Bovine Stress Response: SAM System and HPA Axis
Common Triggers and Signs of Stress in Cattle
Handling, transportation, weighing, regrouping, and environmental changes can all trigger stress responses in cattle. Common signs include agitation, reduced feed intake, and increased respiration. Prolonged stress may also affect immunity, rumen stability, and reproductive performance.
Two Major Regulatory Systems
Mild Stress vs. Chronic Stress
Mild stress from routine weighing or calm handling is generally recoverable. However, rough handling, long transport, frequent regrouping, and poor environmental conditions may contribute to chronic stress and reduced performance.
Practical Recommendations
Reducing unnecessary high-intensity stress through low-stress management techniques, adequate rest during transport, and stable social groups helps maintain herd stability, animal welfare, and long-term productivity.