of silica (carrier).

[0086] The preparation method is as follows: accurately weigh tea polyphenol palmitate, butylated hydroxytoluene (BHT), tert-butylhydroquinone (TBHQ) and silica, put them into a V-type high-efficiency mixer, mix them evenly for 5 minutes at a speed of 50 rpm, and take them out to obtain the composite antioxidant.

[0087] Preparation Example 2-2

[0088] This preparation example provides a composite antioxidant, the difference between which is the raw material of preparation example 2-1 is the absence of tea polyphenol palmitate, which is distributed by weight to the weight of butylated hydroxytoluene and tert-butylhydroquinone.

[0089] The preparation method is as follows: After accurately weighing dibutylhydroxytoluene, tert-butylhydroquinone and silicon dioxide, they are put into a V-type high-efficiency mixer and mixed evenly for 5 minutes at a speed of 50 rpm. The composite antioxidant is then obtained.

[0090] Preparation Examples 2-3

[0091] This preparation example provides a composite antioxidant, the difference between the raw materials used in preparation example 2-1 and preparation example 2-1 is that it lacks butylated hydroxytoluene and its weight is proportionally distributed to the weight of tea polyphenol palmitate and tert-butylhydroquinone.

[0092] The preparation method is as follows: accurately weigh tea polyphenol palmitate, tert-butylhydroquinone and silicon dioxide, put them into a V-type high-efficiency mixer, mix them evenly for 5 minutes at a speed of 50 rpm, and then take them out to obtain the composite antioxidant.

[0093] Preparation Examples 2-4

[0094] This preparation example provides a composite antioxidant, the difference between the raw materials used in preparation example 2-1 and preparation example 2-1 is that it lacks tert-butylhydroquinone and its weight is proportionally distributed to the weight of tea polyphenol palmitate and butylated hydroxytoluene.

[0095] The preparation method is as follows: After accurately weighing tea polyphenol palmitate, butylated hydroxytoluene and silica, put them into a V-type high-efficiency mixer, mix them evenly for 5 minutes at a speed of 50 rpm, and then take them out to obtain the composite antioxidant.

[0096] Example 1

[0097] This embodiment provides a fat powder, the raw materials of which, by weight, are: 20 parts of 1,3-dioleoyl-2-palmitoylglycerol triglyceride, 12 parts of rice bran oil, 10 parts of basa fish oil, 4 parts of soybean lecithin oil, 3 parts of deep-sea fish oil, 0.1 parts of bile salts, 0.5 parts of the composite emulsifier of Preparation Example 1-1, 0.2 parts of the composite antioxidant of Preparation Example 2-1, 0.2 parts of the composite fat-soluble vitamins (containing vitamin A, vitamin D3 and vitamin E, with concentrations of 60000 IU / kg, 12000 IU / kg and 300 mg / kg in the fat powder, respectively), and 50 parts of the composite carrier (the weight ratio of puffed corn flour, puffed coconut flakes and puffed rice flour is 4:3:2).

[0098] The preparation method is as follows:

[0099] 1,3-Dioleoyl-2-palmitoylglycerol, basa fish oil, and soybean lecithin oil were heated to 55°C, then cooled to 40°C, and mixed evenly with rice bran oil and deep-sea fish oil. The mixture was kept at 40°C, and then bile salts, a complex emulsifier, a complex antioxidant, and a complex fat-soluble vitamin were added and thoroughly dissolved and mixed. The temperature was then raised to 50°C, and high-speed shear homogenization emulsification was performed using a high-speed shear homogenizer at 3.0 MPa and 30,000 rpm. Following this, high-pressure homogenization emulsification was performed at 25 MPa and 30,000 rpm using a high-pressure homogenizer. The resulting emulsion (microscopic observation revealed oil droplet diameters between 1-2 μm) was mixed and adsorbed with a complex carrier using a spray mixer at 20 MPa and a spray rate of 25 L / min to produce a solid powder, thus obtaining the fat powder.

[0100] Examples 2-4

[0101] This embodiment provides three types of fat powders. The only difference between these and those in Example 1 is that the composite emulsifier in Preparation Example 1-1 is replaced in equal amounts with the composite emulsifiers in Preparation Examples 1-2, 1-3, and 1-4, respectively. All other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0102] Examples 5-7

[0103] This embodiment provides three types of fat powders. The only difference between these and those in Example 1 is that the composite antioxidant in Preparation Example 2-1 is replaced in equal amounts with the composite antioxidants in Preparation Examples 2-2, 2-3, and 2-4, respectively. All other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0104] Example 8

[0105] This embodiment provides a fat powder whose raw materials differ from those in Example 1 only in that the composite carrier is 50 parts of puffed corn flour, while other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0106] Example 9

[0107] This embodiment provides a fat powder whose raw materials differ from those in Example 1 only in that the composite carrier is 50 parts by weight of puffed corn flour and puffed coconut flakes in a 4:3 ratio; other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0108] Example 10

[0109] This embodiment provides a fat powder whose raw materials differ from those in Example 1 only in that the composite carrier is 50 parts by weight of puffed corn flour and puffed rice flour in a 4:2 ratio; other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0110] Comparative Example 1

[0111] This comparative example provides a fat powder whose raw materials differ from those in Example 1 only in the absence of 1,3-dioleoyl-2-palmitoylglycerol, which is proportionally distributed in the weight distribution of rice bran oil and basa fish oil, while other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0112] Comparative Example 2

[0113] This comparative example provides a fat powder whose raw materials differ from those in Example 1 only in the absence of rice bran oil. The rice bran oil is proportionally distributed by weight among 1,3-dioleoyl-2-palmitoylglycerol and basa fish oil, while other components and their contents remain unchanged. The preparation method is the same as in Example 1.

[0114] Comparative Example 3

[0115] This comparative example provides a fat powder whose preparation materials differ from those in Example 1 only in the absence of basa fish oil, which is proportionally distributed by weight over 1,3-dioleoyl-2-palmitoylglycerol and rice bran oil, while other components and contents remain unchanged. The preparation method is the same as in Example 1.

[0116] Test case

[0117] The experiment employed a single-factor design and lasted 30 days. 140 Duroc-Landrace-Landrace crossbred piglets of similar weight at 35 days of age were randomly divided into 14 groups, with equal numbers of males and females. The control group was fed the original nursery feed, while experimental groups 1-14 were fed their original nursery feed supplemented with 2% of the fat powder prepared in Examples 1-10 and Comparative Examples 1-3 of this invention. The piglets had free access to feed and water. Temperature, humidity, and light in the pigsty were controlled according to standard experimental farm procedures. Disease prevention was carried out according to standard experimental farm procedures. The condition of the piglets was observed and recorded; any diseases were treated promptly and the results were documented. At the start of the experiment, the initial weight of the piglets was measured, and daily feed intake was recorded. At the end of the experiment, the final weight was measured, and the feed conversion ratio was calculated. After slaughter, backfat thickness, body fat percentage, intramuscular fat content, and other indicators were measured. The results are shown in the table below.

[0118]

[0119]

[0120] As can be seen from the data in the table above, the fat powder product involved in this invention has excellent effects in promoting subcutaneous fat deposition, increasing body fat percentage, and improving meat quality in piglets. Furthermore, 1,3-dioleoyl-2-palmitoylglycerol triglyceride, rice bran oil, and basa fish oil have significant synergistic effects in promoting the above-mentioned effects. In addition, the composition of antioxidants, emulsifiers, and carriers also have a certain influence on the above-mentioned effects.

[0121] The applicant declares that the technical solution of this invention is illustrated by the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials for the products of this invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.

[0122] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0123] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A fat powder that promotes rapid weight gain in piglets, characterized in that, The raw materials for preparing the fat powder consist of the following components by weight: 15-25 parts of 1,3-dioleoyl-2-palmitoyl glycerol, 10-15 parts of rice bran oil, 5-10 parts of basa fish oil, 3-6 parts of soybean lecithin oil, 3-6 parts of deep-sea fish oil, 0.1-0.5 parts of bile salts, 0.5-1 part of emulsifier, 0.2-0.8 parts of antioxidant, 0.1-0.5 parts of fat-soluble vitamins, and 40-60 parts of carrier.

2. The fat powder for promoting rapid weight gain in piglets according to claim 1, characterized in that, The raw materials for preparing the emulsifier include sucrose fatty acid esters, lysophosphatidylcholine, modified phospholipids, Tween 80, polyglycerol fatty acid esters, and starch.

3. The fat powder for promoting rapid weight gain in piglets according to claim 2, characterized in that, The raw materials for preparing the emulsifier include, by weight, 10-20 parts of sucrose fatty acid ester, 5-10 parts of lysophosphatidylcholine, 10-15 parts of modified phospholipid, 20-25 parts of Tween 80, 5-7 parts of polyglycerol fatty acid ester, and 23-50 parts of starch.

4. The fat powder for promoting rapid weight gain in piglets according to claim 1, characterized in that, The raw materials for preparing the antioxidant include tea polyphenol palmitate, butylated hydroxytoluene, tert-butylhydroquinone, and a carrier material.

5. The fat powder for promoting rapid weight gain in piglets according to claim 4, characterized in that, The raw materials for preparing the antioxidant include, by weight, 5-15 parts of tea polyphenol palmitate, 4-12 parts of butylated hydroxytoluene, 1-5 parts of tert-butylhydroquinone, and 70-90 parts of carrier material.

6. The fat powder for promoting rapid weight gain in piglets according to claim 1, characterized in that, The fat-soluble vitamins include vitamin A, vitamin D3, and vitamin E.

7. The fat powder for promoting rapid weight gain in piglets according to claim 6, characterized in that, The vitamin A content in the fat powder is 30,000-150,000 IU / kg.

8. The fat powder for promoting rapid weight gain in piglets according to claim 6, characterized in that, The vitamin D3 content in the fat powder is 6000-30000 IU / kg.

9. The fat powder for promoting rapid weight gain in piglets according to claim 6, characterized in that, The vitamin E content in the fat powder is 150-750 mg / kg.

10. The fat powder for promoting rapid weight gain in piglets according to claim 1, characterized in that, The carrier includes any one or a combination of at least two of puffed corn flour, puffed coconut flakes, or puffed rice flour.

11. The fat powder for promoting rapid weight gain in piglets according to claim 10, characterized in that, The carrier includes puffed corn flour, puffed coconut flakes, and puffed rice flour.

12. The fat powder for promoting rapid weight gain in piglets according to claim 11, characterized in that, The carrier comprises, by weight, 30-50 parts puffed corn flour, 20-40 parts puffed coconut flakes, and 20-30 parts puffed rice flour.

13. A method for preparing fat powder for promoting rapid weight gain in piglets according to any one of claims 1-12, characterized in that, The preparation method includes the following steps: (1) Mix 1,3-dioleoyl-2-palmitoylglycerol, rice bran oil, basa fish oil, soybean lecithin oil, deep-sea fish oil, bile salts, emulsifier, antioxidant, and fat-soluble vitamins to obtain a mixture; (2) The mixture is emulsified to obtain an emulsion; (3) The emulsion is adsorbed onto the carrier to obtain a solid powder, namely the fat powder.

14. The method for preparing fat powder for promoting rapid weight gain in piglets according to claim 13, characterized in that, The specific operation of mixing in step (1) is as follows: 1,3-Dioleoyl-2-palmitoylglycerol, rice bran oil, and basa fish oil are first mixed at 45-65°C, then mixed with soybean lecithin oil and deep-sea fish oil at 35-42°C, and then mixed with bile salts, emulsifiers, antioxidants, and fat-soluble vitamins at 35-42°C to obtain a mixture.

15. The method for preparing fat powder for promoting rapid weight gain in piglets according to claim 13, characterized in that, The emulsification process in step (2) is a two-stage emulsification process. The first stage of emulsification is carried out at 2.0-4.0 MPa and 25,000-30,000 rpm, and the second stage of emulsification is carried out at 15-30 MPa and 25,000-30,000 rpm.

16. The method for preparing fat powder for promoting rapid weight gain in piglets according to claim 13, characterized in that, Step (3) The emulsion is mixed and adsorbed with the carrier through a spray mixer at a pressure of 15-20 MPa and a spraying speed of 15-25 L / min.

17. The use of the fat powder that promotes rapid fattening of piglets according to any one of claims 1-12 in the preparation of piglet feed.

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