Analysis of Causes, Treatment and Measurement of Cross Pollution in Feed Processing

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Feed Safety has become a hotspot, the World Health Organization (WHO) and the United Nations Food and Agriculture Organization (FAO), and the relevant groups of the world have strengthened feed safety, including institutional settings, strengthen or adjust policies and regulations, supervision and management. And technology investment. my country’s feed safety project has been launched, the national and provincial feed quality and safety inspection agencies have also been established. At the same time, the feed safety assessment base has established feed safety monitoring information network, which has identified drugs and disabled drugs that are allowed in the feed. And stepping up the detection method standards for the detection method of drugs, especially the residual drugs and antibiotic residues, and increase the supervision of prohibited drugs in the feed. Many well-known feed companies have established HACCP control systems to protect their feed safety. Due to the lag of my country’s feed standard system, many operating technical specifications have not yet been established, and the inspection of feed additives and prohibited drugs is still lacking in high authority, high and versatility. Therefore, for most feed mills in our country, lack of feed security measures and methods. It is necessary to provide more effective information for feed producers to help them ensure feed quality and improve feed safety. This paper analyzes the pollution problems of the drug during the feed processing, and the countermeasures are proposed to give a reference for the feed manufacturer. 5EU Drug Pollution during Livestock Feed Processing refers to a significant number of drugs or drug feeds during processing, thereby mixing the next batch (even several batches) In the feed, that is, the residual drug (or drug feed) causes pollution to the next batch of feed. 5EU 1 Feed Processing Process Procedure 5EU Drug Pollution of Livestock Feeds in Feed Processing, Transferring and Storage, etc. occur. However, the processing is mainly as follows. 5EU 1.1 Vacuum Symposium 5EU in Large, Medium Feed Factory Processing Workshop, During the Processing Process, Diversion It is the risk of dust, purifying the production environment and reduces dust explosion from the processing link. For the collected dust, from the economic consideration, it is generally returned to the feed, but dust delays re-return to the production of the same batch, or the dust collecting system is unreasonable, causing too much absorption of drugs and excipie. Or attach to the dust collecting system due to static or moisture to enter the lower dust. 5EU 1.2 ingredient System 5EU is the premise and guarantee of strict implementation of production formulations, especially drug additives that have direct impact on feed safety. The accurate measurement is very critical. Once the error is wrong, it is not discovered in time, and in the subsequent work segment is unable to make a serious pollution. 5EUCountry feed industry information network 1.3 Mixed machine system 5EU mixing process is a process of uniform distribution of various ingredie, and the main link of drug pollution. The main reason is that the unreasonable mixing effect is not met, the intended mixing effect is not achieved, producing mixed uneven or over-mixing phenomena; in the horizontal mixer, improper design, stirring spiral (or paddle) and mixer The gap between the inner wall and the bottom is too large, resulting in incomplete discharge, and the remaining feed is left. Vertical mixers often remain in the spiral e or ware wall in the discharge opening. The mixer is not obeyed to close or the pad is damaged. Further, the viscosity of the feed is large (adding molas and oil), or the inner wall of the mixer is attached to the inner wall of the mixer, the top and the attachment in the air return e. 5EU Service Livestock 1.4 Cap 5EU is the processing capacity between equilibrium equipment, which is conducive to production of continuous equipment, but too shallow or volume too Small, poor design, or attached to static or humidity, can’t completely remove residual feed, causing drug pollution. 5EU 1.5 Conveyor 5EU Distance, Excessive Use Level Delivery Equipment, may have residual results. The main reason is that horizontal conveying equipment is designed or constructed, and the bottom gap is too large, or it is not completely cleaned and attached to static or moist. 5EU 1.6 Fighting 3E 5EU the residual drug caused by the livestock bucket machine is very small, but the feed is made due to static, humidity and viscosity In addition, the residual bucket or the base can also cause pollution. 5EU 1.7 Disco 5EU the drug pollution caused by the service livestock warehouse is mainly designed or constructed (slope less than 60 degrees). In addition, it is often knocked that the internal fluctuation is uneven, generating a bridge and adhesion phenomenon, plus the purge incomplete and the residual feed, containing the drug and does not contain the same bin, causing feed drug pollution. 5EU 1.8 Processing 5EU Services Animal Husbandry Processing is to arrange different types or different formulations under the conditions of existing processing equipment. order. Due to operation, production technology, production equipment, etc., the feed products produced by the above-batch production will have an impact on the product of the subsequent production. Therefore, incorrect production sorting is also the cause of feed drug pollution. 5EU 2 How to reduce or prevent feed processing Chin drug contamination 5EU China feed industryInformation Network After analyzing the causes of drug contamination in feed, it is necessary to a t improvement measures. Usually, as long as the production of production is sorted or adjusted, the problem can be significantly reduced. For some manufacturers, it may be necessary to repair and replace the machine, and even renovate a full range of production systems. In order to avoid the production of drug pollution, combined with the actual production, the conventional improvement measures a ted mainly include the following aspects: 5EU 2.1 Production Technology Design 5EU – Service When the animal husbandry is designed for feed processing, it is necessary to shorten the delivery distance, less level conveying equipment, and use the dispenser and self-flow form. For horizontal conveying equipment, a scraper conveyor with self-cleaner should be used as much as possible. Under process requireme, minimize the number of materials and the number of transition hoppers. Suction dust removal systems set up a separate wind network as much as possible. The metering and addition of the mixed composite premix should be scheduled to be arranged at the upper part of the mixer, and if it is necessary to increase or transport after metering and weighing, a pneumatic conveyance must be used. 5EU 2.2 Develop appropriate Feed Production Rankment Table 5EU Service Livestock Correct Sort by u0026 ldquo; Defense Dedication u0026 RDQUO ;. The general principle is to produce no drug feed, reproduce drug feed; add the same drug to the same animal to be processed together, and processed a feed containing high drug, and then processed low; Animals that do not contain drug feeds, Mr. is not subject to suspension, such as mother sow, breastfeeding (pre-stage) feed, etc., producing several batches and re-manufacturing restrictions contain non-drug feed. However, a certain amount of drug feed can be placed much higher than the drug feed, and it can be considered to provide a fully separated special production line to minimize cross-contamination risk. The sorting method should be applied to the entire processing system, that is, starting to the finished warehouse to end. 5EU 2.3 Static Attach 5EU is to eliminate static electricity, can be installed on the affected machine, or purchase unstatic predictive precharge Or use the addition of liquid raw materials to control dust to reduce static electricity. Alternatively, the oscillator can be mounted at a portion where the feed is easily attached to vibrate the attachment. 5EU 2.4 Dust System 5EU Service Animal Husband Correctly Designs the air flow rate and flow of dustproof network, and allows more time to clean up Dust in the entire system. Or reduce dust from liquid raw materials. It is not necessary to collect dust during the production of the drug feed (also placed back to the next-like feed). 5EU 2.5 Mixer Residue 5EU for drug-containing feed should use a high uniform mixer. Or adjust the agitating spiral or stirring spacing and the spacing of the base plate. The easiest way is to install a plastic brush on the stirring spiral belt or to remove the air cleaning nozzle to remove residual feed. Also correctly determined the order and time is also critical, and it is generally put into drugs when the mixer is fill in 1/2 to 3/4. 5EU – Best Feed, 2.6 Fighting Machine Residue 5EU Service Animal Husbands have residues for the fighting machine, can consider adjusting the Bandhoot base to reduce feed Battle height, enabling cleared cleaner. Or install air cleaning nozzles. In addition, the inner surface and transition portions must be cleaned and smooth. 5EU 2.7 Feed Warehouse Residual 5EU is designed to design, and when the stored feed type changes, it should be manually carried out Check and clean up. Or install an oscillator or cleave the residual feed by air cleaning. 5EU – Best Feed, 2.8 Tempeaker, Granulator and Dryer in Service Animal Husbands For the residue in the dryer, just pay attention to timely clearing It can be solved, but for the regulator, the residue in the granulator can be solved by u0026 ldquo; rinsing u0026 rdquo; u0026 ldquo; Rinse u0026 rDQUO; is a residue with a certain number of raw materials such as corn flour, soybean meal or wheat bran, and take away the residue of the equipment when the drug feed or animal feedstock is used. u0026 ldquo; Rinse u0026 rdquo; not only applied to the conditioner, granulator, should start from the crushing warehouse, throughout the production process. It is regularly checked the processing equipment to confirm the effectiveness of the rinsing procedure. The used flushing materials should be applied to the appropriate label and store it, and use it to use its feed again. 5EU Safety is a systematic engineering. In addition to the drug contamination of the above-mentioned processes, there are many other impacts. In addition, improved quality management systems and systems are important aspects that affect feed safety, and feed processing enterprises should pay more attention. 5EU 3 Cross Contamination Demonstration 5EU the metrics of the cross-contamination of animal husbandry in the feed mill is a very tricky problem in the world feed industry. Although the overall goal of the feed mill is to reduce cross-contamination, it is impossible to develop legal and regulatory systems for cross-pollution, if not given the exact measurement method, and cannot be provided to test cross-contamination of the feed mill. 5EU 3.1 Uniformity and Cross Contamination5EU Uniformity (Homogeneity) is defined as u0026 ldquo; Differences in Particle Content in Samples u0026 RDQUO; Cross contamination, defined as a u0026 ldquo; carry-over u0026 rdquo; When evaluating feed quality and safety, uniform and cross-contamination is two associated and different concepts. For example, the smaller the particles of the feed, the smaller the mixing uniformity, that is, the mixing effect is good, the uniformity is high, the variation coefficient (CV) is low. However, there are dangers of cross-contamination of too thin particles. Some fine particles may be transferred to the next device and the next batch, resulting in pollution to the next batch. If the particles of the feed are too large, there may be problems in mixing evenly, but the opportunity to generate cross-contamination is small. For uniformity current general practices, the variation coefficient of the mixer is required to be less than 5%. However, there is no scientific study showing more than 5% of danger to animals and human food. Most feed scientists believe that the variation coefficient is between 5% and 10%, the production performance is the same. The maximum influencing factors of cross-contamination are drugs. It has a view that solving the simplest method of cross-pollution is that there is no antibiotics in the formula and ingredie that do not have to bring cross-contamination. 5EU 3.2 Cross Contamination Demonstration 5EU Service Animal Husbands For Cross Pollution Quantitative Issues, just as the problem of mixing uniformity, first choose trace and Measurement scheme. Only the trace is selected to judge cross-contamination and quantitative cross-contamination. So select the appropriate trace and measurement plan facilitate the development of legal and rules and regulations and guidance feed mill production. The tracers currently used are different. Sources can be divided into foreign tracers. Such as yttrium, colored iron, methylvinecal and cobalt. Endogenous sexuality is an antibiotic or other drug ingredient, as well as salt. But in European salt has gradually replaced by other reliable ingredie. It is generally considered to determine the conditions for the design of cross-contamination. 2 in the feed raw materials; 5EU service livestock 3 has no effect on the organs of animals; 5EU service animal husband 4 can be mixed in solid form In the 10-1000 mg / kg application range, it can be evenly mixed; 5EU 5 per gram contains at least 106 particles; 5EU – Service Animal Husband 6 It is stable in the processing engineering, especially in the heating and extrusion granulation process; 5EU 7 analysis method is simple, reliable, repetitive; 5EU ChinaIndustry information network 8 analysis detection concentration is 0.5%; 5EU can be used for premixing feed and full price feed; 5EU Feed, service livestock can not be regenerated.5EU 4 Conclusion 5EU True Pollution Problem is quite serious in my country, and is one of the factors affecting feed safety.For the metrics of cross-contamination, there is no ready-made approach in my country, and there is no relevant legal and rules and regulations for cross-pollution, which is relatively small for this area.5EU

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