Wet compound feed for breeding juvenile pomfret as well as preparation method, feeding method and device of wet compound feed

Abstract

The invention belongs to the technical field of pomfret breeding, and particularly relates to wet compound feed for breeding juvenile pomfret and a preparation method, a feeding method and a device of the wet compound feed. The wet compound feed for breeding the juvenile pomfret is obtained by mixing powdery feed for the juvenile pomfret and water according to the mass ratio of 1: (1.2-1.5). The powdery feed for the juvenile pomfret is prepared from the following raw materials in parts by weight: 40-50 parts of white fish meal, 8-11 parts of mussel meat powder, 3-6 parts of enzymolysis squid paste, 6-9 parts of yolk powder, 4-8 parts of wheat protein powder, 10-17 parts of puffed corn flour, 4-7 parts of anchovy oil, 2-5 parts of schizochytrium limacinum powder, 0.4-1.0 part of a compound adhesive, 0.2-0.5 part of a compound enzyme preparation and 0.2-0.5 part of a compound microecological preparation. The feed is prepared from the following raw materials in parts by weight: 1.0-2.5 parts of a macroelement premix, 0.8-1.5 parts of a microelement premix and 0.4-1.0 part of a vitamin premix. The feed provided by the invention can solve the problems of low feeding rate, low survival rate and slow growth speed of the existing feed for feeding the pomfret in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of silver pomfret breeding, and particularly relates to a wet compound feed for silver pomfret juvenile breeding, a preparation method thereof, and a feeding method and device thereof. Background Art

[0002] Silver pomfret has an underdeveloped stomach, numerous pyloric caeca, a high intestinal index, and a unique esophageal lateral pouch structure, making it a carnivorous, omnivorous diet. In captivity, existing research suggests that silver pomfret prefers moist food.

[0003] Currently, silver pomfret are fed a flatfish feed on farm vessels, and in factory farming, they are periodically fed a combination of a combination feed or wet pellets. However, these feeds suffer from low survival rates and slow growth rates. The lack of specialized feeds tailored to the feeding habits of silver pomfret and designed for rapid growth is a major constraint on the expansion of silver pomfret aquaculture. Therefore, the development of new wet pellet feeds for silver pomfret juveniles is needed to address these issues. Summary of the Invention

[0004] To address the problems of low survival rate and slow growth rate of silver pomfret feeds currently used in the prior art, the present invention provides a wet compound feed for silver pomfret juvenile farming, as well as a preparation method, feeding method, and apparatus. To achieve the above objectives, the present invention employs the following technical solutions:

[0005] The first object of the present invention is to provide a wet compound feed for silver pomfret fry breeding, wherein the wet compound feed for silver pomfret fry breeding is obtained by mixing silver pomfret fry powdered feed and water in a mass ratio of 1:1.2-1.5.

[0006] The powdered feed for silver pomfret juveniles is prepared from the following raw materials in parts by weight: 40 to 50 parts of white fish meal, 8 to 11 parts of mussel meat powder, 3 to 6 parts of enzymatic squid paste, 6 to 9 parts of egg yolk powder, 4 to 8 parts of wheat protein powder, 10 to 17 parts of puffed corn flour, 4 to 7 parts of anchovy oil, 2 to 5 parts of schizochytrid powder, 0.4 to 1.0 parts of composite adhesive, 0.2 to 0.5 parts of composite enzyme preparation, 0.2 to 0.5 parts of composite probiotic preparation, 1.0 to 2.5 parts of major element premix, 0.8 to 1.5 parts of trace element premix and 0.4 to 1.0 parts of vitamin premix.

[0007] The composite adhesive is prepared from the following raw materials in parts by weight: 20 to 30 parts of guar gum, 20 to 30 parts of locust bean gum, and 40 to 60 parts of sodium polyacrylate.

[0008] The complex enzyme preparation is prepared from the following raw materials in parts by weight: 40 to 60 parts of neutral protease, 20 to 30 parts of lipase, and 20 to 30 parts of α-amylase.

[0009] The composite microecological preparation is prepared from the following raw materials in parts by weight: 20 to 40 parts of Cetacea, 20 to 30 parts of lactic acid bacteria, and 30 to 50 parts of Clostridium butyricum.

[0010] The wet compound feed for silver pomfret juveniles provided by the present invention is a specialized compound feed that is tailored to the silver pomfret's feeding habits and exhibits a rapid growth rate. The feed is prepared from whitefish meal, mussel meat meal, enzymatically hydrolyzed squid paste, egg yolk powder, wheat gluten powder, puffed corn flour, anchovy oil, schizochytrid algae powder, a composite adhesive, a composite enzyme preparation, a composite probiotic preparation, a macroelement premix, a trace element premix, and a vitamin premix. By rationally combining these various functional ingredients, the survival rate and growth rate of silver pomfret juveniles can be improved, thereby resolving the low survival rate and slow growth rate of existing feeds for silver pomfret.

[0011] Furthermore, the powdered feed for silver pomfret juveniles is prepared from the following raw materials in parts by weight: 43.5 to 45 parts of white fish meal, 9 to 10 parts of mussel meat powder, 4 to 5 parts of enzymatic squid paste, 7 to 8 parts of egg yolk powder, 6.4 to 6.7 parts of wheat protein powder, 12.5 to 15 parts of puffed corn flour, 5 to 6 parts of anchovy oil, 3 to 4 parts of schizochytrid powder, 0.6 to 0.8 parts of composite adhesive, 0.3 to 0.4 parts of composite enzyme preparation, 0.3 to 0.4 parts of composite probiotic preparation, 1.5 to 2.0 parts of major element premix, 1.0 to 1.2 parts of trace element premix and 0.6 to 0.8 parts of vitamin premix.

[0012] Furthermore, the major element premix is ​​prepared from the following raw materials in parts by weight: 20 to 30 parts of sodium dihydrogen phosphate, 20 to 30 parts of potassium dihydrogen phosphate, and 40 to 60 parts of calcium lactate.

[0013] Furthermore, the trace element premix is ​​a commercially available trace element premix for marine fish.

[0014] Furthermore, the vitamin premix is ​​a commercially available marine fish vitamin premix.

[0015] A second object of the present invention is to provide a method for preparing the wet compound feed for silver pomfret juvenile aquaculture, comprising the following steps: The powdered feed for juvenile silver pomfret is weighed, and water is added according to a mass ratio of the powdered feed for juvenile silver pomfret to the water of 1:1.2-1.5, and the mixture is mixed to obtain the wet compound feed for juvenile silver pomfret breeding.

[0016] Furthermore, the method for preparing the powdered feed for silver pomfret juveniles comprises the following steps: The composite adhesive, the composite enzyme preparation, the composite probiotic preparation, the macroelement premix, the trace element premix, and the vitamin premix are uniformly mixed; then, the mussel meat powder, the egg yolk powder, the wheat gluten powder, the puffed corn flour, the schizochytrium powder, and the whitefish meal are sequentially added and mixed uniformly to obtain a mixture; the mixture is then crushed and sieved, and the enzymatically hydrolyzed squid paste and the anchovy oil are added and mixed uniformly to obtain the powdered feed for silver pomfret juveniles.

[0017] The third object of the present invention is to provide a feeding device for the wet compound feed for silver pomfret juvenile farming, comprising a fixed base, the fixed base being arranged above the farming pond, the fixed base being provided with a flip assembly, the flip assembly being detachably connected to the side wall of a stainless steel transition tube, the open end of the stainless steel transition tube being detachably connected to a stainless steel feeding tube, the stainless steel feeding tube being used to store the wet compound feed for silver pomfret juvenile farming: the stainless steel feeding tube is also provided with a plurality of feeding holes.

[0018] A bait pushing component is detachably connected to the stainless steel transition tube, and the bait pushing component is movably connected to the stainless steel bait casting tube. The bait pushing component is horizontally arranged in the length direction of the stainless steel transition tube and the stainless steel bait casting tube.

[0019] The system also includes a controller, which is arranged above the breeding pond and electrically connected to the bait pushing component to control the bait pushing component to automatically move up and down in the stainless steel bait casting tube at a fixed time.

[0020] Furthermore, the bait pushing assembly includes a built-in push rod and a piston extrusion plate. The built-in push rod is detachably installed in the stainless steel transition tube, and one end is detachably connected to the piston extrusion plate. The piston extrusion plate is located in the stainless steel bait casting tube.

[0021] Furthermore, the built-in push rod is also connected to a servo motor, and the servo motor is electrically connected to the controller.

[0022] Furthermore, the flip assembly includes a hand-crank flip device and a rotating arm. The hand-crank flip device is installed on the fixed base, and the rotating arm is also connected to the hand-crank flip device; the rotating arm is detachably connected to the side wall of the stainless steel transition cylinder.

[0023] Furthermore, an automatic control circuit for controlling the start and stop of the servo motor is installed in the controller.

[0024] A fourth object of the present invention is to provide a feeding method using the feeding device, comprising the following steps: Adjust the hand-cranked flipping device, control the rotating arm to drive the stainless steel transition tube and the stainless steel feeding tube to be adjusted above the breeding pond, so that the open end of the stainless steel feeding tube faces upward, and place the wet compound feed for silver pomfret juvenile breeding into the stainless steel feeding tube; then flip the stainless steel transition tube and the stainless steel feeding tube by adjusting the hand-cranked flipping device, and transfer them to the water in the breeding pond.

[0025] The controller controls the servo motor to drive the built-in push rod to move, thereby driving the piston extrusion plate to automatically move up and down relative to the stainless steel feeding tube, thereby pushing the wet compound feed for silver pomfret juvenile farming to fall from the feeding hole on the stainless steel feeding tube into the breeding pond for the silver pomfret to eat.

[0026] Based on existing research, this study formulated different powdered feeds for silver pomfret juveniles. Through comparative experiments, the study screened for feed formulas and forms that improved silver pomfret survival and growth rates. A process for converting powdered feeds into wet feed for silver pomfret juveniles was developed, along with a wet feed production process. Furthermore, an automatic wet feed feeding machine was developed. The main research conclusions are as follows:

[0027] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a wet compound feed for juvenile silver pomfret farming. This feed is a specialized compound feed that is tailored to the feeding habits of silver pomfret and exhibits a rapid growth rate. It can be used for scaled-up silver pomfret farming. The wet compound feed for juvenile silver pomfret farming provided by the present invention is prepared from whitefish meal, mussel meat meal, enzymatically hydrolyzed squid paste, egg yolk powder, wheat gluten powder, puffed corn flour, anchovy oil, schizochytrium algae powder, a composite adhesive, a composite enzyme preparation, a composite probiotic preparation, a macroelement premix, a trace element premix, and a vitamin premix.

[0028] Among them, white fish meal is a high-quality marine protein source with low TVBN content. As the main protein source of silver pomfret fry feed, its rich nutritional composition can ensure the survival rate and growth performance of fry; mussel meat powder, enzymatic squid paste and egg yolk powder have unique fresh fragrance, which have special appetizing properties for silver pomfret fry and mainly play a role in promoting feeding. The combination of the three can significantly improve the feeding rate of fry and solve the problem that silver pomfret fry do not like to eat artificial compound feed; wheat protein powder and puffed corn flour have good viscosity and toughness at room temperature, ensuring that the wet feed made of powder has good stability in water; anchovy oil and schizochytrid powder provide highly unsaturated fatty acids for feed, especially DHA and EPA, which promote the survival rate and growth performance of fry; the composite adhesive is composed of guar gum, locust bean gum and sodium polyacrylate, all of which are room temperature adhesives, making the wet feed It forms a "gel-like" state in water, further reducing the water-dissolution rate of nutrients in wet feeds. The complex enzyme preparation, consisting of neutral protease, lipase, and α-amylase, primarily addresses the low digestion and absorption rate of silver pomfret after ingesting artificial formula feeds, improving the apparent digestibility of proteins, fats, and carbohydrates. The complex probiotic preparation, composed of three live bacteria: Cetaceae, Lactobacillus, and Clostridium butyricum, primarily addresses intestinal inflammation and ascites, common problems in juvenile silver pomfret, and can improve bloating. Silver pomfret scales are small and easily detached due to friction and handling. The macroelement premix, consisting of sodium dihydrogen phosphate, potassium dihydrogen phosphate, and calcium lactate, provides silver pomfret with more easily absorbed and utilized ionic calcium and phosphorus, thereby improving scale firmness and reducing scale shedding. The trace element and vitamin premix provides the silver pomfret with the trace elements and vitamins necessary for growth. The rational combination of the above functional raw materials can improve the survival rate and growth rate of silver pomfret fry, thereby solving the problems of low survival rate and slow growth rate of the feeds currently used to feed silver pomfret in the prior art.

[0029] 2. This study designed four powdered experimental feeds (S1-S4) for silver pomfret fry and compared them with the turbot fry feed currently used in silver pomfret production. A four-week comparative farming experiment was conducted. The results showed that the four powdered feeds had a high survival rate, rapid growth rate, and low feed conversion coefficient (1.38-1.51) for silver pomfret fry. The feed cost per kg of silver pomfret was low (29.82-37.09 yuan / kg), meeting the needs of silver pomfret farming.

[0030] 3. The present invention also provides a method for preparing a wet compound feed for silver pomfret fry farming, and develops a method for making a wet mass from powdered silver pomfret fry feed. Adding too much or too little water to the powdered silver pomfret fry feed results in poor water stability in the resulting wet mass. When the ratio of powdered silver pomfret fry feed to water is 1:1.2-1.5, the resulting wet mass exhibits good water stability. The preparation method is as follows: weigh a certain amount of powdered silver pomfret fry feed and pour it into any mixing equipment, such as a mixer, dough mixer, or small juicer. Add fresh water at a ratio of powdered silver pomfret fry feed to water of 1:1.2-1.5, and stir for 5-10 minutes to produce a wet mass with good water stability.

[0031] 4. The present invention also provides a feeding device for wet compound feed for silver pomfret juveniles, which can meet the silver pomfret's feeding needs for wet pellets. The wet feed automatic feeding device consists of a fixed base, a controller, and a stainless steel feeding drum. The fixed base secures the automatic feeding device to the wall of the aquaculture pond. The controller is used to set and adjust feeding parameters. The stainless steel feeding drum stores the wet pellets. A built-in push rod slowly feeds the pellets, which are squeezed out through the small holes in the feeding drum, making them easier for the fry to consume and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the homemade powdered compound feed (powdered feed for silver pomfret juveniles) in the present invention.

[0033] Figure 2 It is the silver pomfret juvenile in the present invention.

[0034] Figure 3 The invention discloses a processing technology for preparing a wet feed (a wet compound feed for silver pomfret juvenile breeding) from the powdered feed of the silver pomfret juvenile in the present invention.

[0035] Figure 4 This is a physical picture of the silver pomfret breeding and feeding device of the present invention, which includes a fixed base, a controller, and a stainless steel feeding tube.

[0036] Figure 5 It is a controller of the silver pomfret breeding and feeding device of the present invention.

[0037] Figure 6 This is the interface of the controller of the silver pomfret breeding and feeding device of the present invention - the inching interface.

[0038] Figure 7 This is the interface of the controller of the silver pomfret breeding and feeding device of the present invention - the feeding interface.

[0039] Figure 8 This is the interface - feeding reset of the controller of the silver pomfret breeding and feeding device of the present invention.

[0040] Figure 9 This is the interface of the controller of the silver pomfret breeding and feeding device of the present invention - feeding parameters.

[0041] Figure 10 The figure is a schematic diagram of the overall structure of the silver pomfret breeding and feeding device of the present invention.

[0042] Figure 11 This is a structural diagram of the stainless steel bait casting tube and the stainless steel transition tube in the present invention; wherein, Figure 11 A in FIG. 1 is a structural diagram of a stainless steel transition tube. Figure 11 B is a structural diagram of a stainless steel bait casting tube.

[0043] Figure 12 This is a structural diagram of the servo motor, stainless steel transition tube, built-in push rod, piston extrusion plate and stainless steel bait casting tube in the present invention.

[0044] In the figure: 1-fixed base, 2-stainless steel bait casting tube, 201-baiting hole, 3-stainless steel transition tube, 4-controller, 5-flipping assembly, 501-hand-cranked flipping device, 502-rotating arm, 6-bait pushing assembly, 601-built-in push rod, 602-piston extrusion plate and 7-servo motor. DETAILED DESCRIPTION

[0045] The present invention will be described in detail below with reference to the accompanying drawings and specific examples, but they should not be construed as limiting the present invention. Unless otherwise specified, the technical means used in the following examples are conventional means well known to those skilled in the art, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial sources.

[0046] Example 1: Preparation of wet compound feed for silver pomfret juvenile aquaculture 1. Feed formula The wet compound feed for silver pomfret fry farming is obtained by mixing silver pomfret fry powdered feed and water in a mass ratio of 1:1.2~1.5.

[0047] Among them, a total of 4 kinds of powdered feeds for silver pomfret juveniles (S1~S4) were designed, and the feed formulas are shown in Table 1.

[0048] Table 1 Formula and nutritional composition of powdered feed for silver pomfret juveniles (% wet basis) Note: “-” indicates unknown composition.

[0049] Among them, the white fish meal in Table 1 was purchased from Qingdao Weilanlongchu Biotechnology Co., Ltd.

[0050] The mussel meat powder in Table 1 was purchased from Qingdao Haijie Aquatic Technology Co., Ltd.

[0051] The enzymatic hydrolyzed squid paste in Table 1 was purchased from Qingdao Shenghejing Biotechnology Co., Ltd.

[0052] The egg yolk powder in Table 1 was purchased from Bozhou Haichuan Egg Products Co., Ltd.

[0053] The wheat protein powder in Table 1 was purchased from Qingdao Qihao Nutrition Technology Co., Ltd.

[0054] The puffed corn flour in Table 1 was purchased from Henan Pufan Puffed Feed Technology Co., Ltd.

[0055] The anchovy oil in Table 1 was purchased from Rongcheng Haoshun Biotechnology Co., Ltd.

[0056] The Schizochytrium powder in Table 1 was purchased from Qingdao Qingquangang Bioengineering Co., Ltd.

[0057] The trace element premix in Table 1 is a commercially available trace element premix for marine fish, which was purchased from Qingdao Master Biotechnology Co., Ltd.

[0058] The vitamin premix in Table 1 is a commercially available marine fish vitamin premix, which was purchased from Qingdao Master Biotechnology Co., Ltd.

[0059] The formula of the compound premix in the feed formula shown in Table 1 is shown in Table 2.

[0060] Table 2 Formula of compound premix in powdered feed for silver pomfret juveniles (% wet basis) 2. Processing technology (preparation method) of wet compound feed for silver pomfret juvenile farming The powdered raw materials were mixed evenly according to the formula ratio, crushed by a universal grinder through an 80-mesh screen, and then added with enzymatic squid paste and anchovy oil and stirred evenly with a blender to obtain powdered feed for silver pomfret juveniles ( Figure 1 ). The powdered raw materials refer to the raw materials for preparing powdered feed for silver pomfret juveniles, i.e., the raw materials shown in Table 1.

[0061] The prepared powdered feed for silver pomfret juveniles was placed in a black plastic bag and stored in a refrigerator at -20°C. The powdered feed for silver pomfret juveniles was suitable for 3g to 50g silver pomfret juveniles.

[0062] It should be noted that the wet compound feed for silver pomfret juvenile aquaculture is prepared from powdered silver pomfret feed just before use, and is then fed using a wet feed automatic feeding machine. The method for preparing the wet compound feed for silver pomfret juvenile aquaculture comprises the following steps:

[0063] Water was added to the powdered feed of silver pomfret juveniles in groups S1 to S4 at a mass ratio of 1:1.2, 1:1.3, 1:1.4, and 1:1.5 to water, and the mixture was stirred evenly to obtain the wet compound feed for silver pomfret juvenile farming.

[0064] 3. Breeding experiment Aquaculture experiments were conducted in an underground marine aquaculture system in Qingdao, Shandong Province. The aquaculture container was a cement tank (3m × 2m × 1m), with a water depth of 60cm, a salinity of 25, and a water temperature of 25°C. Daily water exchange was maintained at a rate of at least 50% (v / v).

[0065] The fry species are artificially bred silver pomfret fry ( Figure 2 ), sourced from Jiangsu Marine Fisheries Research Institute.

[0066] Before the formal experiment, healthy fish with an average initial weight of 4.20 g were randomly assigned to pools, with 150 fish per pool fed S1–S4 and a commercial turbot diet (silver pomfret diet, which was unavailable, served as a control diet). Each diet was fed to satiation twice daily (8:00 and 17:00) in triplicate. The pelleted diet was slowly distributed manually, while the powdered diet was fed as a wet pellet. The experimental period lasted four weeks.

[0067] Among them, the pellet feed group, as the control feed group, refers to the fish fed with commercial turbot feed; the powder feed group refers to the fish fed with S1 to S4.

[0068] After the experiment, the number of fish in each tank was counted, the average weight of the fish was measured, and the survival rate, weight gain rate, specific growth rate, daily feed intake, feed coefficient, and feed cost per kg of fish were calculated. The specific calculation formula is as follows:

[0069] Weight gain rate = 100×(W t -W0) / W0; In the above formula, the unit of weight gain rate is %; W0 is the initial average weight of juvenile fish, in g, W t is the final average body weight, in g; t is the number of experimental days; Specific growth rate = (LnW t –LnW0)×100 / t; In the above formula, the unit of specific growth rate is % / d; W0 is the initial average weight of juveniles, in g, and W t is the final average body weight, in g; t is the number of experimental days; Survival rate = (final number of fish - initial number of fish) / initial number of fish × 100; In the above formula, the unit of survival rate is %; Daily food intake (g / tail / day) = W f / final number of fish / t; In the above formula, the unit of daily food intake is g / tail / day; W f is the amount of feed ingested by fish, in g; Feed coefficient = W f / (W t -W0); In the above formula, W0 is the initial average weight of juvenile fish, in g, W t is the final average body weight, in g; W f is the amount of feed consumed by fish, in g; t is the number of experimental days; The feed cost of raising 1kg of fish = feed coefficient × feed unit price.

[0070] The results are shown in Table 3.

[0071] Table 3 Comparison of growth performance of five feeds As shown in Table 3, the survival rate, weight gain rate, specific growth rate and daily feed intake of silver pomfret fry in the S1-S4 powder feed groups were higher than those in the control feed group (commercially available turbot fry feed), and the feed coefficient and feed cost per kg of fish were lower than those in the control group.

[0072] According to the observed feeding habits, silver pomfret prefers to eat wet pellet feed made from powdered feed of silver pomfret juveniles (wet compound feed for silver pomfret juvenile farming).

[0073] 4. Process and usage of powdered feed for silver pomfret juveniles to make wet feed Repeated experiments revealed that adding too much or too little water to the powdered silver pomfret feed used in the present invention resulted in poor water stability in the resulting wet mass (wet compound feed for silver pomfret juveniles). A wet mass (wet compound feed for silver pomfret juveniles) with a ratio of 1:1.4 exhibited optimal water stability. The method for preparing a wet mass (wet compound feed for silver pomfret juveniles) from the powdered silver pomfret feed is as follows:

[0074] Weigh the powdered feed of silver pomfret fry and pour it into the mixer. Add fresh water according to the ratio of powdered feed of silver pomfret fry: water = 1:1.4, stir for 8 minutes, and then make wet mass ( Figure 3 The wet mass is pasted on the wet feed automatic feeding machine for feeding.

[0075] Example 2: Feeding device and feeding method of wet compound feed for silver pomfret juvenile farming The present invention provides a feeding device for wet compound feed for silver pomfret juveniles based on the wet compound feed for silver pomfret juveniles. Figure 4 and Figures 10 to 12As shown), it includes a fixed base 1, which is set on the wall above the breeding pond. The function of the fixed base 1 is to fix the device on the wall of the breeding pond.

[0076] A tilting assembly 5 is mounted on the fixed base 1 and is removably connected vertically to the sidewall of the stainless steel feeding tube 2 via a snap ring. The stainless steel feeding tube 2 is removably connected (snapped) to the open end of the stainless steel transition tube 3. The stainless steel feeding tube 2 is used to store wet compound feed for silver pomfret juveniles. The tilting assembly 5 can be used to adjust the height of the stainless steel transition tube 3 and the feeding tube 2, as well as to adjust the vertical position of the stainless steel transition tube 3 and the feeding tube 2.

[0077] Both ends of the stainless steel feeding tube 2 and the stainless steel transition tube 3 are open. Moist compound feed for silver pomfret juveniles can be placed into the stainless steel feeding tube 2. One open end of the stainless steel feeding tube 2 is equipped with a tube cover and a silicone rubber sealing ring. The other open end of the stainless steel feeding tube 2 is clipped onto the stainless steel transition tube 3. A flip assembly 5 is detachably connected to the side wall of the stainless steel transition tube 3 via a snap ring. The flip assembly 5 is, in turn, connected to the fixed base 1. During use, the stainless steel transition tube 3 and the stainless steel feeding tube 2 are adjusted to the top of the breeding pond by means of the turning assembly 5, so that an open end of the stainless steel feeding tube 2 provided with the tube cover and the silicone rubber sealing ring faces upward (the stainless steel feeding tube 2 is located above the stainless steel transition tube 3). The tube cover provided thereon is opened, and then a wet compound feed for silver pomfret fry breeding is placed into the stainless steel feeding tube 2. The tube cover is then closed on the open end, and the connection between the open end and the tube cover is sealed with the silicone rubber sealing ring. The stainless steel feeding tube 2 and the stainless steel transition tube 3 are then turned over at their upper and lower ends by means of the turning assembly 5 (the stainless steel transition tube 3 is located above the stainless steel feeding tube 2), and are adjusted to a position in the water of the breeding pond suitable for feeding the silver pomfret fry.

[0078] The stainless steel feeding tube 2 is provided with a plurality of feeding holes 201. A bait pushing assembly 6 is removably (and snap-on) connected to the stainless steel transition tube 3. This assembly extends through the stainless steel feeding tube 2 at one end, distal from the open end with the tube cover and silicone rubber sealing ring, and is movably connected to the stainless steel feeding tube 2. The assembly 6 is arranged horizontally along the length of the stainless steel transition tube 3 and the stainless steel feeding tube 2. As the assembly 6 moves up and down within the stainless steel feeding tube 2, it pushes the wet compound feed for silver pomfret juveniles placed within the feeding tube 2. The compound feed is then extruded through the feeding holes 201 of the stainless steel feeding tube 2 into the breeding pond, achieving timed automatic feeding and stopping for the silver pomfret.

[0079] It should be noted that a sealing sleeve is provided at the connection between the bait pushing assembly 6 and the open end of the stainless steel feeding tube 2 to seal the connection and prevent the wet compound feed for silver pomfret juveniles from leaking out of the stainless steel feeding tube 2. The inner diameter of the stainless steel feeding tube 2 is larger than that of the stainless steel transition tube 3.

[0080] The system further includes a controller 4, which is mounted on a turning assembly 5 above the aquaculture pond and electrically connected to a bait pushing assembly 6, which controls the bait pushing assembly 6 to automatically and regularly move up and down within the stainless steel feeding tube 2. The controller 4 controls the bait pushing assembly 6 to automatically and regularly move up and down within the stainless steel feeding tube 2, pushing the wet compound feed for silver pomfret juvenile aquaculture placed within the stainless steel feeding tube 2. The compound feed is then extruded through a feeding hole 201 of the stainless steel feeding tube 2 into the aquaculture pond, achieving regular and automatic feeding and stopping of the feed for the silver pomfret to consume.

[0081] Furthermore, the bait pushing assembly 6 includes an internal push rod 601 and a piston extrusion plate 602. The internal push rod 601 is detachably mounted (snaps) within the stainless steel transition tube 3, and one end of the push rod is detachably connected (via a threaded connection) to the piston extrusion plate 602. The piston extrusion plate 602 is located within the stainless steel bait casting tube 2 and can move along its length within the stainless steel bait casting tube 2. The internal push rod 601 can move along its length within the stainless steel transition tube 3 and the stainless steel bait casting tube 2.

[0082] Furthermore, the built-in push rod 601 is connected to a servo motor 7, which is electrically connected to the controller 4. The controller 4 is provided with a switch for controlling the operation of the servo motor 7. The controller 4 regulates the operation of the servo motor 7 by controlling the frequency of the servo motor 7. The servo motor drives the built-in push rod 601 to move along the length direction of the stainless steel transition tube 3 and the stainless steel feeding tube 2, thereby driving the piston extrusion plate 602 to automatically move up and down along the length direction of the stainless steel feeding tube 2 at a regular time, pushing the wet compound feed for silver pomfret juvenile farming placed in the stainless steel feeding tube 2. The silver pomfret farming compound feed is then squeezed into the breeding pond through the feeding hole 201 of the stainless steel feeding tube 2, realizing regular automatic feeding or regular automatic stopping of feeding for the silver pomfret to eat.

[0083] Furthermore, the flip assembly 5 includes a hand-cranked flipping device 501 and a rotating arm 502. The hand-cranked flipping device 501 is mounted on the fixed base 1 and is further connected to the rotating arm 502. The rotating arm 502 is detachably connected to the side wall of the stainless steel transition tube 3 via a snap ring. The hand-cranked flipping device 501 includes a rotating gearbox and a gearbox handle. Manually rotating the gearbox handle rotates the rotating arm 502, which in turn causes the stainless steel transition tube 3 and the stainless steel bait casting tube 2 to flip at their upper and lower ends.

[0084] Furthermore, the controller 4 is equipped with an automatic control circuit that activates and deactivates the servo motor 7. Through the automatic control circuit 401, the servo motor 7 controls the movement of the built-in push rod 601, which in turn drives the piston squeeze plate 602 to automatically and regularly move up and down within the stainless steel feeding cylinder 2. This in turn forces the wet compound feed for silver pomfret juvenile farming to drop from the feeding hole 201 in the stainless steel feeding cylinder 2 into the breeding pond for consumption by the silver pomfret.

[0085] Among them, the structure of the controller 4 is as follows Figure 5 As shown. Controller 4 is used to set and adjust feeding parameters. Controller 4 consists of an integrated PLC programmable controller, a human-machine interface screen, a servo motor controller, a leakage protection switch and a DC24V power supply module. The integrated PLC programmable controller sets parameters such as feeding speed, feeding time, inching speed, current feeding position, current position and feeding times through the window of the human-machine interface screen; the synchronously set control buttons include feeding start SB1, feeding stop SB2 and feeding reset SB3; the initial position magnetic induction sensor CK1 and the terminal position magnetic induction sensor CK2 form the upper limit and lower limit. After the system starts feeding by pressing SB1, the PLC sends a signal to the servo controller, outputs power to the servo motor coil K4 in the corresponding rotation direction, drives feeding or recovery, and presses feeding stop SB2 during the process to stop the system. The leakage protection switch ensures system safety, and the DC24V power supply module provides PLC working power and drives the servo motor 7 to work.

[0086] The interface of the controller 4 is provided with four interfaces, namely the inching interface, feeding interface, reset interface and feeding parameter interface. Figures 6 to 9 shown.

[0087] (1) Jog interface ( Figure 6 ): Feeding inching speed: push rod running speed.

[0088] Current feeding position: the current position of the piston squeeze plate 602.

[0089] This screen displays the current position of the piston squeeze plate 602 in pulses. Click the yellow dialog box below the jog speed to set the jog speed. Pressing JOG- moves the push rod backward (retracts it), and pressing JOG+ moves it forward (extends it).

[0090] (2) Feeding interface ( Figure 7 ): Current position: The current position of the piston squeeze plate 602.

[0091] Current times: The number of reciprocating cycles (changeable).

[0092] This interface displays feeding-related parameters. The Current Position indicates the current position of the piston plate 602, and the Current Number indicates the number of cycles in the current automatic feeding program (which can be modified). Pressing the Feed button causes the push rod to begin operating according to the programmed program, and the position in the Current Position dialog box begins to change. When it reaches the specified position, the push rod automatically retracts, and a cycle is completed when it stops at the specified position. If the Stop button is pressed during a feeding program, the current feeding program will be terminated immediately, and the push rod will not automatically retract when it stops. Pressing the Feed button again will cause the push rod to continue feeding at the current position until it reaches the preset position.

[0093] (3) Feeding reset ( Figure 8 ): Current position: The current position of the piston squeeze plate 602.

[0094] Reset mode: 0 = manual reset.

[0095] Reset speed: reset speed, unit is pps (pulse).

[0096] This screen displays the manual reset function; the current position indicates the position of the piston squeeze plate 602. A reset mode of 0 indicates manual reset. The reset speed represents the preset reset speed, which can be adjusted by clicking on the following dialog box. Clicking the reset button initiates the reset process, resetting to the preset reset position. Clicking the stop button stops the push rod. Clicking the reset button again causes the push rod to reset again until it reaches the preset position, where it stops.

[0097] (4) Feeding parameters ( Figure 9 ): Position 0: Set the push rod extension position (510,000 pulses have been preset).

[0098] Position 1: Set the push rod reset position (the position after the piston squeeze plate 602 is retracted).

[0099] Time: Set the time required for the push rod to reach the specified position (the longer the time, the slower the push rod speed).

[0100] Number of positioning times: the number of times the push rod stops during the extension movement.

[0101] Acceleration time: acceleration time and deceleration time. The larger the value, the slower the speed.

[0102] Positioning delay: The time the push rod stops after reaching the specified position (the push rod automatically resets after the stop time).

[0103] Feeding end: Sound and light alarm device, when the push rod returns to the predetermined position, the secondary alarm flashes red and alarms.

[0104] Power switch: System power knob.

[0105] Feeding end point: Sound and light alarm device, when the push rod is extended to the predetermined position, the secondary alarm flashes red and alarms.

[0106] Feeding start: After pressing, the feeding program starts, and the piston squeeze plate 602 runs according to the preset program.

[0107] Feeding stop: Press the rear push rod to stop the operation immediately.

[0108] Feeding reset: Press the rear push rod to start the reset process.

[0109] (5) Instructions for adding materials: Clamp the fixing base firmly on the wall of the breeding pond, shake the stainless steel feeding tube 2 and flip the gearbox handle to raise and lower the feeding device. Use your hands to assist the rotating arm to raise and lower it evenly.

[0110] To adjust the position of the stainless steel bait casting tube 2 in the water, you can loosen the stainless steel bait casting tube 2 fastening ring on the rotating arm, move the push rod fixing tube, and then tighten the fixing bolt.

[0111] Filling the bait: When the stainless steel bait casting tube 2 is raised to the water surface without dripping, rotate it to the loading position, remove the end cover, fill it with a certain amount of wet bait, and fix the end cover.

[0112] Feeding: Set the feeding advancement time according to the feeding amount to ensure that the extruded bait can be eaten in time (the specific parameters depend on the on-site conditions), and rotate the system to the loading position.

[0113] Start the system to start feeding. When the feeding time is up or the piston squeeze plate 602 is pushed to the limit, the system automatically returns to the initial state position, and a feeding cycle ends.

[0114] (6) Precautions for use: This device is also equipped with a leakage protector. The test button should be pressed regularly to check whether the leakage protection function is normal.

[0115] Prevent the system from falling into water and prevent the electrical parts from being flushed with water.

[0116] There are flip reducer and rocker device to prevent pinching.

[0117] After feeding is completed, the stainless steel bait tube 2 needs to be removed and cleaned.

[0118] The method of using the feeding device for the wet compound feed for silver pomfret juvenile aquaculture is as follows: (1) After the device is powered on, set controller 4 so that the push rod is copied to the "0" state and the feeding parameters are set and saved.

[0119] (2) Filling: Use the hand-cranked turning device 5 to adjust the stainless steel feeding tube 2 to the top of the breeding pond, so that the open end of the stainless steel feeding tube 2 faces upwards, remove the quick-release clamp clip and the tube cover and silicone rubber sealing ring at the open end of the stainless steel feeding tube 2, and use a shovel to fill the wet compound feed for silver pomfret juvenile breeding into the stainless steel feeding tube 2, compact it and make sure that there is no suspended feed bridging in the stainless steel feeding tube 2, put on the sealing ring, cover the tube cover and fix the quick-release clamp.

[0120] (3) The stainless steel feeding tube 2 is put into operation: the stainless steel feeding tube 2 is turned over by rotating the gearbox handle 502, so that the stainless steel feeding tube 2 rotates 180 degrees and the device is rotated to the feeding position state. The stainless steel feeding tube 2 enters below the water body of the silver pomfret breeding pond. If the stainless steel feeding tube 2 exceeds or falls below the feeding water level, the fastening clip connecting the base connecting rod 501 and the tube wall of the stainless steel feeding tube 2 can be loosened to adjust the height of the stainless steel feeding tube 2. After the height of the stainless steel feeding tube 2 is set, tighten the fixing bolt.

[0121] (4) Feeding: Press the "Feeding Start" button on the controller 4 to start the feeding device and feed according to the set parameters.

[0122] (5) End of feeding: When feeding is finished, the “End of feeding” indicator light on the controller panel lights up, the buzzer sounds, and the power is cut off.

[0123] (6) Cleaning of the stainless steel feeding tube 2: Rotate the stainless steel feeding tube 2 and flip the gearbox handle 502, reverse the stainless steel feeding tube 2 to the loading position, remove the cover of the stainless steel feeding tube 2, remove the sealing ring, remove the fastening clip connecting the stainless steel feeding tube 2 and the wall of the stainless steel feeding tube 2, gently remove the stainless steel feeding tube 2, and use tap water to rinse the residual feed on the inner wall of the stainless steel feeding tube 2. The entire feeding process is completed.

[0124] It should be noted that when the present invention involves a numerical range, it should be understood that both endpoints of each numerical range and any value between the two endpoints can be selected. To avoid redundancy, the present invention describes a preferred embodiment.

[0125] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once the basic inventive concepts become known, and all such changes and modifications fall within the scope of the present invention.

Claims

1. A wet compound feed for silver pomfret juvenile aquaculture, characterized in that: The wet compound feed for silver pomfret fry breeding is obtained by mixing silver pomfret fry powdered feed and water in a mass ratio of 1:1.2-1.5; The powdered feed for silver pomfret juveniles is prepared from the following raw materials in parts by weight: 40-50 parts of white fish meal, 8-11 parts of mussel meat meal, 3-6 parts of enzymatic squid paste, 6-9 parts of egg yolk powder, 4-8 parts of wheat gluten powder, 10-17 parts of puffed corn flour, 4-7 parts of anchovy oil, 2-5 parts of schizochytrium powder, 0.4-1.0 parts of composite adhesive, 0.2-0.5 parts of composite enzyme preparation, 0.2-0.5 parts of composite probiotic preparation, 1.0-2.5 parts of macroelement premix, 0.8-1.5 parts of trace element premix, and 0.4-1.0 parts of vitamin premix; The composite adhesive is prepared from the following raw materials in parts by weight: 20 to 30 parts of guar gum, 20 to 30 parts of locust bean gum and 40 to 60 parts of sodium polyacrylate; The composite enzyme preparation is prepared from the following raw materials in parts by weight: 40 to 60 parts of neutral protease, 20 to 30 parts of lipase, and 20 to 30 parts of α-amylase; The composite microecological preparation is prepared from the following raw materials in parts by weight: 20 to 40 parts of Cetacea, 20 to 30 parts of lactic acid bacteria, and 30 to 50 parts of Clostridium butyricum.

2. The wet compound feed for silver pomfret juvenile breeding according to claim 1, wherein The powdered feed for silver pomfret juveniles is prepared from the following raw materials in parts by weight: 43.5 to 45 parts of white fish meal, 9 to 10 parts of mussel meat powder, 4 to 5 parts of enzymatic squid paste, 7 to 8 parts of egg yolk powder, 6.4 to 6.7 parts of wheat protein powder, 12.5 to 15 parts of puffed corn flour, 5 to 6 parts of anchovy oil, 3 to 4 parts of schizochytrid powder, 0.6 to 0.8 parts of composite adhesive, 0.3 to 0.4 parts of composite enzyme preparation, 0.3 to 0.4 parts of composite probiotic preparation, 1.5 to 2.0 parts of major element premix, 1.0 to 1.2 parts of trace element premix and 0.6 to 0.8 parts of vitamin premix.

3. The method for preparing the wet compound feed for silver pomfret juvenile breeding according to claim 1, wherein The steps include: The powdered feed for juvenile silver pomfret is weighed, and water is added according to a mass ratio of the powdered feed for juvenile silver pomfret to the water of 1:1.2-1.5, and the mixture is mixed to obtain the wet compound feed for juvenile silver pomfret breeding.

4. The preparation method according to claim 3, characterized in that The method for preparing the powdered feed for silver pomfret juveniles comprises the following steps: The composite adhesive, the composite enzyme preparation, the composite probiotic preparation, the macroelement premix, the trace element premix, and the vitamin premix are uniformly mixed; then, the mussel meat powder, the egg yolk powder, the wheat gluten powder, the puffed corn flour, the schizochytrium powder, and the whitefish meal are sequentially added and mixed uniformly to obtain a mixture; the mixture is then crushed and sieved, and the enzymatically hydrolyzed squid paste and the anchovy oil are added and mixed uniformly to obtain the powdered feed for silver pomfret juveniles.

5. A feeding device for the wet compound feed for silver pomfret juvenile aquaculture according to claim 1, characterized in that: The invention comprises a fixed base (1), the fixed base (1) being arranged above the breeding pond, the fixed base (1) being provided with a turnover assembly (5), the turnover assembly (5) being detachably connected to the side wall of a stainless steel transition tube (3), the open end of the stainless steel transition tube (3) being detachably connected to a stainless steel feeding tube (2), the stainless steel feeding tube (2) being used for storing wet compound feed for breeding silver pomfret juveniles; the stainless steel feeding tube (2) is further provided with a plurality of feeding holes (201); A bait pushing assembly (6) is detachably connected to the stainless steel transition tube (3), and the bait pushing assembly (6) is movably connected to the stainless steel bait casting tube (2). The bait pushing assembly (6) is arranged horizontally in the length direction of the stainless steel transition tube (3) and the stainless steel bait casting tube (2); It also includes a controller (4), which is arranged above the breeding pond and electrically connected to the bait pushing component (6) to control the bait pushing component (6) to move up and down in the stainless steel bait throwing tube (2).

6. The silver pomfret breeding and feeding device according to claim 5, characterized in that: The bait pushing assembly (6) comprises a built-in push rod (601) and a piston extrusion plate (602). The built-in push rod (601) is detachably mounted in the stainless steel transition tube (3), and one end of the built-in push rod is detachably connected to the piston extrusion plate (602). The piston extrusion plate (602) is located in the stainless steel bait casting tube (2).

7. The silver pomfret breeding and feeding device according to claim 6, characterized in that: The built-in push rod (601) is connected to a servo motor (7), and the servo motor (7) is electrically connected to the controller (4).

8. The silver pomfret breeding and feeding device according to claim 5, characterized in that: The turning assembly (5) comprises a hand-cranked turning device (501) and a rotating arm (502); the hand-cranked turning device (501) is mounted on the fixed base (1); the rotating arm (502) is also connected to the hand-cranked turning device (501); and the rotating arm (502) is detachably connected to the side wall of the stainless steel transition cylinder (3).

9. A feeding method using the feeding device according to any one of claims 5 to 8, characterized in that: The steps include: The hand-cranked turning device (501) is adjusted to control the rotating arm (502) to drive the stainless steel transition tube (3) and the stainless steel feeding tube (2) to be adjusted above the culture pond so that the open end of the stainless steel feeding tube (2) faces upward, and the wet compound feed for silver pomfret juvenile culture is placed in the stainless steel feeding tube (2); the stainless steel transition tube (3) and the stainless steel feeding tube (2) are then turned over by adjusting the hand-cranked turning device (501) and transferred to the water in the culture pond; The controller (4) controls the servo motor (7) to drive the built-in push rod (601) to move, thereby driving the piston extrusion plate (602) to automatically move up and down relative to the stainless steel feeding tube (2) therein, thereby pushing the wet compound feed for silver pomfret juvenile farming to fall from the feeding hole (201) on the stainless steel feeding tube (2) into the farming pond for the silver pomfret to eat.

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