What term describes the method of breeding and fattening animals using modern industrial methods?

The correct term for the method of breeding and fattening animals using modern industrial methods is factory farming. Factory farming refers to the large-scale, intensive production of livestock, typically using concentrated feed and in controlled environments to maximize efficiency and output. This approach often emphasizes high production rates and cost-effectiveness, leading to the establishment of large facilities that can house thousands of animals under one roof.

In factory farming, animals are generally raised in confined spaces with limited access to natural environments, and practices may include the use of antibiotics and hormones to promote growth and prevent disease. This method is characterized by its focus on mechanization and mass production, which is distinct from other farming practices that may prioritize animal welfare, environmental sustainability, or organic methods.

The other terms describe different farming practices: conventional farming often refers to traditional methods that may still use some modern techniques but do not emphasize the intensive, high-output focus typical of factory farming; sustainable farming seeks to balance ecological health, economic viability, and social equity; while grass-fed farming is specifically aimed at raising animals on pasture, which is fundamentally different from the confined and industrialized approach of factory farming.