This is the "five freedoms" model: freedom from hunger, discomfort, pain, fear, and the freedom to express natural behavior. Welfare says it is acceptable to use animals for food, work, or science, provided we treat them humanely while they are alive. It is the ethics of the cage: the cage can exist, but it must be clean, spacious, and filled with enrichment.
This is the "five freedoms" model: freedom from hunger, discomfort, pain, fear, and the freedom to express natural behavior. Welfare says it is acceptable to use animals for food, work, or science, provided we treat them humanely while they are alive. It is the ethics of the cage: the cage can exist, but it must be clean, spacious, and filled with enrichment.