牧原股份：采用规模化、一体化、自繁自养生产模式，无散养猪

Group 1 - The core viewpoint of the article is that the company, Muyuan Foods, focuses on a large-scale, integrated, self-breeding and self-raising production model, and does not engage in free-range pig farming [1] - The company emphasizes its commitment to improving production efficiency and pork quality, catering to consumer demand for safe, healthy, and delicious pork products [1] - Muyuan Foods has clarified that it does not offer free-range pigs that are fed little or no feed, which are characterized by longer growth cycles and firmer meat [1]