Pregnant sow feed and preparation method thereof

Abstract

The present invention discloses a pregnant sow feed and a preparation method thereof, and relates to the technical field of pregnant sow feed preparation, the pregnant sow feed comprises 95-97% of a basic ration, 1-2% of combined fibers and 1-3% of a composite additive; the basic ration is prepared from the following components in percentage by mass: 30 to 35 percent of corn, 12 to 16 percent of soybean meal, 15 to 18 percent of broken rice, 18 to 22 percent of triticale, 8 to 12 percent of rice bran meal, 10 to 15 percent of wheat middling, 1.0 to 1.2 percent of mountain flour, 0.8 to 1.0 percent of calcium hydrophosphate, 0.3 to 0.5 percent of sodium chloride, 0.08 to 0.12 percent of lysine, 0.04 to 0.06 percent of threonine and 0.1 to 0.15 percent of choline chloride; the composite fiber comprises the following components in percentage by mass: 45-65% of sweet potato stem and leaf fiber, 20-35% of alginate fiber and 10-25% of konjaku flour. Compared with a single feed additive or simple superposition thereof, the feed additive disclosed by the invention has better performance in the aspects of immunological enhancement, nutrition utilization, reproductive performance and the like through the synergistic effect of the components, can simultaneously solve various problems in the breeding of pregnant sows, and provides an efficient and safe feed scheme for the pig raising industry.

Description

Technical Field

[0001] This invention relates to the field of feed preparation technology for pregnant sows, specifically a feed for pregnant sows and its preparation method. Background Technology

[0002] In the pig farming industry, the profitability of pregnant sows plays a decisive role in overall production levels. Currently, pregnant sow farming faces numerous problems: mycotoxin contamination of feed damages the sow's immune and liver / kidney functions, leading to abortion, stillbirth, etc.; restricted feeding causes sow hunger, increased stereotyped behaviors, and elevated stress levels, affecting reproductive performance; poor placental function and low insulin sensitivity result in low birth weight, high stillbirth rates, and high IUGR (intrauterine growth rate) piglets; and nutritional imbalances fail to meet the needs of both the sow and the embryo, leading to low productivity.

[0003] While existing technologies offer solutions for individual problems, such as specific feed additives for mycotoxin removal and specific fibers for gut health, there is a lack of feeds that can comprehensively address all of these issues.

[0004] Based on this, a feed for pregnant sows and its preparation method are provided, which can eliminate the drawbacks of existing feeds. Summary of the Invention

[0005] The purpose of this invention is to provide a feed for pregnant sows and a method for preparing the same, so as to solve the problem that existing feeds in the background art cannot solve multiple problems of sow reproduction at the same time, but can only solve a single problem.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A feed for pregnant sows, comprising 95-97% basal diet, 1-2% combined fiber and 1-3% compound additives; The basic diet, by weight percentage, comprises: corn 30-35%, soybean meal 12-16%, broken rice 15-18%, black wheat 18-22%, rice bran meal 8-12%, wheat middlings 10-15%, limestone powder 1.0-1.2%, dicalcium phosphate 0.8-1.0%, sodium chloride 0.3-0.5%, lysine 0.08-0.12%, threonine 0.04-0.06%, and choline chloride 0.1-0.15%. The composite fiber comprises, by weight percentage: 45-65% sweet potato stem and leaf fiber, 20-35% seaweed fiber, and 10-25% konjac flour; the composite additive is obtained by mixing one part of each of material No. 1, material No. 2, and material No. 3, and then mixing them with yeast cell wall polysaccharide at a weight ratio of 10:1.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative: the first material has a potency of 10. 4 50 portions of antimicrobial peptides derived from Lactobacillus plantarum metabolites, with a content of 10 U / g. 7 Composed of 50 portions of Bacillus licheniformis with a CFU / g concentration.

[0008] In one alternative embodiment: the second material consists of 20 parts of glucose oxidase with an enzyme activity of 1000 U / g, 20 parts of catalase with an enzyme activity of 1000 U / g, 20 parts of peptidase with an enzyme activity of 1000 U / g, 20 parts of cyclooxygenoreductase with an enzyme activity of 1000 U / g, and 20 parts of phosphatase with an enzyme activity of 10000 U / g.

[0009] In one alternative: the No. 3 material consists of 50 parts of calcareous montmorillonite containing 6% cat's eye stone and calcined at 380℃, 15 parts of gypsum, 15 parts of sodium sulfate, and 20 parts of baking soda.

[0010] In one alternative: the yeast cell wall polysaccharide contains 40% β-glucan and 30% mannan oligosaccharide.

[0011] In one alternative, the basal diet comprises, by weight percentage: 32.78% corn, 14.5% soybean meal, 16.67% broken rice, 20% black wheat, 10% rice bran meal, 12% wheat middlings, 1.1% limestone powder, 0.96% dicalcium phosphate, 0.4% sodium chloride, 0.1% lysine, 0.05% threonine, and 0.13% choline chloride.

[0012] In one alternative: the composite fiber comprises, by weight percentage: 55% sweet potato stem and leaf fiber, 20% seaweed fiber, and 25% konjac flour.

[0013] This invention also discloses a method for preparing feed for pregnant sows, comprising the following steps: Step 1: Preparation of the basal diet: Grind each component of the basal diet separately through a grinder and pass them through a 40-mesh sieve. Mix them evenly in proportion, controlling the moisture content to be between 5-12%. Step 2: Preparation of composite fiber: Mix sweet potato stem and leaf fiber, seaweed fiber and konjac powder evenly in a certain proportion, grind them through a 60-mesh sieve using a pulverizer, and control the moisture content at 2-8%; Step 3: Preparation of composite additives: S1: Take antimicrobial peptides, a metabolite of Lactobacillus plantarum, and Bacillus licheniformis, mix them in a mixer, and control the moisture content to be 2-10% as the first material; S2: Take glucose oxidase, catalase, peptidase, cyclooxygenase and phosphatase, mix them well, and control the moisture content at 2-8% as material No. 2. S3: Take calcareous montmorillonite, gypsum, sodium sulfate, and baking soda, mix them well, and crush them through a 40-mesh sieve using a pulverizer. Control the moisture content to 2-5% to make it material No. 3. S4: Take one part of each of material No. 1, material No. 2 and material No. 3 and mix them evenly. Then mix them with yeast cell wall polysaccharide at a weight ratio of 10:1. Control the moisture content to 5-12%. After mixing, the compound additive is obtained. Step 4: Mixing: Mix the basal diet, fiber blend, and compound additives evenly at a mass percentage of 95-97%, 1-2%, and 1-3% respectively to obtain the feed for pregnant sows.

[0014] This invention also discloses a crusher, including a processing table, a crushing box, a worm gear, a worm, and a discharge box. The crushing box is fixedly connected to the upper surface of the processing table via a bracket. The top wall of the crushing box has a feed inlet. The bottom wall of the crushing box is fixedly connected to the discharge box. The worm gear is connected to the discharge box via a bearing. The worm is rotatably mounted on the bottom wall of the crushing box via a bearing seat. The worm meshes with the worm gear. A motor is mounted on the upper surface of the processing table via a motor mounting bracket. The output end of the motor is connected to the worm. A discharge plate is fixedly connected to the worm gear. The discharge plate has a discharge hole. A crushing column is fixedly connected to the upper surface of the discharge plate. A crushing ring is provided at the opening of the discharge box. Several crushing blocks are provided around the crushing column. The crushing box has a trapezoidal cross-section. A shaking plate is rotatably mounted on the inclined side wall of the crushing box via a bearing seat and a rotating shaft. A spring is fixedly connected between the shaking plate and the inclined side wall of the crushing box. Two symmetrical guide rails are fixedly connected to the bottom wall of the crushing box. A first slider is slidably connected to the inner side wall of the two guide rails. A lifting ring is fixedly connected between the two first sliders via a fixing rod. Two symmetrical striking plates are fixedly connected to the side wall of the lifting ring. The striking plates abut against the shaking plate. A rotating block is fixedly connected to the upper surface of the crushing column. The rotating block has a wave groove. A second slider is provided on the inner wall of the lifting ring. The second slider is slidably connected to the inner side wall of the wave groove. The lower surface of the lifting ring is fixedly connected to a compression block by several connecting rods; Two containers are provided on the upper surface of the processing table; A protective cover is fixedly connected to the upper surface of the processing table. A hydraulic cylinder is installed inside the protective cover. The output end of the hydraulic cylinder is connected to a rotating column through a bearing. The rotating column is slidably connected to the unloading plate. A rotating column cavity is opened inside the crushing column. The crushed block is slidably connected to the side wall of the rotating column cavity. A fixed column is fixedly connected to the top wall of the rotating column cavity. The fixed column is slidably connected to the rotating column through a bearing. A number of connecting rods are connected to the circumference of the rotating column through a number of pins. The ends of the connecting rods away from the rotating column are rotatably connected to the crushed block through pins.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared to single feed additives or their simple combination, this invention, through the synergistic effect between components, exhibits superior performance in terms of immune enhancement, nutrient utilization, and reproductive performance. It can simultaneously solve multiple problems in the breeding of pregnant sows, providing an efficient and safe feed solution for the pig industry.

[0016] The antimicrobial peptides derived from Lactobacillus plantarum metabolites used in this invention have "targeted antibacterial" properties. They do not significantly inhibit beneficial bacteria such as Bacillus licheniformis, but can effectively inhibit pathogenic bacteria such as Escherichia coli, precisely regulate the intestinal flora of sows, and improve their health.

[0017] This invention significantly improves detoxification efficiency through a dual mechanism of "calcium montmorillonite adsorption + combined fiber-promoted excretion". Compared with using detoxification additives alone, it reduces aflatoxin B1 residue, increases intestinal toxin excretion, effectively reduces the damage of mycotoxins to the immune function and liver and kidney function of sows, and lowers the probability of abortion, stillbirth and other problems.

[0018] The combined fiber and compound enzyme preparation of the present invention work synergistically to reduce the intestinal pH value to 5.8, which is more conducive to the stability of antimicrobial peptides (stability increased from 72.3% to 98.6%) and mineral absorption than the single fiber group, thus optimizing the intestinal environment and improving nutrient absorption and utilization.

[0019] This invention utilizes the synergistic effect of "aleurone layer fiber + Bacillus licheniformis + yeast cell wall polysaccharides" to increase the number of intestinal lactic acid bacteria to 8.9 × 10⁻⁶. 7 The CFU / g level was 1.5 times higher than that of the single aleurone layer addition group; serum IgG levels increased by 17.8%, significantly enhancing the immunity of sows.

[0020] The special crusher of this invention can flexibly adjust the crushing distance, and with the help of the shaking plate vibration and the extrusion block to assist in feeding, it can improve the crushing efficiency and material uniformity, and ensure the stability of feed function. Attached Figure Description

[0021] Figure 1 This is a flowchart of the feed preparation process according to the present invention.

[0022] Figure 2 This is a first-view view of the pulverizer of the present invention.

[0023] Figure 3 This is a second-view view of the pulverizer of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the pulverizer of the present invention.

[0025] Figure 5 This is an enlarged view of part A of the pulverizer of the present invention.

[0026] Figure 6 This is a schematic diagram of the bottom structure of the pulverizer of the present invention.

[0027] Figure 7 This is a schematic diagram of the wave groove structure of the present invention.

[0028] Figure label annotations: 1. Processing table, 2. Crushing box, 3. Motor, 4. Worm gear, 5. Worm, 6. Container box, 7. Protective cover, 8. Unloading box, 9. Hydraulic cylinder, 10. Shaking plate, 11. Guide rail, 12. First slider, 13. Striking plate, 14. Lifting ring, 15. Rotating block, 16. Wave groove, 17. Second slider, 18. Extrusion block, 19. Fixed column, 20. Crushing column, 21. Crushing block, 22. Connecting rod, 23. Unloading plate, 24. Rotating column, 25. Crushing ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In one embodiment, such as Figures 1-7 As shown, a feeding diet for pregnant sows includes 95-97% basal diet, 1-2% combined fiber and 1-3% compound additives. The basic daily ration, by weight percentage, includes: corn 30-35%, soybean meal 12-16%, broken rice 15-18%, black wheat 18-22%, rice bran meal 8-12%, wheat middlings 10-15%, limestone powder 1.0-1.2%, dicalcium phosphate 0.8-1.0%, sodium chloride 0.3-0.5%, lysine 0.08-0.12%, threonine 0.04-0.06%, and choline chloride 0.1-0.15%. The composite fiber comprises, by weight percentage: 45-65% sweet potato stem and leaf fiber, 20-35% seaweed fiber, and 10-25% konjac flour; the composite additive is obtained by mixing one part each of No. 1, No. 2, and No. 3 materials and then mixing them with yeast cell wall polysaccharide at a weight ratio of 10:1.

[0031] This demonstrates that antimicrobial peptides can selectively inhibit pathogenic bacteria in vivo without affecting the colonization of beneficial bacteria.

[0032] In the process of producing feed for pregnant sows with multiple functions, it was found that the antibacterial components could easily conflict with the probiotics that help regulate the intestinal flora of sows, resulting in a significant reduction in feed effectiveness. However, research has found that a metabolite of Lactobacillus plantarum, an antimicrobial peptide, has no significant inhibitory effect on beneficial bacteria such as Bacillus licheniformis, Bacillus subtilis, and Bifidobacterium, but can effectively inhibit pathogenic bacteria such as Escherichia coli, thus reducing their activity.

[0033] Multiple sets of experiments were conducted to verify this: (1) Example 1: In vitro antibacterial test (the effect of antimicrobial peptides on Bacillus licheniformis) Experimental materials: Antimicrobial peptides: antimicrobial peptides derived from Lactobacillus plantarum metabolites (potency ≥10) 4 U / g, from material No. 1 of this invention); Beneficial bacteria: Bacillus licheniformis (content ≥10) 7 CFU / g (from material No. 1 of this invention); Control bacteria: Escherichia coli (standard strain ATCC25922, pathogenic bacteria); Culture media: MRS liquid medium (for lactic acid bacteria culture) and LB liquid medium (for Escherichia coli culture).

[0034] Test method: Set up 3 treatment groups, with 3 repetitions per group: Control group: Inoculated only with Bacillus licheniformis (1×10⁻⁶) 6 CFU / mL) or E. coli (1×10⁻⁶) 6 (CFU / mL) Low-dose group: After inoculation with bacterial culture, antimicrobial peptides were added to achieve a final concentration of 100 U / mL; High-dose group: After inoculation with bacterial culture, antimicrobial peptides were added to achieve a final concentration of 500 U / mL (5 times the actual amount added in this invention).

[0035] The cells were incubated at 37°C for 24 hours, and the viable count was determined using the plate count method.

[0036] The experimental results are shown in Table 1:

[0037] Table 1 in conclusion: The antimicrobial peptides did not significantly inhibit the growth of Bacillus licheniformis (P>0.05), and the number of viable bacteria in the high-dose group decreased by only 8.5%. The antimicrobial peptides had a strong inhibitory effect on pathogenic Escherichia coli, with an inhibition rate of 99.99% in the high-dose group.

[0038] (2) Example 2: In vitro synergistic culture test (compatibility of antimicrobial peptides and compound probiotics) Experimental materials: Antimicrobial peptides: Same as in Example 1; Compound probiotics: Bacillus licheniformis (1×10) 7 CFU / g) + Bacillus subtilis (1×10) 6 CFU / g (common beneficial bacteria); Culture medium: MRS-LB mixed medium (compatible with lactic acid bacteria and Bacillus).

[0039] Test method: Set up 2 treatment groups, with 3 repetitions in each group: Probiotic group: Compound probiotics were inoculated into the culture medium to a final concentration of 1×10⁻⁶. 6 CFU / mL; Synergistic group: After inoculation with compound probiotics, antimicrobial peptides (final concentration 200U / mL, which is the actual amount added in this invention) are added.

[0040] After incubation at 37℃ for 48 hours, the viable counts of Bacillus licheniformis and Bacillus subtilis were determined.

[0041] The experimental results are shown in Table 2:

[0042] Table 2 in conclusion: When antimicrobial peptides were co-cultured with compound probiotics (Bacillus licheniformis + Bacillus subtilis), the number of beneficial bacteria did not decrease significantly, proving that antimicrobial peptides have no inhibitory effect on a variety of beneficial bacteria.

[0043] (3) Example 3: Animal gut microbiota detection (in vivo compatibility verification) Experimental subjects: Twenty healthy pregnant sows (90 days of gestation) were randomly divided into two groups of 10 sows each. Control group: basal diet + No. 1 feed (without antimicrobial peptides, only Bacillus licheniformis); Experimental group: basal diet + No. 1 feed (containing 50 parts antimicrobial peptides + 50 parts Bacillus licheniformis, same as the formula of this invention).

[0044] Test method: Collect fresh feces from the sow after 14 days of feeding; The gut microbiota structure was analyzed using 16S rRNA sequencing, with a focus on detecting the relative abundance of beneficial bacteria such as Lactobacillus (belonging to Bacillus licheniformis) and Bifidobacterium.

[0045] The experimental results are shown in Table 3:

[0046] Table 3 in conclusion: Compared with the control group, the experimental group (containing antimicrobial peptides) showed no significant difference in the relative abundance of beneficial bacteria such as lactobacillus and bifidobacteria in the intestines; however, the relative abundance of Escherichia coli (pathogenic bacteria) was significantly reduced in the experimental group, demonstrating that the antimicrobial peptides can selectively inhibit pathogenic bacteria in vivo without affecting the colonization of beneficial bacteria.

[0047] The above embodiments, from in vitro antibacterial activity and co-culture to in vivo gut microbiota detection, all demonstrate that the antimicrobial peptides derived from *Lactobacillus plantarum* metabolites used in this invention have no significant inhibitory effect on beneficial bacteria such as *Bacillus licheniformis* and *Bacillus subtilis*, but can effectively inhibit pathogenic bacteria such as *Escherichia coli*. This "targeted antibacterial" characteristic is key to the synergistic effect of the antimicrobial peptides and beneficial bacteria, and also proves that this invention is not a simple additive process, but rather achieves the technical effect of "inhibiting bacteria without inhibiting beneficial bacteria" by screening for specific antimicrobial peptides, overcoming the problem of non-selective inhibition of beneficial bacteria by conventional antimicrobial components.

[0048] To demonstrate that the present invention, through the synergistic design of functional components, is significantly superior to the simple superposition of single feed additives in terms of detoxification efficiency, intestinal environment regulation, immune enhancement, and nutrient utilization.

[0049] Multiple sets of experiments were conducted to verify this: Experimental subjects: Forty healthy Large White sows at 90 days of gestation were randomly divided into 5 groups (8 sows per group): ① Control group (basal diet, without any functional additives); ② Control group 1 (basal diet + compound additive, 2 kg / ton). The compound additive was prepared by mixing one part each of feed No. 1, feed No. 2, and feed No. 3 at a weight ratio of 10:1 with yeast cell wall polysaccharide. Feed No. 1 consisted of 50 parts of antimicrobial peptides from Lactobacillus plantarum metabolites and 50 parts of Bacillus licheniformis; Feed No. 2 consisted of 20 parts of glucose oxidase, 20 parts of catalase, 20 parts of peptidase, 20 parts of cyclooxygenase, and 20 parts of phosphatase; Feed No. 3 consisted of 50 parts of calcium montmorillonite, 15 parts of gypsum, 15 parts of sodium sulfate, and 20 parts of baking soda. ③ Comparative Group 2 (basal diet + combined fiber, 2% added); the combined fiber, by weight percentage, includes 45-65% sweet potato stem and leaf fiber, 20-35% seaweed fiber, and 10-25% konjac flour. ④ Comparative Group 3 (basal diet + 15% wheat middlings); wheat middlings processed using a specific technique are added as a single ingredient. ⑤ This invention group (basal diet + 2% combined fiber + 2% compound additive, as per the claims).

[0050] Trial period: from 90 days of pregnancy to delivery (approximately 30 days).

[0051] Testing indicators: Detoxification efficiency (aflatoxin B1 residue in feed), gut microbiota (number of lactic acid bacteria), immune indicators (serum IgG content), nutrient utilization rate (calcium / phosphorus absorption rate), reproductive performance (healthy offspring rate, stillbirth rate). Comparative Example 1: Detoxification Efficiency Comparison The experimental results are shown in Table 4:

[0052] Table 4 Conclusion: This invention improves detoxification efficiency compared to single feed additives through a dual mechanism of "montmorillonite adsorption + fiber-promoted excretion," demonstrating a significant synergistic effect. Comparative Example 2: Comparison of Intestinal Acidity Environment and Mineral Absorption The experimental results are shown in Table 5.

[0053] Table 5 Conclusion: In this invention, glucose oxidase and fiber synergistically lower intestinal pH, resulting in a 36.4% increase in antimicrobial peptide stability and a 24.3% increase in calcium absorption compared to using fiber alone to adjust the gut microbiota. Comparative Example 3: Comparison of Gut Microbiota and Immune Indicators The experimental results are shown in Table 6.

[0054] Table 6 Conclusion: This invention, through the synergistic effect of "aleurone layer fiber + Bacillus licheniformis + yeast polysaccharide", increases the number of intestinal lactic acid bacteria by 1.5 times compared with the use of aleurone layer powder alone for infection prevention, improves immune indicators by 17.8%, and has no cases of postpartum infection. Comparative Example 4: Comparison of Phosphorus Utilization Rate and Reproductive Performance (Comprehensive Comparison) The experimental results are shown in Table 7.

[0055] Table 7 Conclusion: The synergistic effect of the phosphatase and combined fiber in this invention increases phosphorus utilization by 30.2% compared with the simple superposition of the three control groups, and the reproductive performance indicators are better, proving the technical advantages of non-simple superposition. This invention, through the synergistic design of functional components, is significantly superior to a single control group or its simple combination in terms of detoxification efficiency, intestinal environment regulation, immune enhancement, and nutrient utilization.

[0056] A method for preparing feed for pregnant sows includes the following steps: Step 1: Preparation of the basal diet: Grind each component of the basal diet separately through a grinder and pass them through a 40-mesh sieve. Mix them evenly in proportion, controlling the moisture content to be between 5-12%. Step 2: Preparation of composite fiber: Mix sweet potato stem and leaf fiber, seaweed fiber and konjac powder evenly in a certain proportion, grind them through a 60-mesh sieve using a pulverizer, and control the moisture content at 2-8%; Step 3: Preparation of composite additives: S1: Take antimicrobial peptides, a metabolite of Lactobacillus plantarum, and Bacillus licheniformis, mix them in a mixer, and control the moisture content to be 2-10% as the first material; S2: Take glucose oxidase, catalase, peptidase, cyclooxygenase and phosphatase, mix them well, and control the moisture content at 2-8% as material No. 2. S3: Take calcareous montmorillonite, gypsum, sodium sulfate, and baking soda, mix them well, and crush them through a 40-mesh sieve using a pulverizer. Control the moisture content to 2-5% to make it material No. 3. S4: Take one part of each of material No. 1, material No. 2 and material No. 3 and mix them evenly. Then mix them with yeast cell wall polysaccharide at a weight ratio of 10:1. Control the moisture content to 5-12%. After mixing, the compound additive is obtained. Step 4: Mixing: Mix the basal diet, fiber blend, and compound additives evenly at a mass percentage of 95-97%, 1-2%, and 1-3% respectively to obtain the feed for pregnant sows.

[0057] A crusher includes a processing table 1, a crushing box 2, a worm gear 4, a worm 5, and a discharge box 8. The crushing box 2 is fixedly connected to the upper surface of the processing table 1 by a bracket. The top wall of the crushing box 2 has a feed inlet. The bottom wall of the crushing box 2 is fixedly connected to the discharge box 8. The worm gear 4 is connected to the discharge box 8 by a bearing. The worm 5 is rotatably mounted on the bottom wall of the crushing box 2 by a bearing seat. The worm 5 meshes with the worm gear 4. A motor 3 is mounted on the upper surface of the processing table 1 by a motor mounting bracket. The output end of the motor 3 is connected to the worm 5. A discharge plate 23 is fixedly connected to the worm gear 4. The discharge plate 23 has a discharge hole. A crushing column 20 is fixedly connected to the upper surface of the discharge plate 23. A crushing ring 25 is provided at the opening of the discharge box 8. Several crushed blocks 21 are provided around the crushing column 20. After adjusting the crushing spacing, the material to be crushed is put into the crushing box 2. The motor 3 is started. The motor 3 drives the worm 5 to rotate, the worm 5 drives the worm wheel 4 to rotate, the worm wheel 4 drives the discharge plate 23 to rotate, the discharge plate 23 drives the crushing column 20 to rotate, and the crushing column 20 drives several crushed blocks 21 to rotate, which cooperate with the crushing ring 25 to crush the material.

[0058] The crushing box 2 has a trapezoidal cross-section. A shaking plate 10 is rotatably mounted on the inclined side wall of the crushing box 2 via a bearing seat and a rotating shaft. A spring is fixedly connected between the shaking plate 10 and the inclined side wall of the crushing box 2. Two symmetrical guide rails 11 are fixedly connected to the bottom wall of the crushing box 2. A first slider 12 is slidably connected to the inner side wall of the two guide rails 11. A lifting ring 14 is fixedly connected between the two first sliders 12 via a fixed rod. Two symmetrical striking plates 13 are fixedly connected to the side wall of the lifting ring 14. The striking plates 13 abut against the shaking plate 10. A rotating block 15 is fixedly connected to the upper surface of the crushing column 20. The rotating block 15 has a wave groove 16. A second slider 17 is provided on the inner wall of the lifting ring 14. The second slider 17 is slidably connected to the inner side wall of the wave groove 16. As the crushing column 20 rotates, it drives the rotating block 15 to rotate. The wave groove 16 of the rotating block 15 cooperates with the second slider 17 to drive the lifting ring 14 to move up and down. The lifting ring 14 drives the striking plate 13 to move up and down. The striking plate 13 continuously drives the shaking plate 10 to cooperate with the spring to vibrate up and down, shaking the material on the shaking plate 10 into the unloading box 8 for crushing, thus preventing the material from adhering to the side wall of the shaking plate 10 and being unable to fall.

[0059] A pressing block 18 is fixedly connected to the lower surface of the lifting ring 14 by several connecting rods; As the lifting ring 14 moves up and down, it drives the extrusion block 18 to press down, allowing the material gathered above the crushing ring 25 to be pressed between the crushing ring 25 and the crushing block 21 for thorough crushing. This also prevents the material from gathering above the crushing ring 25 for a long time without being crushed, thus improving crushing efficiency.

[0060] Two holding boxes 6 are provided on the upper surface of the processing table 1. In one embodiment, a protective cover 7 is fixedly connected to the upper surface of the processing table 1, and a hydraulic cylinder 9 is installed inside the protective cover 7. The output end of the hydraulic cylinder 9 is connected to a rotating column 24 through a bearing. The rotating column 24 is slidably connected to the unloading plate 23. A rotating column cavity is opened inside the crushing column 20. The crushed block 21 is slidably connected to the side wall of the rotating column cavity. A fixed column 19 is fixedly connected to the top wall of the rotating column cavity. The fixed column 19 is slidably connected to the rotating column 24 through a pin. A connecting rod 22 is connected to the periphery of the rotating column 24 through a number of pins. The end of the connecting rod 22 away from the rotating column 24 is rotatably connected to the crushed block 21 through a pin.

[0061] Depending on the required degree of crushing of the material to be crushed, adjust the distance between the crushing block 21 and the crushing ring 25, start the hydraulic cylinder 9, the hydraulic cylinder 9 drives the rotating column 24 to rise, the rotating column 24 drives several crushing blocks 21 to extend outward or retract inward through the connecting rod 22. The closer the crushing block 21 is to the crushing ring 25, the finer the crushed material particles are, and vice versa. The grinding distance can be flexibly adjusted according to the required fineness of the material, eliminating the need for manual replacement of grinding blades with different spacings, making adjustment more convenient.

[0062] The specific working principle and process of a pulverizer are as follows: S1: First, adjust the distance between the crushing block 21 and the crushing ring 25 according to the degree of crushing required for the material to be crushed. Start the hydraulic cylinder 9. The hydraulic cylinder 9 drives the rotating column 24 to rise. The rotating column 24 drives several crushing blocks 21 to extend outward or retract inward through the connecting rod 22. The closer the crushing block 21 is to the crushing ring 25, the finer the crushed material particles are, and vice versa. The grinding distance can be flexibly adjusted according to the required fineness of the material, eliminating the need for manual replacement of grinding blades with different spacings, making adjustment more convenient; S2: After adjusting the crushing distance, put the material to be crushed into the crushing box 2, start the motor 3, the motor 3 drives the worm 5 to rotate, the worm 5 drives the worm wheel 4 to rotate, the worm wheel 4 drives the discharge plate 23 to rotate, the discharge plate 23 drives the crushing column 20 to rotate, the crushing column 20 drives several crushed blocks 21 to rotate, and cooperates with the crushing ring 25 to crush the material. S3: When the crushing column 20 rotates, it drives the rotating block 15 to rotate. The wave groove 16 of the rotating block 15 cooperates with the second slider 17 to drive the lifting ring 14 to move up and down. The lifting ring 14 drives the striking plate 13 to move up and down. The striking plate 13 continuously drives the shaking plate 10 to cooperate with the spring to vibrate up and down, shaking the material on the shaking plate 10 into the unloading box 8 for crushing, so as to avoid the material adhering to the side wall of the shaking plate 10 and being unable to fall. S4: As the lifting ring 14 moves up and down, it drives the extrusion block 18 to press down, so that the material gathered above the crushing ring 25 can be pressed into the space between the crushing ring 25 and the crushing block 21 for full crushing. This also prevents the material from gathering above the crushing ring 25 for a long time without being crushed, thus improving the crushing efficiency. S5: The crushed material falls into the holding box 6 through the discharge hole on the discharge plate 23, and the collection is completed.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A feed for pregnant sows, characterized in that, It includes 95-97% of the basal diet, 1-2% of combined fiber and 1-3% of compound additives; The basal diet, by weight percentage, comprises: corn 30-35%, soybean meal 12-16%, broken rice 15-18%, black wheat 18-22%, rice bran meal 8-12%, wheat middlings 10-15%, limestone powder 1.0-1.2%, dicalcium phosphate 0.8-1.0%, sodium chloride 0.3-0.5%, lysine 0.08-0.12%, threonine 0.04-0.06%, and choline chloride 0.1-0.15%. The composite fiber comprises, by weight percentage: 45-65% sweet potato stem and leaf fiber, 20-35% seaweed fiber, and 10-25% konjac flour; The composite additive is obtained by mixing one part of each of material No. 1, material No. 2, and material No. 3, and then mixing them with yeast cell wall polysaccharide at a weight ratio of 10:

1.

2. The feed for pregnant sows according to claim 1, characterized in that, The No. 1 feed consists of 50 parts of antimicrobial peptides, a metabolite of Lactobacillus plantarum with a potency of 104 U / g, and 50 parts of Bacillus licheniformis with a content of 107 CFU / g.

3. The feed for pregnant sows according to claim 1, characterized in that, The second batch of feed consists of 20 parts of glucose oxidase with an enzyme activity of 1000 U / g, 20 parts of catalase with an enzyme activity of 1000 U / g, 20 parts of peptidase with an enzyme activity of 1000 U / g, 20 parts of cyclooxygenoreductase with an enzyme activity of 1000 U / g, and 20 parts of phosphatase with an enzyme activity of 10000 U / g.

4. The feed for pregnant sows according to claim 1, characterized in that, Material No. 3 consists of 50 parts of calcined montmorillonite (calcined at 380℃), 15 parts of fine stone powder, 15 parts of sodium sulfate, and 20 parts of baking soda.

5. The feed for pregnant sows according to claim 1, characterized in that, Yeast cell wall polysaccharides contain 40-50% β-glucan and 20-30% mannan oligosaccharides.

6. The feed for pregnant sows according to claim 1, characterized in that, The basal diet, by weight percentage, consists of: corn 32.78%, soybean meal 14.5%, broken rice 16.67%, black wheat 20%, rice bran meal 10%, wheat middlings 12%, limestone powder 1.1%, dicalcium phosphate 0.96%, sodium chloride 0.4%, lysine 0.1%, threonine 0.05%, and choline chloride 0.13%.

7. The feed for pregnant sows according to claim 6, characterized in that, The composite fiber composition, by weight percentage, includes: 55% sweet potato stem and leaf fiber, 20% seaweed fiber, and 25% konjac flour.

8. A method for preparing feed for pregnant sows according to any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Preparation of the basal diet: Grind each component of the basal diet separately through a grinder and pass it through a 40-mesh sieve. Mix them evenly in proportion and control the moisture content at 10-14%. Step 2: Preparation of composite fiber: Mix sweet potato stem and leaf fiber, seaweed fiber and konjac powder evenly in proportion, crush them through a 60-mesh sieve, and control the moisture content at 2-8%; Step 3: Preparation of composite additives: S1: Take antimicrobial peptides, a metabolite of Lactobacillus plantarum, and Bacillus licheniformis, mix them in a mixer, and control the moisture content to be 2-10% as the first material; S2: Take glucose oxidase, catalase, peptidase, cyclooxygenase and phosphatase, mix them well, and control the moisture content at 2-8% as material No.

2. S3: Take calcareous montmorillonite, gypsum, sodium sulfate, and baking soda, mix them well, and crush them through a 40-mesh sieve using a pulverizer. Control the moisture content to 2-5% to make it material No.

3. S4: Take one part of each of material No. 1, material No. 2 and material No. 3 and mix them evenly. Then mix them with yeast cell wall polysaccharide at a weight ratio of 10:

1. Control the moisture content to 5-12%. After mixing, the compound additive is obtained. Step 4: General Mixing: Mix the basal diet, combined fiber and compound additives evenly at a mass percentage of 95-97%, 1-2% and 1-3%, respectively. The mixed materials are fed into a pellet mill and granulated using a ring die to press them into long cylindrical particles, ensuring that the particles have moderate hardness. The hot granules after granulation enter a cooler, where the temperature is reduced to room temperature by counter-current air cooling, while the moisture content is reduced to 8-12%. The cooled pellets are screened by a vibrating screen to remove powder and agglomerated pellets, leaving uniformly sized finished pellets to obtain the final feed for pregnant sows.

9. A pulverizer according to claim 8, characterized in that, The assembly includes a processing table (1), a crushing box (2), a worm gear (4), a worm (5), and a discharge box (8). The crushing box (2) is fixedly connected to the upper surface of the processing table (1) via a bracket. The top wall of the crushing box (2) has a feed inlet. The bottom wall of the crushing box (2) is fixedly connected to the discharge box (8). The worm gear (4) is connected to the discharge box (8) via a bearing. The worm (5) is rotatably mounted on the bottom wall of the crushing box (2) via a bearing seat. The worm (5) and the worm gear... (4) Engagement, a motor (3) is mounted on the upper surface of the processing table (1) via a motor mounting bracket. The output end of the motor (3) is connected to the worm gear (5). The worm wheel (4) is fixedly connected to a discharge plate (23). The discharge plate (23) has a discharge hole. A crushing column (20) is fixedly connected to the upper surface of the discharge plate (23). A crushing ring (25) is provided at the opening of the discharge box (8). Several crushing blocks (21) are provided around the crushing column (20). The crushing box (2) has a trapezoidal cross section. The inclined side wall of the crushing box (2) is provided with a shaking plate (10) through a bearing seat and a rotating shaft. A spring is fixedly connected between the shaking plate (10) and the inclined side wall of the crushing box (2). Two symmetrical guide rails (11) are fixedly connected to the bottom wall of the crushing box (2). A first slider (12) is slidably connected to the inner side wall of the two guide rails (11). A lifting ring (14) is fixedly connected between the two first sliders (12) through a fixing rod. Two symmetrical striking plates (13) are fixedly connected to the side wall of the lifting ring (14). The striking plates (13) abut against the shaking plate (10). A rotating block (15) is fixedly connected to the upper surface of the crushing column (20). The rotating block (15) has a wave groove (16). A second slider (17) is provided on the inner wall of the lifting ring (14). The second slider (17) is slidably connected to the inner side wall of the wave groove (16). The lower surface of the lifting ring (14) is fixedly connected to a pressing block (18) by several connecting rods; Two containers (6) are provided on the upper surface of the processing table (1).

10. A pulverizer according to claim 9, characterized in that, A protective cover (7) is fixedly connected to the upper surface of the processing table (1). A hydraulic cylinder (9) is installed inside the protective cover (7). A rotating column (24) is connected to the output end of the hydraulic cylinder (9) through a bearing. The rotating column (24) is slidably connected to the unloading plate (23). A rotating column cavity is opened inside the crushing column (20). The crushed block (21) is slidably connected to the side wall of the rotating column cavity. A fixed column (19) is fixedly connected to the top wall of the rotating column cavity. The fixed column (19) is slidably connected to the rotating column (24). A connecting rod (22) is connected to the periphery of the rotating column (24) through several pins. The ends of the connecting rods (22) away from the rotating column (24) are rotatably connected to the crushed block (21) through pins.

Images