Natural stocking is to raise livestock and poultry under natural conditions without any pollution. Select areas where there are no industrial wastes and pesticides, or where air, soil, water, and other environmental indicators meet the standard, and raise livestock and poultry in natural stocking. During the withdrawal period, under the natural conditions, animal husbandry period production methods can be used to feed livestock and poultry through the addition of biological agents that are harmless to the human body. The production cycle can be divided into two phases. The first phase is raised according to the common law, and the second phase is the drug withdrawal period. During the drug withdrawal period, no pollution, no residue, and pollution-free feed from “green†food production areas are used. Ecological Principles Feeding Contaminated waste produced in livestock and poultry production, which is likely to cause “pollution hazards†and organic wastewater, is ecologically sound and buried, so that the living environment of livestock and poultry is always kept in a pollution-free and ecologically-harmonic environment. in. The artificial ecological livestock farm model of the "10 Central Wastewater Treatment Ecosystem Wastewater Treatment Ecosystem" can be adopted to produce biogas from the manure processing ecosystem and reuse the products directly or indirectly during the production of biogas. The “green†feed is used throughout the breeding of livestock and poultry, using non-pollution, residue-free, pollution-free “green†feed that meets the requirements. Feeds that are not contaminated with substances such as pesticides, and feeds with residual additives are not used. Biosafety measures adopt biological safety measures to raise livestock and poultry, that is, adopt all-in and all-out methods to cut off transmission of disease sources in the farms (households). Through a strict system, the pathogens are rejected, and each farmer (farm) raises only one species of livestock and poultry. Because there is a species-to-species difference in the resistance of livestock and poultry to diseases, adopting the "all-in, all-out" breeding method can effectively cut off the spread of pathogens in livestock farms (households). Strengthen environmental management Strengthen the veterinary hygiene management of livestock and poultry households (farms), create a suitable ecological environment, reduce the chance of bacterial and viral infections, cut off the spread of epidemic diseases, strictly control the occurrence of various diseases, and ensure the healthy growth of livestock and poultry. Ecological Principles Prevention of Diseases In areas where the environmental index meets standards or livestock and poultry farms, select appropriate breeds of livestock and poultry, and use biological preparations that are pollution-free, non-residual, and non-toxic and have no toxic or side effects as long-additives and disease-preventing drugs throughout the breeding process. , According to the regulations, indiscriminate addition of drugs, and strictly abide by the withdrawal period, the drug residue is controlled below the safety residue. Controlling Livestock and Poultry Diseases When livestock and poultry are affected, early elimination of diseased livestock and poultry requires efficient treatment, non-toxic, low-residue drugs. When necessary, strong action, rapid metabolism, and side effects can be added during the production process. Small, minimally-occurring medicines and additives, or biological agents as medicines for disease control, control the occurrence and development of livestock diseases. China Agricultural Network Editor