Where to place the more than 400000 tons of pig blood products a year? Official interpretation of lifting the ban on pig blood products

OA show ('918 '); on September 13, 2018, the Ministry of agriculture and rural areas issued announcement No 64 www.feedtrade.com.cn/policy/law/2018-09-24/1985128.html, and feed production enterprises suspended the use of pig blood as raw material for blood products to produce pig feed On December 28, 2018, the Ministry of agriculture and rural areas issued announcement No 91 www.feedtrade.com.cn/policy/law/2019-01-03/1985154.html, and the qualified pig blood products were lifted On January 15, 2019, the head of the animal husbandry and Veterinary Bureau of the Ministry of agriculture and rural areas gave a detailed answer on the reasons why pig blood products were banned first and then lifted The small edition of EGF summarized the reasons for the official lifting of the ban on pig blood products as follows: EGF 1, the positive detection of nucleic acid in pig blood products does not mean that the products produced by the standardized process contain live virus; EGF 2 In all the domestic swine epidemic cases that have been identified, no commercial feed containing pig blood has been found to cause the spread of swine fever in Africa; EGF 3, the United States, Canada and the European Union and most other countries and regions allow pig blood protein powder and other feed blood products to be used in pig feed; EGF 4, plasma protein powder products can provide effective technical solutions for the withdrawal of growth promoting antibiotics in 2020 EGF 5 More than 2 million tons of pig blood will be produced each year, and 400000 tons of pig blood products can be produced Lifting the ban will not only reduce the cost of slaughtering enterprises to find a way out for pig blood by-products EGF 6, pig blood protein content is rich, generally 16% - 18%, which can alleviate the shortage of protein resources in China; EgF 7, concentrated production of pig blood products can reduce the pollution caused by random emissions EgF 8 and high temperature spray drying technology can effectively spread the risk of the epidemic through blood channels EGF asked: what is the risk of transmitting African swine fever virus by feeding blood products such as pig blood protein powder, and whether a scientific assessment has been made Answer: feed blood products refer to the fresh blood obtained from slaughtering pigs and other livestock and poultry as raw materials, which are processed by a series of processes such as sterilization, separation and drying, mainly including plasma protein powder, blood globulin powder and blood powder Since August 2018, the Ministry of agriculture and rural areas has carried out a comprehensive sampling inspection on the products of all feed blood product manufacturers, and found that there are several batches of products with positive results of African classical swine fever nucleic acid However, the positive detection of nucleic acid does not mean that the products produced by the standard process contain live virus The Spanish Institute of food science and technology carried out the African swine fever virus inactivation test, and inoculated the porcine plasma with high concentration of live virus through spray drying The results showed that the virus inactivation rate was over 99.99% In order to prevent the spread risk of African swine fever, the Ministry of agriculture and rural areas issued a notice on September 13, 2018 to suspend the use of feed blood products made from pig blood in pig feed At the same time, in order to systematically evaluate the risk of spread of nucleic acid positive blood products, the Ministry of agriculture and rural areas arranged China animal health and Epidemiology Center and Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences to carry out virus activity test and animal feeding test respectively The results showed that there was no virus activity in the nucleic acid positive samples of African classical swine fever virus, no virus infection symptoms were found after feeding piglets, and no African classical swine fever virus was detected in the blood According to the epidemiological investigation, there is no spread of swine fever in Africa caused by commercial feed containing pig blood EGF ask: what is the use of pig blood protein powder and other feed blood products in developed countries? EGF answer: most countries and regions such as the United States, Canada and the European Union allow pig blood protein powder and other feed blood products to be used in pig feed In October 2014, the world organization for animal health confirmed that if there are good production specifications and biosafety standards, blood products such as pig plasma protein powder are not the possible sources of infection of swine epidemic diarrhea virus and other viruses Due to the occurrence of foot-and-mouth disease, infectious spongiform encephalopathy ("mad cow disease"), feed dioxin pollution and other crisis events in the European Union countries of EGF, it is believed that the improper use of some animal by-products may cause harm to human and animal health In 2001, it was forbidden to use animal blood products for feed However, in 2006, a regulation was issued to allow the use of non ruminant blood products such as pigs in feed At present, the output of EGF in the United States and Canada is about 25000 tons, and the annual output in the European Union is about 15000 tons Most of EGF is added in the proportion of 2% - 5% in the piglet teaching tank material, which is similar to the use method, use proportion and use amount in China EgF: what specific measures have been adopted by the Ministry of agriculture and the rural sector in the strict control of the risk of transmitting African swine fever virus by feed products? EgF A after relevant experiments and assessments, the pig blood protein powder produced by high temperature spray drying process, even if the test results are positive for the African swine fever virus nucleic acid, the risk of spreading the epidemic is very low However, in order to strengthen risk management and control, the Ministry of agriculture and rural areas issued announcement No 91 on December 28, 2018, which introduced strict process control measures for all aspects of pig blood protein powder production In the slaughtering process, EGF clearly requires enterprises to strengthen the detection of African swine fever virus in pig blood, effectively control the safety of pig blood raw materials, improve the conditions of pig blood collection and storage, and implement closed transportation and storage The plant area shall be equipped with vehicle disinfection facilities to disinfect the pig blood transport vehicles in and out of the plant In the production process, it is clearly required that the feed blood products manufacturers should control the raw materials, process and finished products, strictly implement the inspection system of raw materials entering the factory The raw materials of pig blood must come from the slaughterhouse (point) without the epidemic situation of African swine fever The same batch of pigs from pig blood must pass the detection of African swine fever in the slaughterhouse (field) The raw material transport vehicles entering and leaving the factory should be disinfected, and the production should be strictly implemented sample observation and sales record system The high temperature spray drying process must be adopted for the production of the product The inlet temperature of the spray drying equipment is not less than 220 degrees centigrade, and the air outlet temperature is not less than 80 degrees Celsius After spraying and drying, the material must be maintained for more than 20 minutes at 60 degrees Celsius The finished products shall be stored in the finished product warehouse (at room temperature above 20 ℃) for more than 20 days, and shall not be sold before passing the inspection of African swine fever At the same time, strict physical isolation should be carried out between pig blood raw materials and finished products to control the flow of personnel and materials and prevent pollution At the same time, it also formulated and issued the "standards for disinfection of facilities, equipment and environment of feed blood products manufacturing enterprises with pig blood as raw material", which requires enterprises to carry out relevant disinfection work in strict accordance with the standards EGF asked: what other considerations can be taken to allow pig blood protein powder and other feed blood products to be used in feed, besides the low risk of virus transmission through systematic assessment? EGF replied: This is a prudent decision made after relevant tests and risk assessment, comprehensive consideration of various factors and reference to international experience On the one hand, considering that the plasma protein powder product has a certain role in enhancing the immunity of piglets, reducing diarrhea and other health problems, it can provide an effective technical solution for the withdrawal of growth promoting antibiotics in 2020 On the other hand, it is also considered to find a way out for slaughtering pig blood by-products and effectively reduce the environmental pollution and epidemic risk caused by random emission In China, the annual output of pig blood is more than 2 million tons The content of nutrients and bioactive substances in pig blood is high, and the content of protein is 16% - 18%, which contains many mineral elements, vitamins, amino acids and immunoglobulins Through the high temperature spray drying process, the pig blood can produce 50 kg of plasma protein powder and 150 kg of blood protein powder, which can be used as high quality feed raw material If it is forbidden to feed pig blood by-products, EGF will cause additional cost to slaughtering enterprises, which may cause pig blood to be discharged at will and bring great risk of environmental pollution In addition, due to the rich nutrition of pig blood, it is a good carrier and culture medium for pathogenic microorganisms, and it is easy to breed pathogens and viruses under natural conditions, so there is a greater risk of disease transmission EgF In the current critical period of prevention and control of African swine fever, pigs are allowed to produce pig blood with slaughtering, and processed into pig plasma protein powder and hemoglobin powder through high temperature spray drying process, and sell to feed enterprises as raw materials to produce commercial pig feed, which can find a way out for pig blood by-products produced by slaughtering, which can not only alleviate the contradiction between the shortage of protein feed resources in China, but also effectively evade them The risk of the spread of the epidemic through the blood route, killing two birds with one stone How does the Ministry of agriculture and rural areas ensure that control measures are implemented A: in the next step, the Ministry of agriculture and rural areas will require local competent departments at all levels to strengthen the supervision and management of the production of feed blood products, comprehensively carry out on-site inspection on all enterprises within the jurisdiction, and enterprises that meet the requirements of the announcement can continue to produce and sell, crack down on unlicensed production behaviors, and resolutely ban backward production processes such as air drying For the enterprises whose control measures are not implemented in place, they shall be ordered to stop production immediately and make rectification within a time limit Production can be resumed only after the rectification is in place through on-site verification If the rectification still fails to meet the requirements, the production license shall be revoked and the production of relevant products shall be stopped Through the implementation of strict comprehensive control measures, to ensure that there is no risk At the same time, the Ministry of agriculture and rural areas will strengthen the supervision and inspection of local management departments to ensure the implementation of control measures EGF (author: Ruonan)