
Cattle markets experienced dramatic swings Thursday following confirmation of a dangerous parasite discovery that has livestock producers across the nation on high alert.
Federal agriculture officials announced Wednesday evening that New World screwworm had been identified in a Texas calf, representing the first detection in that state since 1966. The flesh-eating pest has been moving northward through Mexico throughout the past year.
Agriculture Secretary Brooke Rollins expressed confidence Thursday that the agency can successfully contain this isolated incident. However, any broader outbreak could further reduce America’s cattle population, which has already reached its lowest point in three-quarters of a century.
“The New World screwworm sounds like something from a horror movie, but it’s real,” stated Nate Sheets, a Republican nominee for Texas agriculture commissioner. “It is an agricultural emergency.”
Market reactions proved volatile throughout Thursday’s trading session. Feeder cattle contracts on the Chicago Mercantile Exchange initially declined as investors feared consumer demand for beef might weaken. However, prices quickly reversed course, climbing more than 3% as supply concerns took precedence.
Texas livestock operations face potentially devastating financial consequences, with industry experts estimating economic damages could reach $1.8 billion if the parasite establishes itself more widely.
“We’re going to need to see how fast it spreads and how the consumer reacts,” explained Matt Wiegand, commodity broker for FuturesOne. “Until we see a big demand impact from the consumer side, (cattle) numbers are still tight.”
The nation’s cattle supply has been steadily declining due to prolonged drought conditions that increased feed expenses and forced ranchers to reduce their herds. This shortage has created challenges for major meat processing companies, including JBS, Cargill and Tyson Foods, as they struggle to secure adequate animals for their facilities.
Industry representatives are pushing for flexibility in movement restrictions. The Meat Institute, representing processing companies, has asked federal officials to permit “low-risk” livestock shipments for slaughter despite the agency’s decision to halt animal transportation in the affected region. These shipments would involve animals traveling directly from uninfected farms to processing facilities.
Despite significant federal investment in prevention efforts, the parasite’s appearance indicates that screwworm flies successfully entered the country and will likely establish populations among wild animals, according to Lee Haines, an associate research professor of biological sciences at the University of Notre Dame in Indiana.
“The burden falls hardest on farmers who must monitor animals scattered across vast open rangeland, often going unobserved for days at a time,” Haines noted.








