With the continuous improvement of people's living standards, people's demand for animal-derived foods is changing from pursuing quantity to emphasizing quality and safety. In recent years, the events of "Clenbuterol", "Red Egg" and "Sanlu brand infant milk powder" are shocking. The safety of animal-derived food has become a far-reaching social problem, which has aroused widespread concern in the whole society. This is not only the need to protect human health, promote the sustainable development of animal husbandry and China's foreign trade, but also the need to increase farmers' production and income and the political, economic and social stability of the country. At present, there are some unavoidable problems in animal-derived food safety. Here, the author talks about personal views and opinions in combination with work practice.

1, the current situation and existing problems of animal-derived food safety

1. 1 Animal husbandry inputs such as feed, feed additives and veterinary drugs are important factors affecting the safety of animal-derived food.

1. 1. 1 chemical pollution of feed raw materials.

Pesticide residues in pasture are a very serious problem, mainly including organochlorine pesticides and organophosphorus pesticides. Pesticide residues refer to the toxic effects of pesticide residues in environment, food and feed on people and animals, including the toxicity of pesticides themselves and their derivatives, metabolites, degradation products and other reaction products in environment, food and feed. If there is pesticide residue in food and feed, it can enter human body and livestock with food and feed, which is harmful to human health and reduces livestock production performance.

1. 1.2 feed is moldy or contaminated by microorganisms.

Mildew or pollution of feed directly affects animal health and indirectly affects human safety. The molds that cause feed mildew mainly include Aspergillus flavus, Aspergillus ochraceus, Fusarium graminearum and Penicillium expansum. In the process of growth and reproduction, a large number of toxins will be produced, which will endanger the normal reproduction and health of animals. People cause mycosis by eating animal products such as meat, milk and eggs containing residual mycotoxins. Aflatoxin B 1 is very harmful to human beings, and it can cause cancer if ingested in a very small amount. Feed pollution may also include other pathogenic bacteria (such as streptococcus and salmonella), viruses and parasites. Many pathogenic microorganisms can pollute feed through excrement, water and air. And these contaminated feeds are transferred to humans through their products after entering animals.

Excessive addition of 1. 1.3 trace elements causes heavy metal pollution and poisoning.

Adding a certain amount of copper and organic arsenic preparations to feed is helpful to the growth of animals. However, in the actual feed production and sales process, some illegal producers and distributors use these trace elements in large quantities in order to achieve rapid growth and seek market space and high profits. In addition, farmers have a low level of education and a weak sense of scientific farming. They only know that the use of compound feed or feed additives has good effects and high benefits, but they blindly use a large number of trace elements, but they don't know that excessive trace elements added in feed accumulate in animals and are passed on to humans through their products, which affects human health.

1. 1.4 Abuse of veterinary drugs or excessive use of veterinary drug additives cause drug residues.

In the process of disease treatment, veterinary drugs are not used according to the prescribed dosage, scope, compatibility and withdrawal period, and veterinary drugs are overused. Some individual veterinarians, no matter what diseases they encounter, use large doses of antibiotics such as penicillin, sulfonamides and quinolones, and even use hormone drugs. This is not only unfavorable to the treatment of animal diseases, but also leads to drug resistance and high drug residues in animal products. In addition, adding drugs to the feed and not implementing the withdrawal period are also important reasons for the excessive drug residues.

1. 1.5 The phenomenon of using illegal drugs in aquaculture still exists.

Although the Ministry of Agriculture has issued a series of regulations, such as the List of Veterinary Drugs and Other Compounds Prohibited in Food and Animals and the List of Prohibited Drugs in Feed and Animal Drinking Water, individual aquaculture owners or feed producers add illegal drugs privately in pursuit of illegal profits, resulting in illegal drugs remaining in animal products and entering the human body through the food chain, posing a serious threat to human life, health and safety.