
Fever ticks carried from Mexico are devastating cattle operations in south Texas, with babesiosis killing up to 90% of unexposed herds. Rancher Richard Guerra has left 9,000 acres idle for four years after 22 quarantines in 15 years.
Tick quarantines shrink the cattle supply in border regions and raise production costs, but the effect on national prices is small. Buyers should watch for wider herd losses if the infestation spreads.
After 356 past disease events, Live Cattle moved a median +0.2% over 5 sessions (54% higher; middle half -0.8% to +1.1%), and +1.1% over 20.
After 266 past disease events, Feeder Cattle moved a median +0.5% over 5 sessions (59% higher; middle half -1.1% to +1.7%), and +1.7% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.