Compound feed additive for laying hens for producing low-residue and high-nutrition red date eggs and preparation method of compound feed additive

Abstract

The invention relates to the technical field of feed additives, and provides a feed additive which is composed of an organic trace element group, a medicinal and edible plant group, a functional nutrition group and a compound vitamin group according to specific parts by weight, wherein the organic trace element group comprises 550-650 g of organic selenium, 250-350 g of zinc methionine and 150-250 g of glycine iron; the medicinal and edible plant group comprises 35-45 kg of astragalus membranaceus powder, 25-35 kg of Chinese wolfberry fruit powder and 20-30 kg of Chinese yam powder; and the functional nutrition group comprises 45-65kg of spirulina powder of 100-200 meshes and 1.0-1.5 kg of soybean lecithin with the phosphatidylcholine content of more than or equal to 20%. Medicinal and edible plants and organic trace elements are combined, risk raw materials such as inorganic selenium are abandoned, and scientific synergistic matching is combined, so that the selenium content and the calcium content of egg products are stably increased, heavy metal and antibiotic residues are not detected, the cholesterol content is remarkably reduced, and the egg products completely meet the food safety standard; the core problems that a traditional additive is insufficient in safety and unstable in nutrition enrichment are solved.

Description

Technical Field

[0001] This invention relates to the field of feed additive technology, specifically to a compound feed additive for laying hens used in the production of low-residue, high-nutrition jujube eggs and its preparation method. Background Technology

[0002] With increasing consumer demand for functional foods, low-residue, high-nutrition specialty eggs (such as selenium-enriched eggs and high-calcium eggs) have become market hotspots. As a functional egg product that combines nutrition and flavor, the quality of jujube eggs relies heavily on the scientific formulation of laying hen feed. Feed additives, as key carriers for nutrient enrichment in eggs, must simultaneously meet the requirements of nutritional fortification, safety with no residue, and suitability for the physiological characteristics of laying hens. This is the core technological support for achieving large-scale, standardized production of jujube eggs.

[0003] Currently, feed additives used in the production of functional egg products are mainly divided into two categories: one is single-nutrient supplement additives, which enrich specific nutrients by adding raw materials such as inorganic selenium and calcium carbonate; the other is simple compound additives, which mix trace elements, vitamins, and plant extracts, lacking a clear synergistic ratio design. Existing technologies mostly adopt direct mixing processes without precise control over parameters such as raw material pretreatment, mixing speed, and time, and mainly attempt to improve the nutritional indicators of egg products by adjusting the proportion of additives.

[0004] Existing functional feed additives for egg production have significant drawbacks: single-nutrient supplements rely on inorganic selenium, calcium carbonate, and other raw materials, resulting in low bioavailability and a risk of heavy metal residues in eggs; simple compound additives are merely a simple superposition of components, lacking a scientifically synergistic design, and failing to fully utilize the effects of each component; the preparation process is crude, failing to precisely control key parameters such as raw material pretreatment, mixing speed, and time, leading to poor product mixing uniformity, large batch quality fluctuations, and difficulty in consistently meeting the nutritional standards of eggs. In addition, some additives are cumbersome to apply, with poor compatibility and promotion. Summary of the Invention

[0005] The purpose of this invention is to overcome the technical problems of low nutrient enrichment efficiency, insufficient safety, and lack of multi-component synergistic mechanism in existing egg-laying hen feed additives. It provides a compound feed additive for egg-laying hens for producing low-residue, high-nutrition jujube eggs and its preparation method. The additive has a scientific composition and clear process parameters, and can stably produce high-selenium, high-calcium, and zero-residue high-quality eggs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a compound feed additive for laying hens used in the production of low-residue, high-nutrition jujube eggs, comprising an organic trace element group, a medicinal and edible plant group, a functional nutrient group, and a compound vitamin group formulated in specific weight proportions: Organic trace element group: organic selenium 550-650g, zinc methionine 250-350g, iron glycine 150-250g; Food and medicine homology plants group: Astragalus powder 35-45kg, wolfberry powder 25-35kg, yam powder 20-30kg; Functional nutrition group: 45-65 kg of 100-200 mesh spirulina powder, 1.0-1.5 kg of soybean lecithin with phosphatidylcholine content ≥20%; Multivitamin group: Vitamin A 80-120g, Vitamin D3 60-100g, Vitamin E 100-150g.

[0007] Preferably, the organic selenium is yeast selenium, with a selenium content of 2000-3000 mg / kg based on elemental calculation.

[0008] Preferably, the spirulina powder is made from naturally cultured Spirulina platensis dried at low temperature, with a protein content ≥60% and a moisture content ≤8%.

[0009] Preferably, the astragalus powder, wolfberry powder, and yam powder of the medicinal and edible plant group are all dried at a low temperature below 60°C and then pulverized and passed through a 100-120 mesh standard sieve to retain the effective active ingredients.

[0010] Preferably, all components of the compound vitamin group are feed-grade stable products, wherein vitamin A is microencapsulated, vitamin D3 is a spray-dried powder, and vitamin E is dl-α-tocopherol acetate. A method for preparing a compound feed additive for laying hens to produce low-residue, high-nutrition jujube eggs includes the following steps: Step 1: The components of the organic trace element group, the medicinal and edible plant group, the functional nutrition group, and the compound vitamin group are pulverized at low temperature and passed through a 100-120 mesh sieve to ensure that the particles are uniform and free of large particles. Step 2: Put all the sieved raw materials into a twin-shaft paddle mixer. Replace the mixer chamber with inert gas 3 times in advance, adjust the speed to 10-30 rpm, and premix for 5-8 minutes to make the components initially dispersed evenly. Step 3: Maintain inert gas protection, increase the mixer speed to 50-80 rpm, and continue main mixing for 10-15 minutes, monitoring the mixing uniformity every 3 minutes during this period; Step 4: Directly seal the well-mixed materials in a moisture-proof container, or granulate them into 2-4mm granules before sealing and storing them in a cool, dry place.

[0011] Preferably, the low-temperature pulverization in step one is carried out using an airflow pulverizer with a pulverization pressure of 0.6-0.8 MPa and a feeding speed of 50-100 kg / h.

[0012] Preferably, the dual-shaft paddle mixer in steps two and three has an inert gas-protected chamber and the mixing chamber is made of stainless steel.

[0013] Preferably, the sealed packaging in step four uses an aluminum foil composite bag, and contains 10-15g of silica gel desiccant.

[0014] Preferably, in step four, if granulation is required, the pellets are first formed by a ring die granulator with a die diameter of 2-4 mm, cooled to 30°C, and then sealed and packaged.

[0015] This invention provides a compound feed additive for laying hens used in the production of low-residue, high-nutrition jujube eggs, and its preparation method. It has the following beneficial effects: 1. This invention uses organic trace elements and medicinal and edible plants in combination, eliminating risky raw materials such as inorganic selenium. Combined with scientific synergistic ratio, it can stably increase the selenium and calcium content of eggs, and heavy metal and antibiotic residues are not detected. Moreover, the cholesterol content is significantly reduced, which fully meets food safety standards and solves the core problems of insufficient safety and unstable nutrient enrichment of traditional additives.

[0016] 2. This invention clarifies the standardized preparation process, including low-temperature pulverization of raw materials, inert gas-protected mixing, and precise parameter control. The coefficient of variation of mixing uniformity is ≤5%, and the quality fluctuation between batches is small, ensuring the consistency of nutritional indicators of egg products and overcoming the problem of uncontrollable product quality caused by the ambiguity of existing processes.

[0017] 3. The additive of the present invention can be directly added to the basic diet in proportion without additional pretreatment. It can achieve the expected effect after 30 days of continuous feeding. It is compatible with a variety of common laying hen breeds, is simple to operate, has low promotion cost, and meets the needs of large-scale farming. Attached Figure Description

[0018] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a schematic diagram of the four-group allocation and coordination mechanism in this invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As one aspect of the present invention, please refer to the appendix. Figure 2This invention provides a compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs, comprising an organic trace element group, a medicinal and edible plant group, a functional nutrient group, and a compound vitamin group formulated in specific weight proportions. Organic trace element group: organic selenium 550-650g, zinc methionine 250-350g, iron glycine 150-250g, organic selenium is yeast selenium, and the selenium content is 2000-3000mg / kg based on elemental calculation. Food and medicine homology plant group: Astragalus powder 35-45kg, wolfberry powder 25-35kg, yam powder 20-30kg are dried at a low temperature below 60℃ and then pulverized and passed through a 100-120 mesh standard sieve to retain the effective active ingredients; Functional Nutrition Group: 45-65 kg of 100-200 mesh spirulina powder, 1.0-1.5 kg of soybean lecithin with phosphatidylcholine content ≥20%. The spirulina powder is made from naturally cultured Spirulina platensis dried at low temperature, with a protein content ≥60% and a moisture content ≤8%. Multivitamin group: Vitamin A 80-120g, Vitamin D3 60-100g, Vitamin E 100-150g, all feed-grade stable products. Vitamin A is microencapsulated, Vitamin D3 is a spray-dried powder, and Vitamin E is dl-α-tocopherol acetate. As another aspect of the present invention, please refer to the appendix. Figure 1 This invention provides a method for preparing a compound feed additive for laying hens that produces low-residue, high-nutrition jujube eggs, comprising the following steps: Step 1: The components of the organic trace element group, the medicinal and edible plant group, the functional nutrition group, and the compound vitamin group are pulverized at low temperature and passed through a 100-120 mesh sieve to ensure uniform particle size and no large particle impurities. The low-temperature pulverization is carried out using an airflow pulverizer with a pulverization pressure of 0.6-0.8MPa and a feeding speed of 50-100kg / h. Step 2: Put all the sieved raw materials into a twin-shaft paddle mixer. The chamber is protected by inert gas and the mixing chamber is made of stainless steel. The mixing chamber is replaced with inert gas 3 times in advance. Adjust the speed to 10-30 rpm and premix for 5-8 minutes to make the components initially dispersed evenly. Step 3: Maintain inert gas protection, increase the mixer speed to 50-80 rpm, and continue main mixing for 10-15 minutes, monitoring the mixing uniformity every 3 minutes during this period; Step 4: Directly seal the well-mixed materials in a moisture-proof package. Use aluminum foil composite bags with 10-15g of silica gel desiccant inside. Alternatively, granulate the materials into 2-4mm granules before sealing and storing them in a cool, dry place. If granulation is used, first granulate the materials using a ring die granulator with a die diameter of 2-4mm, cool them to 30℃, and then seal and package them.

[0021] Step 5: Randomly select 3-5 samples from each batch to test moisture content, mixing uniformity, and sensory indicators. Once qualified, the samples are stored in an environment with a temperature ≤25℃ and relative humidity ≤60%, away from direct sunlight and odor sources. Shelf life is ≥12 months. The additive is to be used by mixing it evenly into the basic diet of laying hens (crude protein content 16%-18%, metabolizable energy 11.5-12.5 MJ / kg) at a ratio of 0.5wt%-1.5wt% and feeding it continuously for more than 30 days. It is suitable for common laying hen breeds such as Hy-Line Brown, Lohmann Brown and Isa Brown.

[0022] To better illustrate the formulation and preparation method of the compound feed additive for laying hens of the present invention, the following examples are provided: Example 1: A compound feed additive for laying hens used to produce low-residue, high-nutrient jujube eggs, comprising the following raw materials by weight: Organic trace element group: organic selenium 550g, methionine zinc 250g, glycine iron 150g; Food and medicine homology plant group: Astragalus powder 35kg, wolfberry powder 25kg, yam powder 20kg; Functional nutrition group: 45kg of 100-mesh spirulina powder, 1.0kg of soybean lecithin; Multivitamin group: Vitamin A 80g, Vitamin D3 60g, Vitamin E 100g.

[0023] Among them, organic selenium is yeast selenium (selenium content 2000mg / kg); spirulina powder protein content 60%; soybean lecithin phosphatidylcholine content 20%.

[0024] Its preparation method includes the following steps: Step 1: Raw material pretreatment Each component was pulverized at low temperature using an airflow pulverizer with a pulverization pressure of 0.6 MPa and a feed rate of 50 kg / h. After pulverization, the material was passed through a 100-mesh sieve, and the yield of the undersize material was ≥95%.

[0025] Step 2: Premixing Put the mixture into a twin-shaft paddle mixer, purge with nitrogen three times, and premix for 5 minutes at 10 rpm.

[0026] Step 3: Master Mixing Increase the speed to 50 rpm and mix for 10 minutes. The coefficient of variation of the mixing uniformity is ≤5%.

[0027] Step 4: Post-processing Packaged in an aluminum foil composite bag, with 10g of silica gel desiccant inside, heat-sealed at 180℃ for 2 seconds, and with a vacuum degree ≤-0.09MPa.

[0028] Step 5: Finished Product Inspection and Storage After passing the inspection, the products are stored in an environment with a temperature of ≤25℃ and a relative humidity of ≤60%.

[0029] Instructions for use: Add 0.5 wt% to the basic diet of laying hens and feed continuously for 30 days.

[0030] Example 2: A compound feed additive for laying hens used to produce low-residue, high-nutrient jujube eggs, comprising the following raw materials by weight: Organic trace element group: 600g organic selenium, 300g zinc methionine, 200g iron glycine; Food and medicine homology plant group: Astragalus powder 40kg, wolfberry powder 30kg, yam powder 25kg; Functional nutrition group: 55kg of 150-mesh spirulina powder, 1.2kg of soybean lecithin; Multivitamin group: Vitamin A 100g, Vitamin D3 80g, Vitamin E 120g.

[0031] Among them, organic selenium is yeast selenium (selenium content 2500mg / kg); spirulina powder protein content is 63%; soybean lecithin phosphatidylcholine content is 23%.

[0032] Its preparation method includes the following steps: Step 1: Raw material pretreatment Each component was pulverized at low temperature using an airflow pulverizer with a pulverization pressure of 0.7 MPa and a feed rate of 75 kg / h. After pulverization, the material was passed through a 110-mesh sieve, and the yield of the undersize material was ≥95%.

[0033] Step 2: Premixing Put it into a twin-shaft paddle mixer, purge with nitrogen 3 times, rotate at 20 rpm, and premix for 6 minutes.

[0034] Step 3: Master Mixing Increase the speed to 65 rpm and mix for 12 minutes. The coefficient of variation of the mixing uniformity is ≤5%.

[0035] Step 4: Post-processing Packaged in an aluminum foil composite bag, with 12g of silica gel desiccant inside. Heat-sealing temperature is 190℃, heat-sealing time is 2.5 seconds, and vacuum degree is ≤-0.09MPa.

[0036] Step 5: Finished Product Inspection and Storage After passing the inspection, the products are stored in an environment with a temperature of ≤25℃ and a relative humidity of ≤60%.

[0037] Instructions for use: Add 1.0 wt% to the basic diet of laying hens and feed continuously for 35 days.

[0038] Example 3: A compound feed additive for laying hens used to produce low-residue, high-nutrient jujube eggs, comprising the following raw materials by weight: Organic trace element group: Organic selenium 650g, methionine zinc 350g, glycine iron 250g; Food and medicine homology plant group: Astragalus powder 45kg, wolfberry powder 35kg, yam powder 30kg; Functional nutrition group: 65kg of 200-mesh spirulina powder, 1.5kg of soybean lecithin; Multivitamin group: Vitamin A 120g, Vitamin D3 100g, Vitamin E 150g.

[0039] Among them, organic selenium is yeast selenium (selenium content 3000mg / kg); spirulina powder protein content is 65%; soybean lecithin phosphatidylcholine content is 25%.

[0040] Its preparation method includes the following steps: Step 1: Raw material pretreatment Each component was pulverized at low temperature using an airflow pulverizer with a pulverization pressure of 0.8 MPa and a feed rate of 100 kg / h. After pulverization, the material was passed through a 120-mesh sieve, and the yield of the undersize material was ≥95%.

[0041] Step 2: Premixing Put the mixture into a twin-shaft paddle mixer, purge with nitrogen three times, and premix for 8 minutes at 30 rpm.

[0042] Step 3: Master Mixing Increase the speed to 80 rpm and mix for 15 minutes. The coefficient of variation of the mixing uniformity is ≤5%.

[0043] Step 4: Post-processing Packaged in an aluminum foil composite bag, with 15g of silica gel desiccant inside. Heat-sealing temperature is 200℃, heat-sealing time is 3 seconds, and vacuum degree is ≤-0.09MPa.

[0044] Step 5: Finished Product Inspection and Storage After passing the inspection, the products are stored in an environment with a temperature of ≤25℃ and a relative humidity of ≤60%.

[0045] Instructions for use: Add 1.5 wt% to the basic diet of laying hens and feed continuously for 40 days.

[0046] Experimental example: Four groups of Hy-Line Brown laying hens with similar health conditions and egg production rates (≥85%) were selected, with 30 hens in each group. They were fed a basal diet supplemented with the additives described in Examples 1-3 (experimental group) and a basal diet supplemented with traditional feed additives (comparative group), respectively. After 45 days of continuous feeding, egg samples were randomly collected from each group and sent to PONY Testing Group for testing. The results are shown in the table below:

[0047] The results show that the compound feed additive for laying hens prepared in this invention can significantly increase the content of selenium and calcium nutrients in eggs, reduce cholesterol content, and produce eggs without heavy metal and antibiotic residues. The egg quality rate is high, which has obvious advantages over traditional additives. It can stably produce low-residue, high-nutrition red date eggs, and is safe, environmentally friendly, and has excellent application effects.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compound feed additive for laying hens used to produce low-residue, high-nutrient jujube eggs, characterized in that, It consists of a specific weight ratio of organic trace elements, medicinal and edible plants, functional nutrients, and multivitamins: Organic trace element group: organic selenium 550-650g, zinc methionine 250-350g, iron glycine 150-250g; Food and medicine homology plants group: Astragalus powder 35-45kg, wolfberry powder 25-35kg, yam powder 20-30kg; Functional nutrition group: 45-65 kg of 100-200 mesh spirulina powder, 1.0-1.5 kg of soybean lecithin with phosphatidylcholine content ≥20%; Multivitamin group: Vitamin A 80-120g, Vitamin D3 60-100g, Vitamin E 100-150g.

2. The compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs according to claim 1, characterized in that, The organic selenium is yeast selenium, with a selenium content of 2000-3000 mg / kg based on elemental calculation.

3. The compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs according to claim 1, characterized in that, The spirulina powder is made from naturally cultured Spirulina platensis dried at low temperature, with a protein content of ≥60% and a moisture content of ≤8%.

4. The compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs according to claim 1, characterized in that, The astragalus powder, wolfberry powder, and yam powder of the medicinal and edible plant group are all dried at a low temperature below 60℃ and then pulverized and passed through a 100-120 mesh standard sieve to retain the effective active ingredients.

5. The compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs according to claim 1, characterized in that, All components of the compound vitamin group are feed-grade stable products, with vitamin A using microencapsulation technology, vitamin D3 being a spray-dried powder, and vitamin E being dl-α-tocopherol acetate.

6. A method for preparing a compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs, comprising using the compound feed additive for laying hens used to produce low-residue, high-nutrition jujube eggs as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1: The components of the organic trace element group, the medicinal and edible plant group, the functional nutrition group, and the compound vitamin group are pulverized at low temperature and passed through a 100-120 mesh sieve to ensure uniform particle size and no large particle impurities. Step 2: Put all the sieved raw materials into a twin-shaft paddle mixer. The mixer chamber should be purged with inert gas 3 times in advance. Adjust the speed to 10-30 rpm and premix for 5-8 minutes to make the components initially dispersed evenly. Step 3: Maintain inert gas protection, increase the mixer speed to 50-80 rpm, and continue main mixing for 10-15 minutes, monitoring the mixing uniformity every 3 minutes during this period; Step 4: Directly seal the well-mixed materials in a moisture-proof container, or granulate them into 2-4mm granules before sealing and storing them in a cool, dry place.

7. The preparation method of a compound feed additive for laying hens producing low-residue, high-nutrition jujube eggs according to claim 6, characterized in that, In step one, the low-temperature pulverization is carried out using an airflow pulverizer with a pulverization pressure of 0.6-0.8 MPa and a feeding speed of 50-100 kg / h.

8. The method for preparing a compound feed additive for laying hens producing low-residue, high-nutrition jujube eggs according to claim 6, characterized in that, The twin-shaft paddle mixers in steps two and three have inert gas protection for their chambers, and the mixing chambers are made of stainless steel.

9. A method for preparing a compound feed additive for laying hens producing low-residue, high-nutrition jujube eggs according to claim 6, characterized in that, In step four, the sealed packaging uses an aluminum foil composite bag, and contains 10-15g of silica gel desiccant.

10. A method for preparing a compound feed additive for laying hens producing low-residue, high-nutrition jujube eggs according to claim 6, characterized in that, If granulation is required in step four, the pellets are first formed by a ring die granulator with a die diameter of 2-4 mm, and then sealed and packaged after cooling to 30°C.

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