Feedlots confine large numbers of cattle in barren pens for rapid weight gain, with welfare concerns around heat stress, respiratory disease, lameness, and social management in high-density systems.
Feedlot cattle experience abrupt dietary transitions from forage to high-grain diets causing ruminal acidosis and liver abscesses in a significant proportion of animals. Summer heat stress in open feedlots causes reduced welfare and increased mortality without shade and sprinkler provision. Social regrouping at entry disrupts established hierarchies, causing aggression and injury. Lame animals in large pens may not be identified and treated promptly. BRD causes prolonged respiratory distress in affected cattle, with early detection and treatment critical for welfare outcomes.