What are the veterinary drugs that are forbidden to be used during the laying period?

(1) Reasons for the increase of veterinary drug residues In recent years, incidents of veterinary drug residues and food poisoning have occurred continuously, seriously endangering consumers' health and causing adverse effects in society. There are many reasons for these problems, including: ① unreasonable use of pesticides, veterinary drugs and fertilizers in the process of planting and breeding, and industrial "three wastes" pollution, which can cause drug residues and harmful substances in some agricultural products to exceed the standard; (2) Illegal use of prohibited items during processing, resulting in products containing toxic and harmful substances; ③ In the circulation process, logistics facilities such as packaging, storage and transportation are backward and poorly managed, resulting in "secondary pollution". Excessive veterinary drug residues in animal-derived foods have seriously affected the export of livestock products in China. Therefore, breeders of laying hens should ensure that animals get proper nutrition, the feeding environment meets the environmental quality standards of livestock and poultry farms, and the drinking water meets the quality standards of drinking water for livestock and poultry. Strengthen feeding management and take various measures to reduce stress and enhance animal immunity. The feed used should comply with the provisions of the guidelines for the use of various animal feeds. Animal diseases are mainly prevented, and animal deaths are prevented in strict accordance with the provisions of the Law of People's Republic of China (PRC) on Animal Epidemic Prevention. Veterinary drugs used to prevent, treat and diagnose diseases when necessary must comply with the relevant provisions of People's Republic of China (PRC) Veterinary Drug Code, People's Republic of China (PRC) Veterinary Drug Code, Veterinary Drug Quality Standard, Veterinary Biological Products Quality Standard, Imported Veterinary Drug Quality Standard and Feed Drug Additives Usage Standard. All veterinary drugs must come from manufacturers with veterinary drug production licenses and product approval numbers, or suppliers with veterinary drug import licenses. The use of veterinary drug labels shall comply with the provisions of the Regulations on the Administration of Veterinary Drugs and the Measures for the Administration of Veterinary Drug Labels and Instructions.

(2) Principles to be followed in the use of veterinary drugs ① It is forbidden to use veterinary drugs produced by genetic engineering without the approval of the national animal husbandry and veterinary administrative department; Prohibit the use of veterinary drugs that have not been approved by the Ministry of Agriculture or have been eliminated; ③ It is forbidden to use veterinary drugs with teratogenic, carcinogenic and mutagenic effects; (4) Prohibit the use of phenol and aldehyde disinfectants during the laying period; ⑤ It is forbidden to add pharmaceutical feed additives to chicken feed during the whole laying period; ⑥ Long-term drug feeding is prohibited; All landowners prohibit the use of hormones or other substances with hormonal effects and hypnotic and sedative drugs; 8. It is forbidden to use furazolidone drugs; Pet-name ruby prohibit the use of veterinary drugs that will cause serious pollution to the environment; Attending to prohibit the use of veterinary drugs produced by genetic engineering without the approval of the state animal husbandry and veterinary administrative department. Veterinary drugs and other compounds prohibited during laying period are shown in Table 6-6.

Table 6-6 Prohibited veterinary drugs and other compounds during laying period