Ecological pig raising emphasizes that pigs are only one of the important components of a specific agricultural ecosystem or agricultural production system. As an animal in the livestock community in the agricultural ecosystem, pigs can not live without their living and development environment. The feed, varieties, pens, feeding methods, markets and other links related to pig raising constitute an inseparable system with pigs as the core, which is the production system of ecological pig raising.
Eco-pig industry requires interdependence with the environment to form a good environment, which not only makes the pig production system itself a benign circulation system, but also forms an interdependent relationship with the agricultural production system, so that the pig industry can coordinate with the agricultural resources and environment and take the road of sustainable development of human pig production. Ecological pig industry should not only meet the basic needs of contemporary human beings for the quantity and quality of pig products, but also not damage the basic ecological conditions of pig production for future generations.