Method for producing artificial feed for silkworms by using mulberry leaf grinding liquid

Abstract

The invention relates to the technical field of feed production, in particular to a method for producing silkworm artificial feed by using mulberry leaf grinding fluid, which comprises the following steps: S1, collecting fresh mulberry leaves, and performing primary treatment on the fresh mulberry leaves; s2, cleaning the mulberry leaves subjected to primary treatment; s3, putting the cleaned mulberry leaves into grinding equipment to form mulberry leaf juice; s4, filtering the mulberry leaf juice; s5, carrying out concentration treatment on the filtered mulberry leaf juice; s6, mixing the concentrated mulberry leaf juice with prepared nutritional ingredients according to a preset proportion to form a uniform feed mixed solution; s7, carrying out granulation treatment on the feed mixed solution; and S8, drying and cooling the granulated feed to obtain a final silkworm artificial feed finished product. According to the invention, the mulberry leaf juice is used for producing the silkworm artificial feed, so that the processing technology of mulberry leaves is optimized, the utilization rate of nutritional ingredients of the feed is improved, and the production cost of the feed is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of feed production, and in particular to a method for producing artificial feed for silkworms by utilizing mulberry leaf grinding liquid. Background Art

[0002] Silkworm (Bombyx mori) is an important economic insect in my country and is widely used in silk production and the development of related industrial chains. Traditionally, silkworms mainly use fresh mulberry leaves as feed because they are rich in various nutrients required for silkworm growth, such as protein, carbohydrates, minerals and vitamins. However, with the scale and modernization of sericulture, relying on fresh mulberry leaves as the main feed faces many challenges. First, the production of mulberry leaves has obvious seasonal and geographical restrictions, resulting in insufficient supply of mulberry leaves in the non-harvest season and remote areas, affecting the stable breeding of silkworms. Secondly, the collection, transportation and storage of fresh mulberry leaves are costly, especially during long-distance transportation and storage, mulberry leaves are easily contaminated and damaged, further increasing the cost of silkworm breeding. In addition, climate change and the frequent occurrence of pests and diseases also have an adverse effect on the yield and quality of mulberry leaves, which in turn affects the healthy growth of silkworms and the quality of silkworm cocoons.

[0003] In response to the above problems, scholars and enterprises in the prior art have tried to develop artificial feed for silkworms in the form of mulberry leaf extracts, mulberry leaf powder, etc., in order to replace part or all of the fresh mulberry leaves and alleviate the problems of insufficient feed supply and high costs; however, the existing artificial feed production methods still have shortcomings in terms of the balance of nutrients, the growth rate of silkworms and the quality of cocoons; for example, some methods, due to imperfect processing technology, lead to the loss of nutrients in the feed or are not easily effectively absorbed by the silkworms, affecting the health and yield of the silkworms; in addition, the production cost is still high, making it difficult to achieve large-scale promotion and application. Summary of the invention

[0004] Based on the above purpose, the present invention provides a method for producing artificial feed for silkworms by utilizing mulberry leaf grinding liquid.

[0005] A method for producing artificial feed for silkworms by using mulberry leaf grinding liquid comprises the following steps: S1: Collect fresh mulberry leaves and perform preliminary processing to remove impurities and leaves with pests and diseases; S2: washing the mulberry leaves after the preliminary treatment to remove dust and pesticide residues on the surface; S3: putting the washed mulberry leaves into a grinding device, adding an appropriate amount of water, and grinding the mulberry leaves into a fine slurry through mechanical grinding to form mulberry leaf juice; S4: filtering the mulberry leaf juice formed in S3 through a filtering device to remove incompletely ground crude fibers and impurities to obtain pure mulberry leaf juice; S5: concentrating the filtered mulberry leaf juice to reduce its water content; S6: mixing the concentrated mulberry leaf juice with the prepared nutrients in a predetermined ratio to form a uniform feed mixture, wherein the prepared nutrients include protein sources, carbohydrates, minerals and vitamins; S7: processing the feed mixture formed in S6 through a granulation device to form a granular feed suitable for silkworms; S8: Drying the pelletized feed to remove excess water, and then cooling the feed to obtain a final finished product of artificial silkworm feed.

[0006] Optionally, the S1 specifically includes: S11: Collect fresh mulberry leaves from mulberry trees with leaves free of pests and diseases and without obvious damage. The collection time is spring and autumn; S12: Screening the collected mulberry leaves to remove leaves with pests and diseases or obvious deterioration; S13: Preliminary cutting is performed on the screened mulberry leaves, and the cutting size is such that each leaf is 5-10 cm long.

[0007] Optionally, the S2 specifically includes: S21: Soaking the preliminarily treated mulberry leaves in clean water for 5 to 10 minutes; S22: washing the mulberry leaves with running water for 3 to 5 minutes to remove dust on the surface; S23: soaking the washed mulberry leaves in an aqueous solution containing a pesticide residue cleaning agent having a concentration of 0.5% to 1.5% for 3 to 5 minutes to remove the pesticide residues; S24: Rinse the mulberry leaves again with running water for 3 to 5 minutes.

[0008] Optionally, the S3 specifically includes: S31: putting the washed mulberry leaves into a grinding device, wherein the mass ratio of the mulberry leaves to water is 1:1 to 1:3; S32: starting the grinding equipment, grinding by mechanical grinding, controlling the mechanical grinding speed to be 1000 to 3000 revolutions per minute, and the grinding time to be 5 to 15 minutes; S33: collecting the ground mulberry leaf slurry to obtain mulberry leaf juice.

[0009] Optionally, the S4 specifically includes: S41: putting the mulberry leaf juice formed in S3 into a filtering device; S42: The pore size of the filter is selected to be controlled within the range of 20-80 meshes, and the mulberry leaf juice is filtered by mechanical filtration to remove incompletely ground crude fibers and impurities.

[0010] Optionally, the S5 specifically includes: S51: putting the filtered mulberry leaf juice into a concentration device and treating it by evaporation concentration; S52: setting the temperature of the concentration device to 40° C. to 60° C. and maintaining the temperature for concentration processing; S53: controlling the evaporation rate to be between 500 and 1500 liters / hour, so that the water content of the mulberry leaf juice is reduced to 50% to 70%, thereby forming concentrated mulberry leaf juice; S54: The concentrated mulberry leaf juice is introduced into the sterilization equipment and treated by high-temperature instantaneous sterilization. The sterilization temperature is controlled at 90°C and the sterilization time is 30 minutes.

[0011] Optionally, the S6 specifically includes: S61: Weigh the concentrated mulberry leaf juice and the nutrients according to a predetermined ratio, wherein the mulberry leaf juice accounts for 32%-56% of the total feed mixture, the protein source accounts for 20%-30%, the carbohydrate accounts for 20%-30%, the minerals account for 3%-5%, and the vitamins account for 1%-3%; S62: putting the concentrated mulberry leaf juice and the nutrients weighed in S61 into a mixing container, stirring them using a stirring device at a stirring speed of 200 to 400 revolutions per minute for 10 to 20 minutes to ensure that the ingredients are evenly mixed; S63: During the stirring process, the mixing temperature is controlled at 25° C. to 35° C.; S64: After the stirring is completed, the formed feed mixture is transferred to a storage container for standby use.

[0012] Optionally, the protein source is selected from soybean meal, fish meal or insect meal; the carbohydrate is selected from corn meal, wheat flour or sugarcane bagasse; the mineral is selected from calcium, phosphorus or potassium; and the vitamin is selected from vitamin B, C or D.

[0013] Optionally, the S7 specifically includes: S71: conveying the feed mixture formed in S6 to a granulation device, wherein the granulation device is an extrusion granulator; S73: conveying the feed mixture to a pelletizing device at a pressure of 5 to 15 bar; S74: setting the granulation temperature to 70°C to 90°C and starting the granulation equipment to granulate the feed mixture at this temperature; S75: Control the granulation speed to 100 to 300 kg per hour; S76: After the granulation process, a granular feed is obtained, and the diameter of the granules is controlled to be 2 mm to 5 mm.

[0014] Optionally, the S8 specifically includes: S81: conveying the pelletized feed formed in S7 to a drying device for drying, setting the temperature of the drying device to 50°C to 70°C, controlling the drying time to 2 to 4 hours, and reducing the moisture content of the pellets to 10% to 12%; S82: transporting the dried feed particles from the drying device to a cooling device; S83: In the cooling device, the cooling temperature is set to 20° C. to 30° C., and the feed particles are cooled until they reach room temperature, so as to obtain the final finished product of artificial feed for silkworms.

[0015] Beneficial effects of the present invention: The present invention retains the nutrients in the mulberry leaves to the greatest extent by washing, grinding, filtering, concentrating and sterilizing the mulberry leaves, avoids the loss of nutrients during the processing, and effectively integrates the nutrients into the feed system, while maintaining the original smell and component characteristics of the mulberry leaves, which helps to enhance the feeding appeal to silkworms and improve the silkworms' acceptance of artificial feeds.

[0016] The invention mixes mulberry leaf juice with other nutrients in proportion and adopts granulation technology to prepare granular feed, which not only improves the storage and transportation performance of the feed but also facilitates the silkworms to eat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of a method for producing artificial feed for silkworms according to an embodiment of the present invention; Figure 2 Schematic diagram of a method for preparing a feed mixture according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0020] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0021] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described. Example

[0022] like Figure 1-Figure 2 As shown, a method for producing artificial feed for silkworms using mulberry leaf grinding liquid comprises the following steps: S1: Collect fresh mulberry leaves and process them preliminarily to remove impurities and pests to ensure the purity and quality of the raw materials; S2: Wash the mulberry leaves after preliminary treatment to remove dust and pesticide residues on the surface, ensuring that the cleanliness of the mulberry leaves meets the standards for feed production; S3: putting the washed mulberry leaves into a grinding device, adding an appropriate amount of water, and grinding the mulberry leaves into a fine slurry through mechanical grinding to form mulberry leaf juice; S4: filtering the mulberry leaf juice formed in S3 through a filtering device to remove incompletely ground crude fibers and impurities to obtain pure mulberry leaf juice; S5: Concentrate the filtered mulberry leaf juice to reduce its water content and increase the concentration of nutrients, thus providing a basis for subsequent feed ratio; S6: mixing the concentrated mulberry leaf juice with the prepared nutrients in a predetermined ratio to form a uniform feed mixture, wherein the prepared nutrients include protein sources, carbohydrates, minerals and vitamins; S7: Processing the feed mixture formed in S6 through a granulating device to form a granular feed suitable for silkworms, ensuring that the size and shape of the granules are appropriate for the silkworms to ingest; S8: Drying the pelletized feed to remove excess water, and then cooling the feed to obtain a final finished product of artificial silkworm feed.

[0023] S1 specifically includes: S11: Collect fresh mulberry leaves from mulberry trees with leaves free of pests and diseases and without obvious damage. The collection time is spring and autumn; S12: Screening the collected mulberry leaves to remove leaves with pests and diseases or obvious deterioration; S13: The screened mulberry leaves are preliminarily cut into pieces with each leaf having a length of 8 cm for subsequent cleaning and processing.

[0024] S2 specifically includes: S21: Soaking the preliminarily treated mulberry leaves in clean water for 7 minutes; S22: washing the mulberry leaves with running water for 4 minutes to remove dust on the surface; S23: soaking the washed mulberry leaves in an aqueous solution containing a 1% concentration of a pesticide residue cleaning agent for 3 to 5 minutes to remove the pesticide residues; S24: Rinse the mulberry leaves again with running water for 4 minutes.

[0025] S3 specifically includes: S31: putting the washed mulberry leaves into a grinding device, wherein the mass ratio of the mulberry leaves to the water is 1:2; S32: Start the grinding equipment, use mechanical grinding to grind, control the mechanical grinding speed to 2000 revolutions per minute, and the grinding time to 10 minutes; S33: collecting the ground mulberry leaf slurry to obtain mulberry leaf juice.

[0026] S4 specifically includes: S41: putting the mulberry leaf juice formed in S3 into a filtering device; S42: The pore size of the filter is selected to be controlled at 60 meshes, and the mulberry leaf juice is filtered by mechanical filtration to remove incompletely ground crude fibers and impurities.

[0027] S5 specifically includes: S51: putting the filtered mulberry leaf juice into a concentration device and treating it by evaporation concentration; S52: setting the temperature of the concentration device to 50° C. and maintaining the temperature for concentration processing; S53: controlling the evaporation rate to 1000 liters / hour to reduce the water content of the mulberry leaf juice to 60%, thereby forming concentrated mulberry leaf juice; S54: The concentrated mulberry leaf juice is introduced into the sterilization equipment and treated by high-temperature instantaneous sterilization. The sterilization temperature is controlled at 90°C and the sterilization time is 30 minutes.

[0028] S6 specifically includes: S61: Weighing the concentrated mulberry leaf juice and the nutrients according to a predetermined ratio, wherein the mulberry leaf juice accounts for 45% of the total amount of the feed mixture, the protein source accounts for 25%, the carbohydrate accounts for 25%, the minerals account for 4%, and the vitamins account for 2%; S62: putting the concentrated mulberry leaf juice and the nutrients weighed in S61 into a mixing container, stirring them using a stirring device at a stirring speed of 300 revolutions per minute for 15 minutes to ensure that the ingredients are evenly mixed; S63: During the stirring process, the mixing temperature is controlled at 30° C. to ensure the stability of the nutrients and the uniformity of the mixing; S64: After the stirring is completed, the formed feed mixture is transferred to a storage container for standby use, in preparation for the subsequent feed pelleting step.

[0029] The protein source is selected from fish meal; the carbohydrate is selected from wheat flour; the mineral is selected from phosphorus, and the vitamin is selected from vitamin C.

[0030] S7 specifically includes: S71: conveying the feed mixture formed in S6 to a granulation device, wherein the granulation device is an extrusion granulator; S73: conveying the feed mixture to a pelletizing device at a pressure of 10 bar; S74: setting the granulation temperature to 80°C and starting the granulation equipment to granulate the feed mixture at this temperature; S75: Control the granulation speed to 200 kg per hour to ensure the uniformity and molding quality of the granules; S76: After the granulation process, granular feed is obtained, and the diameter of the granules is controlled at 3 mm.

[0031] S8 specifically includes: S81: conveying the pelletized feed formed in S7 to a drying device for drying, setting the temperature of the drying device to 60°C, and controlling the drying time to 3 hours to ensure that the excess water in the feed pellets is fully removed, and reducing the moisture content of the pellets to 10% to 12%; S82: transporting the dried feed particles from the drying device to a cooling device; S83: In the cooling device, the cooling temperature is set to 25° C., and the feed particles are cooled until they reach room temperature, so as to obtain the final finished product of artificial feed for silkworms. Example

[0032] S1: Collect and preliminarily process mulberry leaves. Collect fresh mulberry leaves and select mulberry leaves without diseases and insect pests and obvious damage. The collection time is spring and autumn. After collection, screen the mulberry leaves and remove the leaves with diseases and insect pests or obvious deterioration. Then, preliminarily cut the screened mulberry leaves, and control the length of each leaf to 5 cm. S2: Washing the mulberry leaves, soaking the preliminarily treated mulberry leaves in clean water for 5 minutes; then, rinsing the mulberry leaves with running water for 3 minutes to effectively remove dust and impurities on the surface; then, immersing the mulberry leaves in an aqueous solution containing a 0.5% concentration of a pesticide residue cleaning agent for 3 minutes to completely remove the pesticide residues; finally, rinsing the mulberry leaves again with running water for 3 minutes to ensure that the mulberry leaves are completely clean; Step S3: grinding the mulberry leaves, putting the washed mulberry leaves and an appropriate amount of water into a grinding device at a mass ratio of 1:1; starting the grinding device, and processing by mechanical grinding, the speed of the mechanical grinding is set at 1000 revolutions per minute, and the grinding time is controlled at 5 minutes; through grinding, the mulberry leaves are ground into a fine slurry, and finally the mulberry leaf juice is collected; S4: filtering the mulberry leaf juice, putting the ground mulberry leaf slurry into a filtering device, and selecting a filter aperture of 20 meshes; filtering the mulberry leaf juice by mechanical filtration to remove incompletely ground crude fibers and impurities, so as to ensure that pure mulberry leaf juice is obtained; S5: Concentrate the mulberry leaf juice, put the filtered mulberry leaf juice into the concentration equipment, and treat it by evaporation concentration; set the temperature of the concentration equipment at 40°C and maintain the temperature for concentration treatment; at the same time, control the evaporation rate at 500 liters / hour to reduce the water content of the mulberry leaf juice to 50%; after the concentration treatment, the concentrated mulberry leaf juice is obtained, which is convenient for subsequent feed proportioning and processing; S6: Mix the nutrients. According to the predetermined ratio, weigh the concentrated mulberry leaf juice and the prepared nutrients. The specific ratio is: mulberry leaf juice accounts for 56% of the total amount of the feed mixture, protein source (soybean powder) accounts for 20%, carbohydrates account for (corn powder) 20%, minerals account for (calcium) 3%, and vitamin B accounts for 1%; put the weighed concentrated mulberry leaf juice and nutrients into a mixing container, use a stirring device to stir at a speed of 200 revolutions per minute, and control the stirring time to 10 minutes. At the same time, control the mixing temperature at 25°C to ensure that the ingredients are evenly mixed; after the stirring is completed, transfer the formed feed mixture to a storage container for standby use; S7: Granulation treatment, conveying the feed mixture to a granulation device, usually using an extrusion granulator; conveying the feed mixture to the granulation device at a pressure of 5 bar, setting the granulation temperature at 70°C, and starting the granulation device to granulate the feed mixture at this temperature; controlling the granulation speed at 100 kg per hour to ensure the uniformity and production efficiency of the granules; after the granulation process, a granular feed suitable for silkworms is obtained, and the diameter of the granules is controlled at 2 mm; S8: Drying and cooling. The granular feed is transported to the drying equipment for drying. The temperature of the drying equipment is set at 50°C and the drying time is controlled to 2 hours to reduce the moisture content of the particles to 10%. After the drying is completed, the dried feed particles are transported to the cooling device. The cooling temperature in the cooling device is set to 20°C and the feed particles are cooled until they reach room temperature. Finally, a finished product of artificial silkworm feed that meets the requirements is obtained, which is suitable for the healthy growth and feeding needs of silkworms. Example

[0033] S1: Collect and preliminarily process mulberry leaves. Collect fresh mulberry leaves and select mulberry leaves without diseases and insect pests and obvious damage. The collection time is spring and autumn. After collection, screen the mulberry leaves and remove the leaves with diseases and insect pests or obvious deterioration. Then, preliminarily cut the screened mulberry leaves, and control the length of each leaf to 10 cm. S2: Washing the mulberry leaves, soaking the preliminarily treated mulberry leaves in clean water for 10 minutes; then, rinsing the mulberry leaves with running water for 5 minutes to effectively remove dust and impurities on the surface; then, soaking the mulberry leaves in an aqueous solution containing a 1.5% concentration of a pesticide residue cleaning agent for 5 minutes to completely remove the pesticide residues; finally, rinsing the mulberry leaves again with running water for 5 minutes to ensure that the mulberry leaves are completely clean; Step S3: grinding the mulberry leaves, putting the washed mulberry leaves and an appropriate amount of water into a grinding device at a mass ratio of 1:3; starting the grinding device, and processing by mechanical grinding, the speed of the mechanical grinding is set at 3000 revolutions per minute, and the grinding time is controlled at 15 minutes; grinding the mulberry leaves into a fine slurry, and finally collecting the mulberry leaf juice; S4: filtering the mulberry leaf juice, putting the ground mulberry leaf slurry into a filtering device, and selecting a filter aperture of 80 meshes; filtering the mulberry leaf juice by mechanical filtration to remove incompletely ground crude fibers and impurities, to ensure that pure mulberry leaf juice is obtained; S5: Concentrate the mulberry leaf juice, put the filtered mulberry leaf juice into the concentration equipment, and treat it by evaporation concentration; set the temperature of the concentration equipment at 60°C and maintain the temperature for concentration treatment; at the same time, control the evaporation rate at 1500 liters / hour to reduce the water content of the mulberry leaf juice to 70%; after the concentration treatment, the concentrated mulberry leaf juice is obtained, which is convenient for subsequent feed proportioning and processing; S6: Mix the nutrients. According to the predetermined ratio, weigh the concentrated mulberry leaf juice and the prepared nutrients. The specific ratio is: mulberry leaf juice accounts for 32% of the total amount of the feed mixture, protein source (insect powder) accounts for 30%, carbohydrates account for (sugarcane bagasse) 30%, minerals account for (potassium) 6%, and vitamin D accounts for 3%; put the weighed concentrated mulberry leaf juice and nutrients into a mixing container, use a stirring device to stir at a speed of 400 revolutions per minute, and control the stirring time to 20 minutes. At the same time, control the mixing temperature at 35°C to ensure that the ingredients are evenly mixed; after the stirring is completed, transfer the formed feed mixture to a storage container for standby use; S7: Granulation treatment, conveying the feed mixture to a granulation device, usually using an extrusion granulator; conveying the feed mixture to the granulation device at a pressure of 15 bar, setting the granulation temperature at 90°C, and starting the granulation device to granulate the feed mixture at this temperature; controlling the granulation speed at 300 kg per hour to ensure the uniformity and production efficiency of the granules; after the granulation process, a granular feed suitable for silkworms is obtained, and the diameter of the granules is controlled at 5 mm; S8: Drying and cooling. The granular feed is transported to the drying equipment for drying. The temperature of the drying equipment is set at 70°C. The drying time is controlled to 4 hours to reduce the moisture content of the particles to 12%. After the drying is completed, the dried feed particles are transported to the cooling device. The cooling temperature in the cooling device is set to 30°C. The feed particles are cooled until they reach room temperature. Finally, a finished product of artificial silkworm feed that meets the requirements is obtained, which is suitable for the healthy growth and feeding needs of silkworms.

[0034] Comparative Example 1 (Conventional silkworm feed production method currently on the market) Step 1: First, collect fresh mulberry leaves, make sure the leaves are free of pests and diseases and have no obvious damage, and rinse them thoroughly with clean water for 10 minutes to remove dust and impurities on the surface; Step 2: Spread the washed mulberry leaves evenly in a dryer, set the drying temperature to 60°C, and continue drying for 5 hours until the moisture content of the mulberry leaves drops below 10%; Step 3: Put the dried mulberry leaves into a grinder for grinding. The grinding time is set to 20 minutes and the target particle size is controlled between 1-2 mm to obtain fine mulberry leaf powder. Step 4: Prepare other feed ingredients, including soybean meal and corn meal. Weigh mulberry leaf meal (50%), soybean meal (30%) and corn meal (20%) according to the proportions, and use a mixer to mix at 300 rpm for 15 minutes to ensure that the ingredients are evenly distributed. Step 5: The mixed feed mixture is fed into a feed press and pressed into granular feed with a diameter of 3 mm.

[0035] Table 1 Comparison of finished product performance parameters Compare Projects Example 1 Example 2 Example 3 Comparative Example 1 Protein content (%) 25% 20% 30% 30% Carbohydrate content (%) 25% 20% 30% 20% Mineral content (%) 4% 3% 6% 0% Vitamin content (%) 2% (Vitamin C) 1% (Vitamin B) 3% (vitamin D) 0% Moisture content (%) 11% 10% 12% 8% Particle diameter (mm) 3 mm 2 mm 5 mm 3 mm Production cost (yuan / ton) 5000 NTD 4800 NTD 5200 NTD 4500 NTD Feed uniformity (%) 95% 90% 88% 85% Silkworm survival rate (%) 98% 95% 93% 92% Silkworm growth rate (days) 15 days 16 days 17 days 18 days It can be seen from Table 1 above that Example 1 is the best example, which is superior to Examples 2 and 3 in key indicators such as nutritional components, feed uniformity, silkworm survival rate and growth rate, and is significantly superior to the prior art comparative example 1; although its production cost is slightly higher, by providing more comprehensive nutritional support and higher feeding efficiency, Example 1 has higher application value and market competitiveness, and can effectively promote the healthy growth and feeding needs of silkworms.

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for producing artificial feed for silkworms using mulberry leaf grinding liquid, characterized in that: The following steps are involved: S1: Collect fresh mulberry leaves and perform preliminary processing to remove impurities and leaves with pests and diseases; S2: washing the mulberry leaves after the preliminary treatment to remove dust and pesticide residues on the surface; S3: putting the washed mulberry leaves into a grinding device, adding an appropriate amount of water, and grinding the mulberry leaves into a fine slurry through mechanical grinding to form mulberry leaf juice; S4: filtering the mulberry leaf juice formed in S3 through a filtering device to remove incompletely ground crude fibers and impurities to obtain pure mulberry leaf juice; S5: concentrating and sterilizing the filtered mulberry leaf juice; S6: mixing the concentrated mulberry leaf juice with the prepared nutrients in a predetermined ratio to form a uniform feed mixture, wherein the prepared nutrients include protein sources, carbohydrates, minerals and vitamins; S7: processing the feed mixture formed in S6 through a granulation device to form a granular feed suitable for silkworms; S8: Drying the pelletized feed to remove excess water, and then cooling the feed to obtain a final finished product of artificial silkworm feed.

2. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S1 specifically includes: S11: Collect fresh mulberry leaves from mulberry trees with leaves free of pests and diseases and without obvious damage. The collection time is spring and autumn; S12: Screening the collected mulberry leaves to remove leaves with pests and diseases or obvious deterioration; S13: Preliminary cutting is performed on the screened mulberry leaves, and the cutting size is such that each leaf is 5-10 cm long.

3. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S2 specifically includes: S21: Soaking the preliminarily treated mulberry leaves in clean water for 5 to 10 minutes; S22: washing the mulberry leaves with running water for 3 to 5 minutes to remove dust on the surface; S23: soaking the washed mulberry leaves in an aqueous solution containing a pesticide residue cleaning agent having a concentration of 0.5% to 1.5% for 3 to 5 minutes to remove the pesticide residues; S24: Rinse the mulberry leaves again with running water for 3 to 5 minutes.

4. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S3 specifically includes: S31: putting the washed mulberry leaves into a grinding device, wherein the mass ratio of the mulberry leaves to water is 1:1 to 1:3; S32: starting the grinding equipment, grinding by mechanical grinding, controlling the mechanical grinding speed to be 1000 to 3000 revolutions per minute, and the grinding time to be 5 to 15 minutes; S33: collecting the ground mulberry leaf slurry to obtain mulberry leaf juice.

5. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S4 specifically includes: S41: putting the mulberry leaf juice formed in S3 into a filtering device; S42: The pore size of the filter is selected to be controlled within the range of 20-80 meshes, and the mulberry leaf juice is filtered by mechanical filtration to remove incompletely ground crude fibers and impurities.

6. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S5 specifically includes: S51: putting the filtered mulberry leaf juice into a concentration device and treating it by evaporation concentration; S52: setting the temperature of the concentration device to 40° C. to 60° C. and maintaining the temperature for concentration processing; S53: controlling the evaporation rate to be between 500 and 1500 liters / hour, so that the water content of the mulberry leaf juice is reduced to 50% to 70%, thereby forming concentrated mulberry leaf juice; S54: The concentrated mulberry leaf juice is introduced into the sterilization equipment and treated by high-temperature instantaneous sterilization. The sterilization temperature is controlled at 90°C and the sterilization time is 30 minutes.

7. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S6 specifically includes: S61: Weigh the concentrated mulberry leaf juice and the nutrients according to a predetermined ratio, wherein the mulberry leaf juice accounts for 32%-56% of the total feed mixture, the protein source accounts for 20%-30%, the carbohydrate accounts for 20%-30%, the minerals account for 3%-5%, and the vitamins account for 1%-3%; S62: putting the concentrated mulberry leaf juice and the nutrients weighed in S61 into a mixing container, stirring them using a stirring device at a stirring speed of 200 to 400 revolutions per minute for 10 to 20 minutes to ensure that the ingredients are evenly mixed; S63: During the stirring process, the mixing temperature is controlled at 25° C. to 35° C.; S64: After the stirring is completed, the formed feed mixture is transferred to a storage container for standby use.

8. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 7, characterized in that: The protein source is selected from soybean meal, fish meal or insect meal; the carbohydrate is selected from corn meal, wheat meal or sugarcane bagasse; the mineral is selected from calcium, phosphorus or potassium; and the vitamin is selected from vitamin B, C or D.

9. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S7 specifically includes: S71: conveying the feed mixture formed in S6 to a granulation device, wherein the granulation device is an extrusion granulator; S73: conveying the feed mixture to a pelletizing device at a pressure of 5 to 15 bar; S74: setting the granulation temperature to 70°C to 90°C and starting the granulation equipment to granulate the feed mixture at this temperature; S75: Control the granulation speed to 100 to 300 kg per hour; S76: After the granulation process, a granular feed is obtained, and the diameter of the granules is controlled to be 2 mm to 5 mm.

10. The method for producing artificial feed for silkworms using mulberry leaf grinding liquid according to claim 1, characterized in that: The S8 specifically includes: S81: conveying the pelletized feed formed in S7 to a drying device for drying, setting the temperature of the drying device to 50°C to 70°C, controlling the drying time to 2 to 4 hours, and reducing the moisture content of the pellets to 10% to 12%; S82: transporting the dried feed particles from the drying device to a cooling device; S83: In the cooling device, the cooling temperature is set to 20° C. to 30° C., and the feed particles are cooled until they reach room temperature, so as to obtain the final finished product of artificial feed for silkworms.

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