Method for repairing male macrobrachium rosenbergii with red body color
By using high-purity taurine-repaired feed and a light-shielding feeding method, combined with an automated identification and sorting device, the problem of red body color in giant freshwater prawns was solved, the physiological functions of the prawns were restored, and the seedling production effect and economic benefits were improved.
Patent Information
- Application Number
- CN202610004665.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-02-27
AI Technical Summary
As male giant freshwater prawns age and mate more frequently, they develop problems such as reddening of the body, decreased vitality, and ciliates attached to the body surface, which seriously affect the seedling production. Current technology lacks effective methods to remedy these issues.
By using a specific ratio of repair feed combined with a light-protected feeding method, a repair feed containing high-purity taurine was prepared. Combined with light-protected feeding and an automated identification and sorting device, the taurine metabolic pathway of red shrimp was specifically improved, restoring its antioxidant capacity and hepatopancreatic function.
It significantly improved the recovery rate of body color in red shrimp, restored their antioxidant capacity and hepatopancreas index, increased the egg-carrying rate and metamorphosis rate of female shrimp, and enabled the successful breeding of giant freshwater prawns, bringing economic benefits.
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Figure CN121569764A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of giant freshwater prawn (Macrobrachium rosenbergii) aquaculture technology, specifically to a method for restoring the reddish body color of male giant freshwater prawns. Background Technology
[0002] Giant freshwater prawns are an important freshwater aquaculture species in my country, characterized by high nutritional value and stable market prices. They are an important source of high-quality protein in the diet of residents. In the core production areas of giant freshwater prawn broodstock, the quality of the broodstock directly determines the success rate of seedling cultivation and the subsequent aquaculture benefits.
[0003] However, in the practice of giant freshwater prawn (Macrobrachium rosenbergii) farming, it has been found that male individuals develop an overall reddish tinge as the farming time increases, their age increases, and the number of matings increases. The redness of the tail and cephalothorax is significantly higher than that of other parts of the body. This is accompanied by a significant decrease in vitality and easy attachment of ciliates to the body surface, which seriously hinders normal mating behavior, leading to a decrease in the egg-carrying rate of female prawns and ultimately affecting the seedling production effect. Dissection revealed that male prawns have vesicles near the hepatopancreas, and the hepatopancreas is atrophied and dark in color. However, current technical literature and related patents do not provide a method for repairing reddish male giant freshwater prawns or a technology for identifying them. Therefore, there is an urgent need for a method for repairing the reddish body color of male giant freshwater prawns and a device for identifying them, which can efficiently restore the physiological functions of the reddish prawns, thereby ensuring the seedling production rate and farming efficiency of giant freshwater prawns. Summary of the Invention
[0004] The purpose of this invention is to solve the problems in the background art and provide a method for repairing the reddish body color of male giant freshwater prawns.
[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A method for restoring the reddish body color of male giant freshwater prawns, characterized by comprising the following steps: S1. Preparation of repair feed: The basic raw materials of repair feed are prepared according to the weight proportions. After preparation, the raw materials are crushed, mixed, sieved, and granulated with water. The prepared repair feed is stored at room temperature away from light. S2. Prepare the feeding environment by covering the top of the breeding pond with shade boards, shade nets or other shade materials to create a low-light or no-light feeding environment to ensure the restoration effect. S3. Feeding management: Feed the shrimp regularly every day and adjust the amount of feed regularly according to the changes in the total weight of the shrimp in the pond. Feed continuously for a complete recovery cycle. S4. Post-feeding treatment: After feeding is completed, remove the shading devices above the breeding pond to restore normal breeding lighting conditions, and switch to regular feed for subsequent breeding.
[0006] Preferably, the basic raw materials of the remedial feed, by weight, are: 30-35 parts fish meal, 3-5 parts shrimp meal, 3-5 parts intestinal membrane powder, 1-2 parts chicken liver powder, 13-20 parts soybean meal, 5-6 parts cottonseed meal, 3-5 parts yeast extract, 20-22 parts high-gluten flour, 4-5 parts soybean oil, 1-2 parts phospholipid oil, 1-2 parts zeolite powder, 1-2 parts sodium alginate, 1-1.5 parts shrimp premix, 0.2-0.5 parts choline chloride, and 0.5-0.8 parts sea salt. The feed contains 0.5-1 part taurine; fish meal, shrimp meal, intestinal membrane powder, and chicken liver powder are protein sources, providing high-quality amino acids needed for shrimp body repair; soybean meal and cottonseed meal are plant protein supplements, reducing costs while balancing amino acid composition; high-gluten flour is a carbohydrate source, providing energy and acting as a granulation binder; soybean oil and phospholipid oil are fat sources, promoting the absorption of fat-soluble vitamins; shrimp premix contains vitamins to supplement trace elements; and taurine specifically improves the defects in the taurine metabolic pathway of red shrimp.
[0007] Preferably, the purity of the taurine active ingredient is not less than 99%. Studies on the antioxidant enzyme activity of hemolymph in male red-skinned giant freshwater prawns showed no significant difference in catalase (CAT) compared to normal male prawns (P<0.05), but the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were significantly reduced (P<0.05), while the malondialdehyde (MDA) content was significantly increased (P<0.05). This indicates that the antioxidant capacity of red-skinned prawns is significantly lower than that of normal male prawns, and the hepatopancreatic index (HSI) and gonadal index (GSI) of red-skinned prawns are significantly lower than those of normal male prawns (P<0.05). Simultaneously, the taurine content in the hemolymph was detected, and it was found that the taurine content in the serum, testes, muscles, and hepatopancreas of reddened male giant freshwater prawns was significantly lower than that of normal male giant freshwater prawns (P<0.05). Furthermore, metabolomics results showed that taurine is the main pathway affecting the difference in testicular metabolites between red and normal prawns, thus proving that the taurine metabolic pathway is an important metabolic pathway affecting the reddening of male prawns. Therefore, 99% pure taurine is used as the core repair component to specifically improve the defects in the taurine metabolic pathway of red prawns, restore their antioxidant capacity and hepatopancreas and gonadal function. Dark-light feeding can effectively avoid the impact of strong light on the shrimp's feeding and the stability of taurine.
[0008] Preferably, the preparation process of the repair feed in step S1 further includes the following steps: S11. Crushing and mixing: After accurately weighing the basic raw materials of the repair feed according to the weight proportions, put them into the crusher for crushing and mixing to ensure uniform physical mixing. S12. Sieving: The mixed materials are sieved through a 30-mesh sieve to ensure uniform material fineness, which facilitates subsequent feed preparation and improves feed digestibility and absorption. S13. Pelletizing: Add an appropriate amount of water powder to the sieved mixture, stir evenly, and then feed it into a pellet mill to make pellet feed with a suitable particle size. S14. Drying and storage: The prepared pelleted feed shall be dried and stored at room temperature. The entire drying and storage process must be carried out under light-protected conditions.
[0009] Preferably, in step S13, the amount of water added during pelleting is 12%-18% of the total weight of the raw materials, and the pellet size of the pelleted feed after pelleting is 1.5-2mm.
[0010] Preferably, step S3, feeding management, further includes the following steps: S31. Feeding frequency: Feed the repair feed twice a day, once in the morning and once in the afternoon. S32. Feeding amount: The amount of feed given each time is 2%-3% of the total weight of the giant freshwater prawns in the pond, and the feeding amount should be adjusted regularly according to the changes in the total weight of the giant freshwater prawns in the pond. S33. Feeding cycle: Continuously feed the repair feed for two weeks. S34. Post-feeding management: After feeding the recovery feed for two consecutive weeks, complete the full recovery cycle, restore normal lighting in the aquaculture pond, and switch to regular feed for continued aquaculture.
[0011] Preferably, the method for repairing reddish male giant freshwater prawns according to the present invention further includes the step of identifying and sorting reddish prawns, which is set before step S1. Specifically, a device for identifying reddish giant freshwater prawns is used, including a feeding unit, a visual recognition unit, a sorting execution unit, and a control unit. The feeding unit includes a slow-descent guide channel and a damping mechanism disposed within the slow-descent guide channel. The visual recognition unit is disposed at the outlet of the slow-descent guide channel and includes a dark box and a visual camera and a light source disposed at the top of the dark box. The sorting execution unit includes a first path, a second path, and a path switching mechanism. The damping mechanism is also disposed within the first path and the second path. The control unit has a built-in image processing algorithm and is electrically connected to the visual recognition unit and the sorting execution unit, respectively. The prawns to be detected can slowly and orderly enter the dark box in the visual recognition unit through the slow-descent guide channel of the feeding unit. In the dark box, the visual camera detects and determines whether it is a red prawn. The dark box is used for... To isolate the shrimp from external natural light fluctuations and provide a stable lighting and imaging environment, a visual camera captures images of the shrimp's body shape to determine if it is a red shrimp. After identification, the shrimp enters the sorting unit. The first path of the sorting unit is for normal shrimp, and the second path is for red shrimp. A path switching mechanism can switch between the two paths. When the control unit receives a visual recognition unit indicating a normal shrimp, the path switching mechanism switches to the first path for normal shrimp to pass through. When a red shrimp is identified, the path switching mechanism switches to the second path for red shrimp to pass through. A photoelectric sensor can also be installed at the entrance of the first path as a detection device to detect shrimp entering the sorting unit. Shrimp detected by the visual recognition unit are recorded sequentially by the control unit. When the photoelectric sensor detects a shrimp passing by, the control unit sends a signal to the sorting unit according to the recorded detection sequence, ensuring that shrimp of different colors are accurately sent to different paths, further guaranteeing the accuracy of shrimp color recognition and sorting.
[0012] Preferably, the inner wall of the slow-descent guide channel is smooth and has a certain angle. The damping mechanism array is arranged on the side walls on both sides of the slow-descent guide channel. The damping mechanism is a buffer structure such as damping fins or flexible bristles. A conveyor platform is also provided at the bottom of the dark box. One end of the conveyor platform is connected to the outlet of the slow-descent guide channel, and the other end is connected to the sorting execution unit. The slow-descent guide channel is set with an angle of 20-30°. Several damping mechanisms, such as damping fins, flexible brushes, or ropes, are arranged in a cross array on the side walls on both sides of the inner wall. This ensures that the shrimp can only slide down the slow-descent guide channel one by one, in an orderly and slow manner, onto the conveyor platform. This avoids collision damage and violent bouncing after stress on the shrimp. It ensures that the shrimp enters the detection area in the dark box with a stable posture under the damping effect, thereby improving the accuracy and effectiveness of the visual recognition unit.
[0013] Preferably, the first path includes a first sidewall and a second sidewall, and the second path includes a second sidewall and a third sidewall. The first and second paths share a single second sidewall, and their widths are equal. The movable block of the path switching mechanism passes through the first and second paths and is perpendicular to the sidewall. A sorting conveyor belt with the same direction as the movable block is provided, and a first vertical plate perpendicular to the sorting conveyor belt is provided below it. The movable block also has a second vertical plate parallel to the first vertical plate. The distance between the first and second vertical plates is equal to the width of the first and second paths. The length of the first vertical plate is less than the length of the second vertical plate, and the length of the sorting conveyor belt is greater than the width of the first and second paths. A drive cylinder is provided at the end of the movable block, and the movable block is fixedly connected to the output shaft of the drive cylinder. The first and second paths share a single second sidewall, and the movable block of the path switching mechanism can control the opening and closing of the first and second paths by extending and retracting. When the movable block extends towards the first path, the first vertical plate moves to the first side wall, and the second vertical plate moves to the second side wall. The sorting conveyor belt is located outside the first path, at which point the first path is open, and normal shrimp slide out of the first path. When a red shrimp is identified, the control unit controls the drive cylinder to retract the movable block towards the second path. The first vertical plate moves to the second side wall, and the second vertical plate moves to the third side wall. The sorting conveyor belt moves into the first path through retraction and cuts off the first path. At this point, the second path is open, and the red shrimp slides down the conveyor and is then transported to the first path. The shrimp are transported by the sorting conveyor belt on the first path and eventually slide down to the second path, where they slide out, completing the identification and selection of the shrimp. The vertical distance between the conveyor and the sorting conveyor belt does not exceed 30cm. The surface of the sorting conveyor belt is covered with a flexible material layer, so that the shrimp will not be damaged by falling due to height or material hardness when sliding onto the sorting conveyor belt. At the same time, damping mechanisms are also set on the inner walls on both sides of the first and second paths, so that the shrimp will slide out slowly and orderly after entering the first and second paths, avoiding the shrimp from falling and colliding.
[0014] Preferably, a first groove is formed on the first sidewall, a second groove is formed on the second sidewall, and a third groove is formed on the third sidewall. The lengths of the second and third grooves are equal and greater than the length of the first groove. When the output shaft of the drive cylinder extends and moves the movable block, the first groove coincides with the first vertical plate, the second groove coincides with the second vertical plate, and the first path is opened. When the output shaft of the drive cylinder retracts and moves the movable block, the second groove coincides with the first vertical plate, the third groove coincides with the second vertical plate, and the second path is opened. When the movable block extends towards the first path, the first vertical... The first vertical plate aligns perfectly with the first groove on the first side wall, and the second vertical plate aligns perfectly with the second groove on the second side wall. At this point, the first path is open and the second path is closed, allowing normal shrimp to pass through the first path and be selected. When the moving block retracts towards the second path, the first vertical plate aligns perfectly with the second groove on the second side wall, and the second vertical plate aligns perfectly with the third groove on the third side wall. At this point, the first path is interrupted by the sorting conveyor belt, and the first path is closed. The red shrimp that slides down from the conveyor platform will land on the sorting conveyor belt, which will then transport the red shrimp towards the second path. The red shrimp will eventually slide out of the second path, completing the identification and selection of normal and red shrimp.
[0015] In summary, the beneficial effects of this invention are as follows: 1. The present invention describes a method for repairing reddish male giant freshwater prawns. After repair by combining the repair feed with the repair method, the reddish male prawns show a significantly improved body color recovery rate, and their antioxidant capacity is restored to near the level of normal male prawns. The hepatopancreas and gonad indices are significantly improved, indicating that the health of the hepatopancreas and gonads has been restored. 2. The method for repairing the reddish body color of male giant freshwater prawns described in this invention can effectively solve the problem of reddish body color in giant freshwater prawns, provide high-quality male parents for seedling breeding, thus ensuring the smooth progress of the seedling breeding process, improving the egg-carrying rate of female prawns and the metamorphosis rate of seedlings, and bringing significant economic benefits to the giant freshwater prawn broodstock industry and seedling breeding. 3. The method for repairing reddish male giant freshwater prawns described in this invention achieves a fully automated process of identification and sorting through a red prawn identification device. The sorting efficiency and accuracy are far superior to manual sorting. At the same time, the setting of a slow-descent guide channel and a branching path greatly reduces the stress response and physical damage to the prawns. It is specifically designed for the physiological phenomenon of reddish body color in giant freshwater prawns, effectively ensuring the physiological basis for the subsequent repair of red prawns. Attached Figure Description
[0016] Figure 1 This is an image of a male giant freshwater prawn with a reddish body color. Figure 2This is a comparison chart of the catalase (CAT) and superoxide dismutase (SOD) activities of normal shrimp (N group) and reddened shrimp (R group); Figure 3 This is a comparison chart of glutathione peroxidase (GSH-Px) activity and malondialdehyde (MDA) content between normal shrimp (N group) and reddened shrimp (R group); Figure 4 This is a comparison chart of the hepatopancreatic index (HSI) and gonadal index (GSI) of normal shrimp (N group) and reddened shrimp (R group); Figure 5 This is a KEGG enrichment bubble diagram showing the differences in testicular metabolic pathways between normal shrimp (N group) and reddened shrimp (R group); Figure 6 This is a comparison chart of taurine content in serum and testicular tissue of normal shrimp (N group) and reddened shrimp (R group); Figure 7 This is a comparison chart of taurine content in the muscle and hepatopancreatic tissue of normal shrimp (N group) and reddened shrimp (R group); Figure 8 This is a schematic diagram of the overall structure of the reddish body color recognition device for giant freshwater prawns of the present invention; Figure 9 This is a schematic diagram of the feeding unit structure of the present invention; Figure 10 This is a schematic diagram of the visual recognition unit structure of the present invention; Figure 11 This is a schematic diagram of the first path switching structure of the sorting execution unit of the present invention; Figure 12 This is a schematic diagram of the second path switching structure of the sorting execution unit of the present invention.
[0017] The diagram is labeled as follows: 1-Feeding unit, 101-Slow-descent guide channel, 102-Damping mechanism, 2-Vision recognition unit, 201-Dark box, 202-Vision camera, 203-Light source, 204-Conveyor table, 3-Sorting execution unit, 301-First sidewall, 302-Second sidewall, 303-Third sidewall, 304-First trough, 305-Second trough, 306-Third trough, 310-First path, 320-Second path, 330-Path switching mechanism, 331-Moving block, 332-Sorting conveyor belt, 333-First vertical plate, 334-Second vertical plate, 335-Drive cylinder, 4-Control unit. Detailed Implementation
[0018] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.
[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] Example 1
[0021] according to Figure 1 As shown, in the farming practice of giant freshwater prawns, some male prawns exhibit overall reddening of their bodies, with the tail and cephalothorax showing a significantly higher degree of redness than other parts of the body. This is accompanied by a significant decrease in vitality and easy attachment of ciliates to the body surface, severely hindering normal mating behavior. Figures 2-7 As shown, the results of the researchers' study on the antioxidant enzyme activity of the hemolymph of male reddened giant freshwater prawns (P<0.05) indicate that... Figure 2 As shown, the catalase (CAT) activity in the reddened shrimp (group R) was not significantly different from that in the normal shrimp (group N), but the superoxide dismutase (SOD) activity was significantly reduced; Figure 3 As shown, the activity of glutathione peroxidase (GSH-Px) in the reddened shrimp (R group) was lower than that in the normal shrimp (N group), and the malondialdehyde (MDA) content in the reddened shrimp (R group) was significantly increased, indicating that the antioxidant capacity of the reddened shrimp was significantly lower than that of the normal male shrimp; Figure 4 As shown, the hepatopancreatic index (HSI) and gonadal index (GSI) of the reddened shrimp (group R) were significantly lower than those of the normal shrimp (group N); Figure 5 As shown, metabolomics results indicate that taurine is the main pathway influencing the differences in testicular metabolites between red shrimp and normal shrimp; Figure 6 , Figure 7 As shown, the taurine content in the serum testes, muscles, and hepatopancreas of reddened shrimp (Group R) was significantly lower than that of normal shrimp (Group N); the above data prove that the taurine metabolic pathway is an important metabolic pathway affecting the reddening of male shrimp.
[0022] A method for restoring the reddish body color of male giant freshwater prawns includes the following steps: Step 1: Identification and sorting of red shrimp: A device for identifying reddish-colored giant freshwater prawns is used to distinguish normal shrimp from those with reddish body color and to sort out the reddish shrimp. Step 2, Basic Feed Preparation: Prepare the raw materials according to the following weight proportions: 35 parts fish meal, 5 parts shrimp meal, 5 parts intestinal membrane powder, 2 parts chicken liver powder, 20 parts soybean meal, 6 parts cottonseed meal, 5 parts yeast paste, 22 parts high gluten flour, 5 parts soybean oil, 2 parts phospholipid oil, 2 parts zeolite powder, 2 parts sodium alginate, 1.5 parts shrimp premix, 0.5 parts choline chloride, and 0.8 parts sea crystal. Grind and mix the ingredients evenly. Step 3: Preparation of Repair Feed: Add 1 part of 99% pure taurine to the prepared basic feed and mix well to make repair feed; Step 4, Feed preparation: The crushed and mixed repair feed is sieved through a 30-mesh sieve and the sieve material is collected. The sieved repair feed is mixed with water at 18% of the total weight of the raw materials and then fed into a pellet mill to make pellet feed with a particle size of 2mm. After pelleting, it is dried at room temperature and stored away from light. Step 5: Selection of experimental red shrimp: Select 20 red shrimp with a body length of 12-14cm and a weight of 25-30g from the selected shrimp as experimental group 1, and feed them the repair feed containing taurine in this embodiment. Step 6, Feeding Management: Use a shaded feeding method, feed the shrimp twice a day, once in the morning and once in the afternoon, for a total of two weeks. Each feeding amount is 3% of the total body weight of the shrimp. Step 7: Repair Completed: After feeding continuously for two weeks, the entire repair cycle is completed. Observe and record the recovery of the shrimp's body color.
[0023] according to Figures 8-12 As shown, step one also includes a device for identifying the reddish body color of the giant freshwater prawn, comprising a feeding unit 1, a visual recognition unit 2, a sorting execution unit 3, and a control unit 4. The feeding unit 1 includes a slow-descent guide channel 101 and a damping mechanism 102 disposed within the slow-descent guide channel 101. The visual recognition unit 2 is located at the outlet of the slow-descent guide channel 101 and includes a dark box 201 and a visual camera 202 and a light source 203 disposed at the top of the dark box 201. The sorting execution unit 3 includes a first path 310, a second path 320, and a path switching mechanism 330. The damping mechanism 102 is also disposed within the first path 310 and the second path 320. The control unit 4 has a built-in image processing algorithm and is electrically connected to the visual recognition unit 2 and the sorting execution unit 3, respectively. The prawn to be detected can slowly pass through the slow-descent guide channel 101 of the feeding unit 1. The shrimp orderly enter the dark box 201 in the visual recognition unit 2. In the dark box 201, the visual camera 202 detects whether the shrimp is a red shrimp. The dark box 201 is used to isolate the shrimp from the interference of changes in natural light, provide stable lighting for the light source 203 and provide a stable imaging environment. The visual camera 202 is used to capture the image of the shrimp's body shape to determine whether it is a red shrimp. After recognition, the shrimp will enter the sorting execution unit 3. The first path 310 of the sorting execution unit 3 is the normal shrimp path, and the second path 320 is the red shrimp path. The path switching mechanism 330 can switch between the two different paths. When the control unit 4 receives the recognition from the visual recognition unit 2 as a normal shrimp, the path switching mechanism 330 switches to the first path 310 for normal shrimp to pass through. When the shrimp is recognized as a red shrimp, the path switching mechanism 330 switches to the second path 320 for red shrimp to pass through.
[0024] The inner wall of the slow-descent guide channel 101 is smooth and has a certain angle. The damping mechanism 102 is arrayed on the side walls on both sides of the slow-descent guide channel 101. The damping mechanism 102 is a buffer structure such as damping fins or flexible bristles. The bottom of the dark box 201 is also provided with a conveyor 204. One end of the conveyor 204 is connected to the outlet of the slow-descent guide channel 101, and the other end is connected to the sorting execution unit 3. Several damping mechanisms 102 are arranged in a cross array on the side walls on both sides of the inner wall of the slow-descent guide channel 101 to ensure that the shrimp can only slide down from the slow-descent guide channel 101 in an orderly and slow manner onto the conveyor 204, avoiding collision damage and violent bouncing after stress. This ensures that the shrimp enter the detection area in the dark box 201 in a stable posture under the damping action, thereby improving the accuracy and effectiveness of the visual recognition unit 2.
[0025] The first path 310 includes a first sidewall 301 and a second sidewall 302, and the second path 320 includes a second sidewall 302 and a third sidewall 303. The first path 310 and the second path 320 share a second sidewall 302, and the widths of the first path 310 and the second path 320 are equal. The movable block 331 of the path switching mechanism 330 passes through the first path 310 and the second path 320 and is perpendicular to the sidewall. A sorting conveyor belt 332 with the same direction as the movable block 331 is provided on the movable block 331, and a first vertical plate 333 perpendicular to the sorting conveyor belt 332 is provided below the sorting conveyor belt 332. The movable block 331 is also provided with a second vertical plate 334 parallel to the first vertical plate 333. The distance between plate 333 and the second vertical plate 334 is equal to the width of the first path 310 and the second path 320. The length of the first vertical plate 333 is less than the length of the second vertical plate 334. The length of the sorting conveyor belt 332 is greater than the width of the first path 310 and the second path 320. A drive cylinder 335 is also provided at the end of the movable block 331, and the movable block 331 is fixedly connected to the output shaft of the drive cylinder 335. The first path 310 and the second path 320 share a second sidewall 302. The movable block 331 of the path switching mechanism 330 can control the opening and closing of the first path 310 and the second path 320 by extension and retraction. When the movable block 331 moves towards the first path 310... When extended, the first vertical plate 333 moves to the first side wall 301, and the second vertical plate 334 moves to the second side wall 302. The sorting conveyor belt 332 is located outside the first path 310, at which time the first path 310 is open, and normal shrimp slide out from the first path. When a red shrimp is identified, the control unit 4 controls the drive cylinder 335 to drive the movable block 331 to retract towards the second path 320. The first vertical plate 333 moves to the second side wall 302, and the second vertical plate 334 moves to the third side wall 303. The sorting conveyor belt 332 moves into the first path 310 by retraction and cuts off the first path 310. At this time, the second path 320 is open, and the red shrimp slides down the conveyor 204 to the first path 310. The shrimp will be conveyed by the sorting conveyor belt 332 on the first path 310 and eventually slide down to the second path 320. The shrimp will then slide out through the second path 320, completing the identification and selection of the shrimp. The vertical distance between the conveyor platform 204 and the sorting conveyor belt 332 is no more than 30cm. The surface of the sorting conveyor belt 332 is covered with a flexible material layer, so that the shrimp will not be damaged by falling due to height or material hardness when it slides onto the sorting conveyor belt 332. At the same time, damping mechanisms 102 are also provided on the inner walls on both sides of the first path 310 and the second path 320, so that the shrimp will slide out slowly and orderly after entering the first path 310 and the second path 320, avoiding the shrimp from falling and colliding and being damaged.
[0026] A first groove 304 is formed on the first sidewall 301, a second groove 305 is formed on the second sidewall 302, and a third groove 306 is formed on the third sidewall 303. The lengths of the second groove 305 and the third groove 306 are equal and greater than the length of the first groove 304. When the output shaft of the drive cylinder 335 extends and moves the movable block 331, the first groove 304 coincides with the first vertical plate 333, the second groove 305 coincides with the second vertical plate 334, and the first path 310 opens. When the output shaft of the drive cylinder 335 retracts and moves the movable block 331, the second groove 305 coincides with the first vertical plate 333, the third groove 306 coincides with the second vertical plate 334, and the second path 320 opens. When the movable block 331 extends towards the first path 310, the first vertical plate 333 can be exactly aligned with the first groove 304 on the first sidewall 301. When the second vertical plate 334 coincides with the second groove 305 on the second side wall 302, the first path 310 opens and the second path 320 closes, allowing normal shrimp to pass through the first path 310 and be selected. When the movable block 331 retracts towards the second path 320, the first vertical plate 333 coincides with the second groove 305 on the second side wall 302, and the second vertical plate 334 coincides with the third groove 306 on the third side wall 303. At this time, the first path 310 is cut off by the sorting conveyor belt 332, and the first path 310 closes. The red shrimp that slides down from the conveyor 204 will land on the sorting conveyor belt 332, which will then transport the red shrimp towards the second path 320. The red shrimp will eventually slide out of the second path 320, completing the identification and selection of normal and red shrimp.
[0027] Example 2
[0028] The difference from Example 1 above is that a method for repairing the reddish body color of male giant freshwater prawns includes the following steps: Step 1: Identification and sorting of red shrimp: A device for identifying reddish-colored giant freshwater prawns is used to distinguish normal shrimp from those with reddish body color and to sort out the reddish shrimp. Step 2, Basic Feed Preparation: Prepare the raw materials according to the following weight proportions: 33 parts fish meal, 4 parts shrimp meal, 4 parts intestinal membrane powder, 1.5 parts chicken liver powder, 15 parts soybean meal, 5.5 parts cottonseed meal, 4 parts yeast paste, 21 parts high gluten flour, 4.5 parts soybean oil, 1.5 parts phospholipid oil, 1.5 parts zeolite powder, 1.5 parts sodium alginate, 1.3 parts shrimp premix, 0.3 parts choline chloride, and 0.6 parts sea crystal. Grind and mix the ingredients evenly. Step 3: Preparation of Repair Feed: Add 0.8 parts of 99% pure taurine to the prepared basic feed and mix well to make repair feed; Step 4, Feed preparation: The crushed and mixed repair feed is sieved through a 30-mesh sieve and the sieve material is collected. The sieved repair feed is mixed with water at 15% of the total weight of the raw materials and then fed into a pellet mill to make pellet feed with a particle size of 1.8mm. After pelleting, it is dried at room temperature and stored away from light. Step 5: Selection of experimental red shrimp: Select 20 red shrimp with a body length of 12-14cm and a weight of 25-30g from the selected shrimp as experimental group 2, and feed them the repair feed containing taurine in this embodiment. Step 6, Feeding Management: Use a shaded feeding method, feeding the shrimp twice a day, once in the morning and once in the afternoon, for a total of two weeks. Each feeding amount is 2.5% of the total body weight of the shrimp. Step 7: Repair Completed: After feeding continuously for two weeks, the entire repair cycle is completed. Observe and record the recovery of the shrimp's body color.
[0029] Example 3
[0030] The difference between this method and Example 1 and Example 2 is that a method for restoring the reddish body color of male giant freshwater prawns includes the following steps: Step 1: Identification and sorting of red shrimp: A device for identifying reddish-colored giant freshwater prawns is used to distinguish normal shrimp from those with reddish body color and to sort out the reddish shrimp. Step 2, Basic Feed Preparation: Prepare the raw materials according to the following weight proportions: 30 parts fish meal, 3 parts shrimp meal, 3 parts intestinal membrane powder, 1 part chicken liver powder, 13 parts soybean meal, 5 parts cottonseed meal, 3 parts yeast paste, 20 parts high gluten flour, 4 parts soybean oil, 1 part phospholipid oil, 1 part zeolite powder, 1 part sodium alginate, 1 part shrimp premix, 0.2 parts choline chloride, and 0.5 parts sea crystal. Grind and mix them evenly. Step 3: Preparation of Repair Feed: Add 0.5 parts of 99% pure taurine to the prepared basic feed and mix well to make repair feed; Step 4, Feed Preparation: The crushed and mixed repair feed is sieved through a 30-mesh sieve and the sieve material is collected. The sieved repair feed is mixed with water at 12% of the total weight of the raw materials and then fed into a pellet mill to make pellets with a particle size of 1.5mm. After pelleting, the pellets are dried at room temperature and stored away from light. Step 5: Selection of experimental red shrimp: Select 20 red shrimp with a body length of 12-14cm and a weight of 25-30g from the selected red shrimp as experimental group 3, and feed them the repair feed containing taurine in this embodiment. Step 6, Feeding Management: Use a shaded feeding method, feed the shrimp twice a day, once in the morning and once in the afternoon, for a total of two weeks. Each feeding amount is 2% of the total body weight of the shrimp. Step 7: Repair Completed: After feeding continuously for two weeks, the entire repair cycle is completed. Observe and record the recovery of the shrimp's body color.
[0031] Comparative Example 1: In the repair method of Example 1, taurine with a purity of 99% is not added in the third step of the repair feed preparation. Only the basic feed is used as the feeding feed. At the same time, the identification device for red body color of giant freshwater prawns of the present invention is not used for identification and sorting. Instead, 20 male giant freshwater prawns with a body length of 12-14cm and a weight of 25-30g with red body color are manually selected as the control group and fed with the basic feed.
[0032] Experimental results:
[0033] As can be seen from Examples 1, 2, 3 and Comparative Example 1, the main difference between the examples and the comparative examples is whether a certain amount of 99% pure taurine is added as a repair feed to the basic feed prepared in this invention. The experimental results show that the body color restoration rate of the red shrimp in Experiment 1 (fed using the repair feed method of Example 1) was 80%, the body color restoration rate of the red shrimp in Experiment 2 (fed using the repair feed method of Example 2) was 65%, and the body color restoration rate of the red shrimp in Experiment 3 (fed using the repair feed method of Example 3) was 50%. In contrast, the body color restoration rate of the control group (fed using the basic feed method of Comparative Example 1) was only 20%. Therefore, the repair method of this invention can effectively restore the reddish body color of male giant freshwater prawns.
Claims
1. A method for restoring the reddish body color of male giant freshwater prawns, characterized in that, Includes the following steps: S1. Preparation of repair feed: The basic raw materials of repair feed are prepared according to the weight proportions. After preparation, the raw materials are crushed, mixed, sieved, and granulated with water. The prepared repair feed is stored at room temperature away from light. S2. Prepare the feeding environment by covering the top of the breeding pond with shade boards, shade nets or other shade materials to create a low-light or no-light feeding environment to ensure the restoration effect. S3. Feeding management: Feed the shrimp regularly every day and adjust the amount of feed regularly according to the changes in the total weight of the shrimp in the pond. Feed continuously for a complete recovery cycle. S4. Post-feeding treatment: After feeding is completed, remove the shading devices above the breeding pond to restore normal breeding lighting conditions, and switch to regular feed for subsequent breeding.
2. The method for restoring the reddish body color of male giant freshwater prawns according to claim 1, characterized in that, The basic raw materials of the repair feed are as follows by weight: 30-35 parts fish meal, 3-5 parts shrimp meal, 3-5 parts intestinal membrane powder, 1-2 parts chicken liver powder, 13-20 parts soybean meal, 5-6 parts cottonseed meal, 3-5 parts yeast extract, 20-22 parts high gluten flour, 4-5 parts soybean oil, 1-2 parts phospholipid oil, 1-2 parts zeolite powder, 1-2 parts sodium alginate, 1-1.5 parts shrimp premix, 0.2-0.5 parts choline chloride, 0.5-0.8 parts sea salt crystal, and 0.5-1 part taurine.
3. The method for restoring the reddish body color of male giant freshwater prawns according to claim 2, characterized in that, The purity of the taurine is not less than 99%.
4. The method for restoring the reddish body color of male giant freshwater prawns according to claim 1, characterized in that, The preparation process of the repair feed in step S1 also includes the following steps: S11. Crushing and mixing: After accurately weighing the basic raw materials of the repair feed according to the weight proportions, put them into the crusher for crushing and mixing to ensure uniform physical mixing. S12. Sieving: The mixed materials are sieved through a 30-mesh sieve to ensure uniform material fineness, which facilitates subsequent feed preparation and improves feed digestibility and absorption. S13. Pelletizing: Add an appropriate amount of water powder to the sieved mixture, stir evenly, and then feed it into a pellet mill to make pellet feed with a suitable particle size. S14. Drying and storage: The prepared pelleted feed shall be dried and stored at room temperature. The entire drying and storage process must be carried out under light-protected conditions.
5. The method for restoring the reddish body color of male giant freshwater prawns according to claim 4, characterized in that, In step S13, during pelleting, the amount of water added is 12%-18% of the total weight of the raw materials, and the pellet size of the feed pellets after pelleting is 1.5-2mm.
6. The method for restoring the reddish body color of male giant freshwater prawns according to claim 1, characterized in that, The feeding management step S3 also includes the following steps: S31. Feeding frequency: Feed the repair feed twice a day, once in the morning and once in the afternoon. S32. Feeding amount: The amount of feed given each time is 2%-3% of the total weight of the giant freshwater prawns in the pond, and the feeding amount should be adjusted regularly according to the changes in the total weight of the giant freshwater prawns in the pond. S33. Feeding cycle: Continuously feed the repair feed for two weeks. S34. Post-feeding management: After feeding the recovery feed for two consecutive weeks, complete the full recovery cycle, restore normal lighting in the aquaculture pond, and switch to regular feed for continued aquaculture.
7. A method for restoring the reddish body color of male giant freshwater prawns according to any one of claims 1-6, characterized in that, The process also includes the identification and sorting of red shrimp, and is set before step S1. A device for identifying red-colored giant freshwater prawns is used. The device includes a feeding unit (1), a visual recognition unit (2), a sorting execution unit (3), and a control unit (4). The feeding unit (1) includes a slow-descent guide channel (101) and a damping mechanism (102) disposed in the slow-descent guide channel (101). The visual recognition unit (2) is disposed at the outlet of the slow-descent guide channel (101) and includes a dark box (2). 01) and a vision camera (202) and a light source (203) located at the top of the dark box (201); the sorting execution unit (3) includes a first path (310), a second path (320) and a path switching mechanism (330), and the damping mechanism (102) is also provided in the first path (310) and the second path (320). The control unit (4) has a built-in image processing algorithm and is electrically connected to the vision recognition unit (2) and the sorting execution unit (3) respectively.
8. The method for restoring the reddish body color of male giant freshwater prawns according to claim 7, characterized in that, The inner wall of the slow-descent guide channel (101) is smooth and has an inclination angle. The damping mechanism (102) array is arranged on the side walls on both sides of the slow-descent guide channel (101). The damping mechanism (102) is a damping fin or a flexible brush or other buffer structure. The bottom of the dark box (201) is also provided with a conveyor (204). One end of the conveyor (204) is connected to the outlet of the slow-descent guide channel (101), and the other end is connected to the sorting execution unit (3).
9. A method for restoring the reddish body color of male giant freshwater prawns according to claim 8, characterized in that, The first path (310) includes a first sidewall (301) and a second sidewall (302), and the second path (320) includes a second sidewall (302) and a third sidewall (303). The first path (310) and the second path (320) share a second sidewall (302), and the widths of the first path (310) and the second path (320) are equal. The movable block (331) of the path switching mechanism (330) passes through the first path (310) and the second path (320) and is perpendicular to the sidewall. A sorting conveyor belt (332) with the same direction as the movable block (331) is provided on the movable block (331), and a vertically perpendicular part of the sorting conveyor belt (332) is provided below the sorting conveyor belt (332). The first vertical plate (333) of the movable block (331) is provided with a second vertical plate (334) parallel to the first vertical plate (333); the distance between the first vertical plate (333) and the second vertical plate (334) is equal to the width of the first path (310) and the second path (320); the length of the first vertical plate (333) is smaller than the length of the second vertical plate (334); the length of the sorting conveyor belt (332) is larger than the width of the first path (310) and the second path (320); a drive cylinder (335) is provided at the end of the movable block (331); the movable block (331) is fixedly connected to the output shaft of the drive cylinder (335).
10. A method for restoring the reddish body color of male giant freshwater prawns according to claim 9, characterized in that, A first groove (304) is provided on the first sidewall (301), a second groove (305) is provided on the second sidewall (302), and a third groove (306) is provided on the third sidewall (303). The lengths of the second groove (305) and the third groove (306) are equal and greater than the length of the first groove (304). When the output shaft of the driving cylinder (335) extends and drives the movable block (331) to move, the first groove (304) coincides with the first vertical plate (333), the second groove (305) coincides with the second vertical plate (334), and the first path (310) opens. When the output shaft of the driving cylinder (335) retracts and drives the movable block (331) to move, the second groove (305) coincides with the first vertical plate (333), the third groove (306) coincides with the second vertical plate (334), and the second path (320) opens.