A fine hair increasing concentrate feed for cashmere goats and a preparation method thereof

Abstract

The application discloses a kind of fine feeding of increasing down of cashmere goat and preparation method thereof, by weight parts, consisting of the following components: 30-40 parts of puffed corn flour, 10-20 parts of puffed soybean, 8-10 parts of fermented wheat bran, 5-8 parts of linseed meal, 8-10 parts of alfalfa grass granules, 3-5 parts of Antarctic krill powder, 4-6 parts of wine yeast culture, 3-5 parts of inorganic salt, 0.01-0.03 parts of nano selenium, 1-3 parts of silkworm chrysalis powder, 3-5 parts of organic nanocrystal active ingredient, 6000-10000 IU / kg of compound vitamin, 0.3-0.6 parts of L-cysteine, 0.1-0.3 parts of gamma-aminobutyric acid, 50-70 mg / kg of nano zinc, 10-20 mg / kg of amino acid chelated copper, 25-40 mg / kg of yeast manganese, 1-2 parts of compound premix.The feed can significantly improve the yield of down and cashmere quality, stability, palatability and digestibility are good.

Description

Technical Field

[0001] This invention relates to the field of animal feed technology, and in particular to a cashmere goat cashmere-enhancing concentrated feed and its preparation method. Background Technology

[0002] With the improvement of people's living standards, the demand for cashmere products is increasing, and high-quality cashmere is in short supply in the market, which places higher demands on the cashmere goat breeding industry. The cashmere yield and quality of cashmere goats are affected by many factors, among which feed nutrition is one of the key factors. Therefore, developing concentrated feed for cashmere goats to increase cashmere production is particularly important.

[0003] Traditional cashmere goat feed mainly consists of natural roughage supplemented with basic nutrients. However, it faces numerous challenges in nutritional regulation, the application of functional components, preparation processes, and quality improvement. Existing cashmere goat feeds also suffer from various technical deficiencies, including nutritional imbalances, high abortion rates due to selenium deficiency, poor cashmere production, and high production costs. In terms of formulation design, commercially available cashmere goat feeds often fail to adequately consider the specific nutritional needs of cashmere goats in intensive or semi-intensive farming environments. They cannot effectively meet the balanced requirements of cashmere goats for energy, protein, minerals, and vitamins in a confined environment, which not only affects the healthy growth of cashmere goats but also indirectly leads to reduced cashmere production. Furthermore, some feeds lack innovation in processing techniques, failing to effectively retain the nutrients in the raw materials and hindering palatability and digestibility, resulting in underutilization of feed resources.

[0004] To address the aforementioned issues, Chinese invention patent application CN1491575A discloses a cashmere goat-enhancing concentrated feed, more specifically, a slow-release feed containing urea and starch. This invention comprises corn, urea, sodium sulfate, sodium formate, sesame seeds, sodium sulfate, bone meal, and oil-soluble vitamins. The advantages of this invention are: while ensuring comprehensive nutrition, it utilizes the physiological characteristics of cashmere goats in synthesizing cystine and methionine, leverages the unique cashmere-promoting substances—active factors—found in sesame cake, and employs the novel chemical additive sodium formate (a cashmere growth promoter) to achieve high cashmere production. Small-scale trials in the Albas White Goat Mountain area of ​​the Yikezhao League showed that each goat produced 400-500 grams of cashmere, 162-236 grams more than cashmere goats under ordinary grazing conditions. However, the sesame seeds in this feed contain a high amount of oil, which is prone to oxidative rancidity during storage, affecting feed quality and palatability, and potentially producing harmful oxidation products that could pose a threat to the health of cashmere goats. Furthermore, urea is prone to deliquescence under high temperature and humidity conditions, which not only affects the physical properties of the feed but may also lead to nitrogen loss, reducing the utilization efficiency of urea as non-protein nitrogen. In addition, the palatability and digestibility of this feed still need further improvement.

[0005] Therefore, developing a cashmere goat cashmere-enhancing concentrated feed that significantly improves cashmere yield and quality while ensuring comprehensive nutrition for cashmere goats, and its preparation method, is of great practical significance and has broad market prospects. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cashmere goat cashmere-enhancing concentrated feed that significantly improves cashmere yield and quality while ensuring comprehensive nutrition for cashmere goats, and has good stability, palatability and digestibility, as well as its preparation method.

[0007] To achieve the above objectives, the technical solution adopted by this invention is as follows: a cashmere goat cashmere-enhancing concentrated feed, which, by weight, consists of the following components: 30-40 parts of extruded corn flour, 10-20 parts of extruded soybeans, 8-10 parts of fermented wheat bran, 5-8 parts of flaxseed meal, 8-10 parts of alfalfa pellets, 3-5 parts of Antarctic krill powder, 4-6 parts of brewer's yeast culture, 3-5 parts of inorganic salts, 0.01-0.03 parts of nano selenium, 1-3 parts of silkworm pupa powder, 3-5 parts of organic nanocrystalline active ingredients, 6000-10000 IU / kg of compound vitamins, 0.3-0.6 parts of L-cysteine, 0.1-0.3 parts of γ-aminobutyric acid, 50-70 mg / kg of nano zinc, 10-20 mg / kg of amino acid chelated copper, 25-40 mg / kg of yeast manganese, and 1-2 parts of compound premix.

[0008] Preferably, the composite premix is ​​ZhengBang 4% sheep premix D304.

[0009] Preferably, the compound vitamin is composed of vitamin A, vitamin D, and vitamin E mixed in a mass ratio of (500-800):(130-200):(3-6).

[0010] Preferably, the preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a polyvinylpyrrolidone ethanol solution with a mass fraction of 4-6%, and stirring to dissolve at a temperature of 35-45℃ and a rotation speed of 450-550 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 0.8-1.2 mL / min, while continuously stirring at a stirring speed of 780-820 r / min during the dropping process; after the dropping is completed, continuing to stir for 25-35 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology.

[0011] Preferably, the active oligosaccharide peptide, the compound plant extract, and the polyvinylpyrrolidone are mixed in a mass ratio of 1:1:(2-3).

[0012] Preferably, the volume ratio of the homogeneous mixed solution to deionized water is 1:(10-20).

[0013] Preferably, the preparation method of the active oligosaccharide peptide includes the following steps: selecting fresh marine shellfish, removing the shells, rinsing three times with deionized water, adding deionized water, and homogenizing at 10000-12000 r / min for 3-5 min using a tissue homogenizer to obtain a shellfish homogenate; selecting a plant protein source, pulverizing it through a 60-100 mesh sieve, adding phosphate buffer solution with pH=7.0, stirring and extracting at 50℃ for 2 h, centrifuging at 4000 r / min for 10-25 min, and collecting the supernatant as the plant protein extract; and combining the shellfish homogenate and the plant protein... The extracts were mixed at a volume ratio of 1:1, and the pH was adjusted to 7.0 to obtain a mixture. Neutral protease was added, and the mixture was enzymatically hydrolyzed at 50°C for 2 hours. The temperature was raised to 90°C to inactivate the enzyme for 10 minutes, then cooled to 55°C, and the pH was adjusted to 6.5. Papain and β-mannanase were added, and the mixture was enzymatically hydrolyzed for another 3 hours. The temperature was raised to 95°C to inactivate the enzyme for 10-15 minutes, and then cooled to room temperature. The supernatant was collected by centrifugation and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. The extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides.

[0014] Preferably, the marine shellfish is at least one of oysters, scallops, and mussels.

[0015] Preferably, the ratio of marine shellfish to deionized water is 1g:3mL.

[0016] Preferably, the plant protein source is at least one of soybean meal, pea protein, and wheat protein.

[0017] Preferably, the ratio of the plant protein source to the phosphate buffer is 1g:10mL.

[0018] Preferably, the ratio of the mixture, neutral protease, papain, and β-mannanase is 100 mL: 0.3 g: 0.2 g: 0.1 g.

[0019] Preferably, the neutral protease has an enzyme activity ≥50000 U / g, the papain has an enzyme activity ≥80000 U / g, and the β-mannanase has an enzyme activity ≥20000 U / g.

[0020] Preferably, the average molecular weight of the active oligosaccharide peptide is 500-1000 Da.

[0021] Preferably, the preparation method of the compound plant extract includes the following steps: using ultrasonic-assisted extraction, adding 10-12 times the weight of ethanol-water mixed solution to the compound plant raw material mixture, extracting 2-3 times at a temperature of 50-60℃ and an ultrasonic power of 400-600W, with each extraction lasting 30-40 minutes, combining the extracts, concentrating and drying under reduced pressure to obtain the compound plant extract.

[0022] Preferably, the compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:(0.8-1.2):(1-2):1.

[0023] Preferably, the volume fraction of ethanol in the ethanol-water mixture is 60%.

[0024] Preferably, the inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of (1-2):(1-2):(0.8-1.2):(0.3-0.5).

[0025] Another objective of this invention is to provide a method for preparing the cashmere goat cashmere-enhancing concentrated feed, comprising the following steps: mixing each component evenly according to weight parts to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 75-85℃, and the ring die compression ratio at 1:(8-10) to produce pellet feed with a particle size of 3-4mm; after the pellet feed cools, using a post-spraying process, spraying soybean oil onto the surface of the pellets, then subjecting them to secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing them.

[0026] Preferably, the amount of soybean oil sprayed is 1-2% of the weight of the pelleted feed.

[0027] Due to the application of the above technical solution, the present invention has the following beneficial effects:

[0028] (1) The method for preparing cashmere goat cashmere-enhancing concentrated feed disclosed in this invention is simple and easy to implement, has low equipment dependence, high preparation efficiency and high finished product qualification rate, is suitable for continuous large-scale production, and has high promotion and application value.

[0029] (2) The cashmere goat cashmere-enhancing concentrated feed disclosed in this invention is composed of the following components by weight: 30-40 parts of puffed corn flour, 10-20 parts of puffed soybean, 8-10 parts of fermented wheat bran, 5-8 parts of flaxseed meal, 8-10 parts of alfalfa pellets, 3-5 parts of Antarctic krill powder, 4-6 parts of brewer's yeast culture, 3-5 parts of inorganic salts, 0.01-0.03 parts of nano selenium, 1-3 parts of silkworm pupa powder, 3-5 parts of organic nanocrystalline active ingredients, 6000-10000 IU / kg of compound vitamins, 0.3-0.6 parts of L-cysteine, 0.1-0.3 parts of γ-aminobutyric acid, 50-70 mg / kg of nano zinc, 10-20 mg / kg of amino acid chelated copper, 25-40 mg / kg of yeast manganese, and 1-2 parts of compound premix. Through the synergistic effect of the various components, the feed product significantly improves cashmere yield and quality while ensuring the comprehensive nutrition of cashmere goats, and offers advantages such as good stability, palatability, and digestibility.

[0030] (3) The cashmere goat-enhancing concentrated feed disclosed in this invention has organic nanocrystalline active ingredients with higher bioavailability due to their nanoscale particle size and unique structure, enabling rapid and efficient absorption by cashmere goats. After being processed into organic nanocrystalline forms, the active oligosaccharide peptides can act more precisely on hair follicle cells, greatly promoting cell proliferation and differentiation. The organic nanocrystalline form of the compound plant extracts can better regulate metabolism and resist stress, creating an ideal internal environment for cashmere growth. Combined with trace elements such as nano-zinc, chelated copper, yeast manganese, and nano-selenium, these effectively participate in cashmere-related enzymatic reactions, protecting hair follicle cells. Cashmere goats using this feed show a significant increase in cashmere production, far exceeding the improvement levels of traditional feeds.

[0031] (4) The cashmere goat enrichment feed disclosed in this invention uses Antarctic krill powder and silkworm pupa powder as high-quality protein sources, combined with extruded soybeans. Antarctic krill powder is rich in phospholipids, astaxanthin and other active substances, which can enhance the immunity of cashmere goats and improve intestinal health; silkworm pupa powder contains a variety of essential amino acids, especially rich in cystine, which provides key raw materials for the synthesis of cashmere keratin. The three work synergistically to ensure protein supply and promote hair follicle development through active ingredients, which is significantly different from the traditional single protein source model of feed. Flaxseed meal and brewer's yeast culture are added. Flaxseed meal is rich in α-linolenic acid, which can be converted into unsaturated fatty acids in cashmere goats, improving the structure of cashmere fibers and making them softer and smoother; brewer's yeast culture is rich in β-glucan, mannan oligosaccharides, etc., which can regulate intestinal flora and improve feed digestibility. Novel trace element forms such as nano selenium, nano zinc, amino acid chelated copper, and yeast manganese are used. Nano-selenium has stronger antioxidant properties and can effectively scavenge free radicals and protect hair follicle cells; compared with traditional inorganic salt forms, nano-zinc, amino acid chelated copper, and yeast manganese have high stability and good bioavailability, and can efficiently participate in enzymatic reactions related to cashmere production in cashmere goats.

[0032] (5) The cashmere goat-enhancing concentrated feed disclosed in this invention has a formula that comprehensively considers the nutritional needs of cashmere goats during the cashmere production period. L-cysteine, γ-aminobutyric acid (GABA), and compound vitamins work synergistically. L-cysteine ​​participates in keratin synthesis, GABA regulates the physiological function of hair follicle cells, and compound vitamins maintain normal metabolism, together providing precise nutrition for cashmere growth and meeting the dynamic nutritional needs during the critical cashmere production period, overcoming the limitations of imprecise nutrient supply in traditional feeds. Fermented wheat bran and alfalfa pellets provide dietary fiber, promoting intestinal peristalsis; compound premixes supplement various trace elements and vitamins; and inorganic salts maintain the body's electrolyte balance. These components, combined with characteristic protein sources and active ingredients, not only improve cashmere yield and quality but also enhance the cashmere goat's immunity, improve feed utilization, and extend feed shelf life, achieving synergistic effects across multiple functions. The inorganic salts contain sodium formate, which activates the β-catenin pathway in hair follicle cells and accelerates the deposition of villous keratin. The flaxseed meal contains flaxseed active factors (lignans), which upregulate IGF-1 expression. The two work together to prolong the hair follicle growth phase.

[0033] (6) The cashmere goat enrichment feed disclosed in this invention is composed of a mixture of Gynostemma pentaphyllum, Acanthopanax senticosus, rosemary, sea buckthorn, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:(0.8-1.2):(1-2):1. Gynostemma pentaphyllum contains various saponins, which can regulate the metabolism of cashmere goats and enhance immunity; Acanthopanax senticosus has anti-stress effects, helping cashmere goats maintain a good physiological state when the environment changes (such as temperature fluctuations or feed changes); Angelica sinensis, Rehmannia glutinosa, and Polygonum multiflorum nourish and invigorate blood, providing sufficient qi and blood for hair follicle development and cashmere growth, improving blood circulation, and ensuring that nutrients are effectively transported to the hair follicles; Astragalus membranaceus tonifies qi and raises yang, further enhancing the body's immunity, and working synergistically with Gynostemma pentaphyllum to improve the overall disease resistance of cashmere goats. Rosemary and sea buckthorn are rich in antioxidants, such as polyphenols and flavonoids, which can effectively scavenge free radicals in cashmere goats, protect hair follicle cells from oxidative damage, and maintain normal cellular physiological functions. Sophora flavescens and licorice contain alkaloids, flavonoids, and other active ingredients with anti-inflammatory properties, which can reduce inflammation in the intestines and hair follicles, creating a healthy environment for cashmere growth and avoiding the negative impact of inflammation on cashmere quality and yield. The formula contains multiple plant ingredients that promote cashmere growth from different angles. Angelica sinensis, Rehmannia glutinosa, and Polygonum multiflorum, among other blood-nourishing and blood-activating ingredients, directly provide nutritional support to hair follicles and promote hair follicle cell proliferation; Gynostemma pentaphyllum regulates metabolism, ensuring that nutrients are rationally distributed during cashmere growth; Astragalus membranaceus enhances immunity and reduces the interference of diseases on cashmere growth; and antioxidant and anti-inflammatory components ensure that hair follicle cells are in good condition, enabling cashmere fibers to synthesize and grow normally, thereby increasing cashmere yield and improving cashmere quality. This formula is not simply a collection of plant ingredients, but a scientifically proportioned blend based on the characteristics and effects of each ingredient. For example, the blood-nourishing and blood-activating effects of Angelica sinensis, Rehmannia glutinosa, and Polygonum multiflorum work synergistically with the metabolic regulation effect of Gynostemma pentaphyllum, allowing nutrients to be delivered more precisely to the hair follicles; the immune-enhancing effect of Astragalus membranaceus works in conjunction with the anti-inflammatory effects of Sophora flavescens and Glycyrrhiza uralensis, providing dual protection for the healthy growth of cashmere goats. These components interact within the body, forming an organic whole that exerts a stronger effect than any single component, achieving a comprehensive improvement in the growth and cashmere production performance of cashmere goats. Detailed Implementation

[0034] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0035] The polyvinylpyrrolidone used in the various embodiments of the present invention is PVP-K30.

[0036] Example 1

[0037] A cashmere goat cashmere-enhancing concentrated feed, by weight, comprises the following components: 30 parts extruded corn flour, 10 parts extruded soybean, 8 parts fermented wheat bran, 5 parts flaxseed meal, 8 parts alfalfa pellets, 3 parts Antarctic krill powder, 4 parts brewer's yeast culture, 3 parts inorganic salts, 0.01 parts nano selenium, 1 part silkworm pupa powder, 3 parts organic nanocrystalline active ingredients, 6000 IU / kg of compound vitamins, 0.3 parts L-cysteine, 0.1 parts γ-aminobutyric acid, 50 mg / kg nano zinc, 10 mg / kg amino acid chelated copper, 25 mg / kg yeast manganese, and 1 part compound premix; wherein the compound premix is ​​ZhengBang 4% sheep premix D304; and the compound vitamins are vitamin A, vitamin D, and vitamin E mixed in a mass ratio of 500:130:3.

[0038] The preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a 4% (w / w) polyvinylpyrrolidone ethanol solution, stirring and dissolving at 35°C and 450 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 0.8 mL / min, while continuously stirring at a stirring speed of 780 r / min; after the addition is complete, stirring is continued for 25 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:2; the volume ratio of the homogeneous mixed solution to deionized water is 1:10.

[0039] The preparation method of the active oligosaccharide peptide includes the following steps: Select fresh marine shellfish, remove the shells, rinse three times with deionized water, add deionized water, and homogenize at 10000 r / min for 3 min using a tissue homogenizer to obtain a shellfish homogenate; Select a plant protein source, pulverize it through a 60-mesh sieve, add phosphate buffer solution with pH=7.0, stir and extract at 50℃ for 2 h, centrifuge at 4000 r / min for 10 min, and collect the supernatant as the plant protein extract; Mix the shellfish homogenate and the plant protein extract at a volume ratio of 1:1, adjust the pH to 7.0 to obtain a mixture; Add neutral protease, and enzymatically hydrolyze at 50℃ for 2 h; Heat to 90℃ to inactivate the enzyme for 10 min, cool to 55℃, adjust the pH to 6.5, add papain and β-mannanase, and continue enzymatic hydrolysis for 3 h; Heat to 95℃ to inactivate the enzyme for 10 min. After cooling to room temperature, the supernatant was collected by centrifugation and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. This extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides. The marine shellfish was oyster; the ratio of marine shellfish to deionized water was 1 g:3 mL; the plant protein source was soybean meal; the ratio of plant protein source to phosphate buffer was 1 g:10 mL; the ratio of the mixture, neutral protease, papain, and β-mannanase was 100 mL:0.3 g:0.2 g:0.1 g; the neutral protease activity was ≥50000 U / g, the papain activity was ≥80000 U / g, and the β-mannanase activity was ≥20000 U / g; the average molecular weight of the active oligosaccharide peptides was 800 Da.

[0040] The preparation method of the compound plant extract includes the following steps: Ultrasonic-assisted extraction is used, adding 10 times the weight of an ethanol-water mixture to the compound plant raw material mixture, extracting twice at 50℃ and 400W ultrasonic power, each extraction lasting 30 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:0.8:1:1. The volume fraction of ethanol in the ethanol-water mixture is 60%.

[0041] The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of 1:1:0.8:0.3.

[0042] A method for preparing cashmere goat cashmere-enhancing concentrated feed includes the following steps: mixing the components evenly according to their weight proportions to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 75℃, and the ring die compression ratio at 1:10 to produce pellet feed with a particle size of 3mm; after the pellet feed cools, using a post-coating process, spraying soybean oil onto the surface of the pellets, followed by secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing; the amount of soybean oil sprayed is 1% of the weight of the pellet feed.

[0043] Example 2

[0044] A cashmere goat cashmere-enhancing concentrated feed, by weight, comprises the following components: 33 parts extruded corn flour, 12 parts extruded soybean, 8.5 parts fermented wheat bran, 6 parts flaxseed meal, 8.5 parts alfalfa pellets, 3.5 parts Antarctic krill powder, 4.5 parts brewer's yeast culture, 3.5 parts inorganic salts, 0.015 parts nano selenium, 1.5 parts silkworm pupa powder, 3.5 parts organic nanocrystalline active ingredients, 7000 IU / kg of compound vitamins, 0.4 parts L-cysteine, 0.15 parts γ-aminobutyric acid, 55 mg / kg of nano zinc, 13 mg / kg of amino acid chelated copper, 28 mg / kg of yeast manganese, and 1.2 parts of compound premix; wherein the compound premix is ​​ZhengBang 4% sheep premix D304; and the compound vitamins are vitamin A, vitamin D, and vitamin E mixed in a mass ratio of 600:150:4.

[0045] The preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a 4.5% (w / w) polyvinylpyrrolidone ethanol solution, stirring and dissolving at 37°C and 470 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 0.9 mL / min, while continuously stirring at a stirring speed of 790 r / min; after the addition is complete, stirring is continued for 28 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:2.3; the volume ratio of the homogeneous mixed solution to deionized water is 1:12.

[0046] The preparation method of the active oligosaccharide peptide includes the following steps: Select fresh marine shellfish, remove the shells, rinse three times with deionized water, add deionized water, and homogenize at 10500 r / min for 3.5 min using a tissue homogenizer to obtain a shellfish homogenate; Select a plant protein source, pulverize it through a 70-mesh sieve, add phosphate buffer solution with pH=7.0, stir and extract at 50℃ for 2 h, centrifuge at 4000 r / min for 15 min, and collect the supernatant as the plant protein extract; Mix the shellfish homogenate and the plant protein extract at a volume ratio of 1:1, adjust the pH to 7.0 to obtain a mixture; Add neutral protease and enzymatically hydrolyze at 50℃ for 2 h; Heat to 90℃ to inactivate the enzyme for 10 min, cool to 55℃, adjust the pH to 6.5, add papain and β-mannanase, and continue enzymatic hydrolysis for 3 h. The enzyme was inactivated by heating to 95℃ for 12 min, cooled to room temperature, centrifuged, and the supernatant was collected and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. This extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides. The marine shellfish was scallop. The ratio of marine shellfish to deionized water was 1 g:3 mL. The plant protein source was pea protein. The ratio of plant protein source to phosphate buffer was 1 g:10 mL. The ratio of the mixture, neutral protease, papain, and β-mannanase was 100 mL:0.3 g:0.2 g:0.1 g. The neutral protease activity was ≥50000 U / g, the papain activity was ≥80000 U / g, and the β-mannanase activity was ≥20000 U / g.

[0047] The preparation method of the compound plant extract includes the following steps: Ultrasonic-assisted extraction is used, adding 10.5 times the weight of an ethanol-water mixture to the compound plant raw material mixture, extracting twice at 53℃ and 450W ultrasonic power, each extraction lasting 33 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:0.9:1.3:1. The volume fraction of ethanol in the ethanol-water mixture is 60%.

[0048] The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of 1.3:1.2:0.9:0.35.

[0049] A method for preparing cashmere goat cashmere-enhancing concentrated feed includes the following steps: mixing the components evenly according to their weight proportions to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 78℃, and the ring die compression ratio at 1:9.5 to produce pellet feed with a particle size of 3.3mm; after the pellet feed cools, using a post-coating process, spraying soybean oil onto the surface of the pellets, followed by secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing; the amount of soybean oil sprayed is 1.2% of the weight of the pellet feed.

[0050] Example 3

[0051] A cashmere goat cashmere-enhancing concentrated feed, by weight, comprises the following components: 35 parts extruded corn flour, 15 parts extruded soybean, 9 parts fermented wheat bran, 6.5 parts flaxseed meal, 9 parts alfalfa pellets, 4 parts Antarctic krill powder, 5 parts brewer's yeast culture, 4 parts inorganic salts, 0.02 parts nano selenium, 2 parts silkworm pupa powder, 4 parts organic nanocrystalline active ingredients, 8000 IU / kg of compound vitamins, 0.45 parts L-cysteine, 0.2 parts γ-aminobutyric acid, 60 mg / kg nano zinc, 15 mg / kg amino acid chelated copper, 30 mg / kg yeast manganese, and 1.5 parts compound premix; wherein the compound premix is ​​ZhengBang 4% sheep premix D304; and the compound vitamins are vitamin A, vitamin D, and vitamin E mixed in a mass ratio of 650:160:4.5.

[0052] The preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a 5% (w / w) polyvinylpyrrolidone ethanol solution, stirring and dissolving at 40°C and 500 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 1 mL / min, while continuously stirring at 800 r / min; after the addition is complete, stirring is continued for 30 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:2.5; the volume ratio of the homogeneous mixed solution to deionized water is 1:15.

[0053] The preparation method of the active oligosaccharide peptide includes the following steps: Select fresh marine shellfish, remove the shells, rinse three times with deionized water, add deionized water, homogenize at 11000 r / min for 4 min using a tissue homogenizer to obtain shellfish homogenate; select plant protein source, pulverize through an 80-mesh sieve, add phosphate buffer solution with pH=7.0, stir and extract at 50℃ for 2 h, centrifuge at 4000 r / min for 19 min, and collect the supernatant as plant protein extract; mix shellfish homogenate and plant protein extract at a volume ratio of 1:1, adjust pH to 7.0 to obtain a mixture; add neutral protease, enzymatically hydrolyze at 50℃ for 2 h; heat to 90℃ to inactivate enzyme for 10 min, cool to 55℃, adjust pH to 6.5, add papain and β-mannanase, and continue enzymatic hydrolysis for 3 h; The enzyme was inactivated by heating to 95℃ for 13 min, cooled to room temperature, centrifuged, and the supernatant was collected and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. This extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides. The marine shellfish used was mussels. The ratio of marine shellfish to deionized water was 1 g:3 mL. The plant protein source was wheat protein. The ratio of plant protein source to phosphate buffer was 1 g:10 mL. The ratio of the mixture, neutral protease, papain, and β-mannanase was 100 mL:0.3 g:0.2 g:0.1 g. The neutral protease activity was ≥50000 U / g, the papain activity was ≥80000 U / g, and the β-mannanase activity was ≥20000 U / g.

[0054] The preparation method of the compound plant extract includes the following steps: Ultrasonic-assisted extraction is used, adding 11 times the weight of an ethanol-water mixture to the compound plant raw material mixture, extracting three times at 55℃ and 500W ultrasonic power, each extraction lasting 35 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:1:1.5:1. The volume fraction of ethanol in the ethanol-water mixture is 60%.

[0055] The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of 1.5:1.5:1:0.4.

[0056] A method for preparing cashmere goat cashmere-enhancing concentrated feed includes the following steps: mixing the components evenly according to their weight proportions to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 80℃, and the ring die compression ratio at 1:9 to produce pellet feed with a particle size of 3.5mm; after the pellet feed cools, using a post-coating process, spraying soybean oil onto the surface of the pellets, followed by secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing; the amount of soybean oil sprayed is 1.5% of the weight of the pellet feed.

[0057] Example 4

[0058] A cashmere goat cashmere-enhancing concentrated feed, by weight, comprises the following components: 38 parts extruded corn flour, 18 parts extruded soybean, 9.5 parts fermented wheat bran, 7.5 parts flaxseed meal, 9.5 parts alfalfa pellets, 4.5 parts Antarctic krill powder, 5.5 parts brewer's yeast culture, 4.5 parts inorganic salts, 0.025 parts nano selenium, 2.5 parts silkworm pupa powder, 4.5 parts organic nanocrystalline active ingredients, 9000 IU / kg of compound vitamins, 0.55 parts L-cysteine, 0.25 parts γ-aminobutyric acid, 65 mg / kg of nano zinc, 18 mg / kg of amino acid chelated copper, 38 mg / kg of yeast manganese, and 1.8 parts of compound premix; wherein the compound premix is ​​ZhengBang 4% sheep premix D304; and the compound vitamins are vitamin A, vitamin D, and vitamin E mixed in a mass ratio of 750:190:5.5.

[0059] The preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a 5.5% (w / w) polyvinylpyrrolidone ethanol solution, stirring and dissolving at 43°C and 540 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 1.1 mL / min, while continuously stirring at 810 r / min; after the addition is complete, stirring is continued for 33 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:2.8; the volume ratio of the homogeneous mixed solution to deionized water is 1:18.

[0060] The preparation method of the active oligosaccharide peptide includes the following steps: Fresh marine shellfish are selected, shelled, and rinsed three times with deionized water. Deionized water is added, and the mixture is homogenized at 11500 r / min for 4.5 min using a tissue homogenizer to obtain a shellfish homogenate. A plant protein source is selected, pulverized through a 90-mesh sieve, and phosphate buffer (pH 7.0) is added. Extraction is carried out at 50℃ with stirring for 2 h, followed by centrifugation at 4000 r / min for 23 min. The supernatant is collected as the plant protein extract. The shellfish homogenate and plant protein extract are mixed at a volume ratio of 1:1, and the pH is adjusted to 7.0 to obtain a mixture. Neutral protease is added, and enzymatic hydrolysis is performed at 50℃ for 2 h. The temperature is raised to 90℃ to inactivate the enzyme for 10 min, cooled to 55℃, and the pH is adjusted to 6.5. Papain and β-mannanase are added, and enzymatic hydrolysis continues for 3 h. The temperature is raised to 95℃ to inactivate the enzyme for 14 min, and cooled to room temperature. The supernatant was collected by centrifugation and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. This extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides. The marine shellfish consisted of oysters, scallops, and mussels in a mass ratio of 1:2:1. The ratio of marine shellfish to deionized water was 1 g:3 mL. The plant protein source consisted of soybean meal, pea protein, and wheat protein in a mass ratio of 1:2:3. The ratio of plant protein source to phosphate buffer was 1 g:10 mL. The ratio of the mixture, neutral protease, papain, and β-mannanase was 100 mL:0.3 g:0.2 g:0.1 g. The neutral protease activity was ≥50000 U / g, the papain activity was ≥80000 U / g, and the β-mannanase activity was ≥20000 U / g.

[0061] The preparation method of the compound plant extract includes the following steps: Ultrasonic-assisted extraction is used, adding 11.5 times the weight of an ethanol-water mixture to the compound plant raw material mixture, extracting three times at 58℃ and 550W ultrasonic power, each extraction lasting 38 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:1.1:1.9:1. The volume fraction of ethanol in the ethanol-water mixture is 60%.

[0062] The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of 1.8:2:1.1:0.45.

[0063] A method for preparing cashmere goat cashmere-enhancing concentrated feed includes the following steps: mixing each component evenly according to weight parts to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 83℃, and the ring die compression ratio at 1:8.5 to produce pellet feed with a particle size of 3.8mm; after the pellet feed cools, using a post-coating process, spraying soybean oil onto the surface of the pellets, followed by secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing; the amount of soybean oil sprayed is 1.8% of the weight of the pellet feed.

[0064] Example 5

[0065] A cashmere goat cashmere-enhancing concentrated feed, by weight, comprises the following components: 40 parts extruded corn flour, 20 parts extruded soybean, 10 parts fermented wheat bran, 8 parts flaxseed meal, 10 parts alfalfa pellets, 5 parts Antarctic krill powder, 6 parts brewer's yeast culture, 5 parts inorganic salts, 0.03 parts nano selenium, 3 parts silkworm pupa powder, 5 parts organic nanocrystalline active ingredients, 10000 IU / kg compound vitamins, 0.6 parts L-cysteine, 0.3 parts γ-aminobutyric acid, 70 mg / kg nano zinc, 20 mg / kg amino acid chelated copper, 40 mg / kg yeast manganese, and 2 parts compound premix; wherein the compound premix is ​​ZhengBang 4% sheep premix D304; and the compound vitamins are vitamin A, vitamin D, and vitamin E mixed in a mass ratio of 800:200:6.

[0066] The preparation method of the organic nanocrystalline active ingredient includes the following steps: adding active oligosaccharide peptides and compound plant extracts to a 6% (w / w) polyvinylpyrrolidone ethanol solution, stirring and dissolving at 45°C and 550 r / min to form a homogeneous mixed solution; then slowly adding the solution dropwise to deionized water at a dropping rate of 1.2 mL / min, while continuously stirring at 820 r / min; after the addition is complete, stirring is continued for 35 min to obtain an organic nanocrystalline suspension, and finally drying the suspension into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:3; the volume ratio of the homogeneous mixed solution to deionized water is 1:20.

[0067] The preparation method of the active oligosaccharide peptide includes the following steps: Select fresh marine shellfish, remove the shells, rinse three times with deionized water, add deionized water, and homogenize at 12000 r / min for 5 min using a tissue homogenizer to obtain a shellfish homogenate; Select a plant protein source, pulverize it through a 100-mesh sieve, add phosphate buffer solution with pH=7.0, stir and extract at 50℃ for 2 h, centrifuge at 4000 r / min for 25 min, and collect the supernatant as the plant protein extract; Mix the shellfish homogenate and the plant protein extract at a volume ratio of 1:1, adjust the pH to 7.0 to obtain a mixture; Add neutral protease and enzymatically hydrolyze at 50℃ for 2 h; Heat to 90℃ to inactivate the enzyme for 10 min, cool to 55℃, adjust the pH to 6.5, add papain and β-mannanase, and continue enzymatic hydrolysis for 3 h. The enzyme was inactivated by heating to 95℃ for 15 min, cooled to room temperature, centrifuged, and the supernatant was collected and filtered through a 0.45 μm microporous membrane to obtain a crude oligosaccharide peptide extract. This extract was then subjected to ultrafiltration, nanofiltration, ion exchange, concentration, and freeze-drying to obtain active oligosaccharide peptides. The marine shellfish was oyster; the ratio of marine shellfish to deionized water was 1 g:3 mL; the plant protein source was soybean meal; the ratio of plant protein source to phosphate buffer was 1 g:10 mL; the ratio of the mixture, neutral protease, papain, and β-mannanase was 100 mL:0.3 g:0.2 g:0.1 g; the neutral protease activity was ≥50000 U / g, the papain activity was ≥80000 U / g, and the β-mannanase activity was ≥20000 U / g.

[0068] The preparation method of the compound plant extract includes the following steps: Ultrasonic-assisted extraction is used, adding 12 times the weight of an ethanol-water mixture to the compound plant raw material mixture, extracting three times at 60℃ and 600W ultrasonic power, each extraction lasting 40 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:1.2:2:1. The volume fraction of ethanol in the ethanol-water mixture is 60%.

[0069] The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and table salt in a mass ratio of 2:2:1.2:0.5.

[0070] A method for preparing cashmere goat cashmere-enhancing concentrated feed includes the following steps: mixing the components evenly according to their weight proportions to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting, controlling the pelleting temperature at 85℃, and the ring die compression ratio at 1:8 to produce pellet feed with a particle size of 4mm; after the pellet feed cools, using a post-coating process, spraying soybean oil onto the surface of the pellets, followed by secondary cooling to solidify the oil on the surface of the pellets, and finally packaging and storing; the amount of soybean oil sprayed is 2% of the weight of the pellet feed.

[0071] Comparative Example 1

[0072] This example provides a cashmere goat cashmere-enhancing concentrated feed and its preparation method, which is basically the same as Example 1, except that an equal amount of compound plant extract is used to replace the organic nanocrystalline active ingredients.

[0073] Comparative Example 2

[0074] This example provides a cashmere goat cashmere-enhancing concentrated feed and its preparation method, which is basically the same as Example 1, except that an equal amount of alfalfa pellets is used instead of silkworm pupa powder, and an equal amount of flaxseed meal is used instead of brewer's yeast culture.

[0075] To further illustrate the beneficial technical effects of the cashmere goat enrichment feeds involved in the various embodiments of the present invention, relevant performance tests were conducted on the cashmere goat enrichment feeds involved in each example. The test results are shown in Table 1, and the test methods are as follows:

[0076] Experimental animal grouping: 700 cashmere goats (350 rams and 350 ewes) with good health, similar weight (30±2kg) and the same age (12 months) were selected and randomly divided into 7 groups of 100 animals each, with 50 rams and 50 ewes in each group. They were fed the concentrated feed of Examples 1-5 and Comparative Examples 1-2 of this invention, respectively.

[0077] Feeding: The feeding amount was determined according to the cashmere goats' weight and growth stage, following standard feeding practices. The experimental period was 8 months. Specific feeding amounts are as follows:

[0078] During the 12-16 month period (4 months before the experiment), when the weight is 30-35kg, the daily feed amount per animal is 2.0kg.

[0079] During the 17-20 month age stage (4 months after the experiment, the critical period for down production), when the weight is 35-40kg, the daily feed amount per animal is 2.3kg.

[0080] Data collection: At the beginning and end of the experiment, the weight of each group of cashmere goats was weighed and recorded; after the experiment, cashmere samples were collected from each group of cashmere goats to determine the average cashmere yield, average strength, and other indicators; at the same time, the cashmere goats' feed intake, health status, and morbidity were recorded weekly; the microbial content and nutrient composition changes in feed samples were tested regularly to assess the shelf life of the feed.

[0081] Table 1. Performance Test Results of Cashmere Goat Cashmere-Enhancing Concentrated Feed

[0082]

[0083] As can be seen from Table 1, the cashmere goat cashmere-enhancing concentrated feeds involved in the embodiments of the present invention have higher cashmere yield and shelf life than the comparative products, better cashmere quality, and lower disease incidence in cashmere goats using the feed. The combined use of organic nanocrystalline active ingredients, alfalfa pellets, Antarctic krill powder, flaxseed meal and brewer's yeast culture is beneficial to improving the above performance.

[0084] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A concentrated feed for cashmere goats to increase cashmere production, characterized in that, By weight, it consists of the following components: 30-40 parts puffed corn flour, 10-20 parts puffed soybeans, 8-10 parts fermented wheat bran, 5-8 parts flaxseed meal, 8-10 parts alfalfa pellets, 3-5 parts Antarctic krill powder, 4-6 parts brewer's yeast culture, 3-5 parts inorganic salts, 0.01-0.03 parts nano selenium, 1-3 parts silkworm pupa powder, 3-5 parts organic nanocrystalline active ingredients, 6000-10000 IU / kg compound vitamins, 0.3-0.6 parts L-cysteine, 0.1-0.3 parts γ-aminobutyric acid, 50-70 mg / kg nano zinc, 10-20 mg / kg amino acid chelated copper, 25-40 mg / kg yeast manganese, and 1-2 parts compound premix. The preparation method of the organic nanocrystalline active ingredient includes the following steps: Active oligosaccharide peptides and compound plant extracts are added to a 4-6% (w / w) polyvinylpyrrolidone ethanol solution, and stirred at 35-45℃ and 450-550 r / min to form a homogeneous mixed solution; then the solution is slowly added dropwise to deionized water at a rate of 0.8-1.2 mL / min, with continuous stirring at 780-820 r / min during the addition; after the addition is complete, stirring is continued for 25-35 min to obtain an organic nanocrystalline suspension; finally, the suspension is dried into powdered organic nanocrystalline active ingredient using freeze-drying technology; the mass ratio of the active oligosaccharide peptides, compound plant extracts, and polyvinylpyrrolidone is 1:1:(2-3); the volume ratio of the homogeneous mixed solution to deionized water is 1:(10-20). The preparation method of the active oligosaccharide peptide includes the following steps: Selecting fresh marine shellfish, removing the shells, rinsing three times with deionized water, adding deionized water, and homogenizing at 10000-12000 r / min for 3-5 min using a tissue homogenizer to obtain a shellfish homogenate; selecting a plant protein source, pulverizing it through a 60-100 mesh sieve, adding phosphate buffer solution at pH=7.0, stirring and extracting at 50℃ for 2 h, centrifuging at 4000 r / min for 10-25 min, and collecting the supernatant as the plant protein extract; combining the shellfish homogenate and the plant protein extract... The liquid was mixed at a volume ratio of 1:1, and the pH was adjusted to 7.0 to obtain a mixed solution. Neutral protease was added, and enzymatic hydrolysis was carried out at 50℃ for 2 hours. The temperature was raised to 90℃ to inactivate the enzyme for 10 minutes, cooled to 55℃, and the pH was adjusted to 6.

5. Papain and β-mannanase were added, and enzymatic hydrolysis was continued for 3 hours. The temperature was raised to 95℃ to inactivate the enzyme for 10-15 minutes, cooled to room temperature, and the supernatant was collected by centrifugation and filtered through a 0.45μm microporous membrane to obtain a crude oligosaccharide peptide extract. Then, ultrafiltration, nanofiltration, ion exchange, concentration, and freeze drying were performed sequentially to obtain active oligosaccharide peptides. The preparation method of the compound plant extract includes the following steps: using ultrasonic-assisted extraction, 10-12 times the weight of an ethanol-water mixture is added to the compound plant raw material mixture. Extraction is performed 2-3 times at a temperature of 50-60℃ and an ultrasonic power of 400-600W, with each extraction lasting 30-40 minutes. The extracts are combined, concentrated under reduced pressure, and dried to obtain the compound plant extract. The compound plant raw material mixture is composed of Gynostemma pentaphyllum, Acanthopanax senticosus, Rosemary, Hippophae rhamnoides, Angelica sinensis, Rehmannia glutinosa, Polygonum multiflorum, Sophora flavescens, Glycyrrhiza uralensis, and Astragalus membranaceus in a mass ratio of 2:3:1:1:0.8:0.5:1:(0.8-1.2):(1-2):

1. The volume fraction of ethanol in the ethanol-water mixture is 60%. The compound premix is ​​ZhengBang 4% sheep premix D304; the compound vitamin is vitamin A, vitamin D and vitamin E mixed in a mass ratio of (500-800):(130-200):(3-6).

2. The cashmere goat enrichment feed according to claim 1, characterized in that, The marine shellfish is at least one of oysters, scallops, and mussels; the ratio of the marine shellfish to deionized water is 1g:3mL; the plant protein source is at least one of soybean meal, pea protein, and wheat protein; the ratio of the plant protein source to phosphate buffer is 1g:10mL.

3. The cashmere goat enrichment feed according to claim 1, characterized in that, The ratio of the mixture, neutral protease, papain, and β-mannanase is 100 mL: 0.3 g: 0.2 g: 0.1 g; the neutral protease has an enzyme activity ≥ 50000 U / g, the papain has an enzyme activity ≥ 80000 U / g, and the β-mannanase has an enzyme activity ≥ 20000 U / g; the average molecular weight of the active oligosaccharide peptide is 500-1000 Da.

4. The cashmere goat enrichment feed according to claim 1, characterized in that, The inorganic salt is a mixture of sodium formate, calcium hydrogen phosphate, calcium carbonate, and salt in a mass ratio of (1-2):(1-2):(0.8-1.2):(0.3-0.5).

5. A method for preparing cashmere goat enriched feed according to any one of claims 1-4, characterized in that, The process includes the following steps: Mixing each component evenly according to its weight proportions to obtain a mixture; feeding the evenly mixed material into a ring die pellet mill for pelleting; controlling the pelleting temperature at 75-85℃; setting the ring die compression ratio at 1:(8-10); producing pellets with a diameter of 3-4mm; after cooling the pellets, applying soybean oil to the surface using a post-coating process; followed by secondary cooling to solidify the oil on the pellet surface; and finally packaging and storing the pellets; the amount of soybean oil applied is 1-2% of the weight of the pellets.

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