R-CALF USA is calling on the FDA to approve ivermectin to help protect livestock from the possible spread of New World screwworm in the U.S.
The group says that feed-grade ivermectin is a proven tool to protect domestic herds and wildlife, especially in southern border states.
They highlight the success of the drug in limiting the spread of cattle fever tick.
“The potential impact on the United States livestock markets would be immensely negative if an actual case of New World screwworm was identified in the USA. Until an adequate response with gamma ray irradiation of male screw worm flies can be implemented, the feeding of ivermectin is a very real defense.”
The request follows false reports that New World screwworm was found in Missouri. That claim caused a downturn in cattle futures markets and is now being investigated by the state of Missouri.
Last year was a busy year for pesticide litigation in the United States. At No. 10, it kicks off RFD-TV Legal Expert Roger McEowen’s list of the “Top 10” Agricultural Law and Tax Developments of 2025.
January 06, 2026 11:06 AM
·
Preserving equity through active risk management remains critical in a volatile, supply-driven market.
January 06, 2026 06:00 AM
·
As markets anticipate a return to normal trading following the New Year’s holiday, the possibility of the southern border re-opening to cattle is capturing much attention.
December 30, 2025 11:28 AM
Rep. Randy Feenstra, R-IA, details how the “One, Big, Beautiful Bill” Act (OBBBA) supports farmers, biofuels, and rural communities with tax breaks, crop insurance relief, and ag infrastructure.
December 23, 2025 02:01 PM
·
Recent USDA export sales data show China has been active in the U.S. market, but analysts tell RFD-TV News that the timing is a key clue.
December 22, 2025 12:45 PM
·
In Minnesota, a legal and legislative battle has reached a tipping point. For over a decade, the state’s Department of Natural Resources (DNR) and the private deer-farming industry have been locked in a dispute over the management of Chronic Wasting Disease (CWD).
December 22, 2025 12:30 PM
·
Tight feeder supplies and lower placements indicate continued support for the cattle market, with regional impacts heightened in Texas by reduced feeder imports.
December 22, 2025 10:10 AM
·
Farm Journal Foundation Senior Policy Adviser Dr. Stephanie Mercier outlines new research on the top sixteen biosecurity threats in agriculture/
December 10, 2025 01:05 PM
·
Mold damage is tightening China’s corn supplies, supporting higher prices and creating potential demand for alternative feed grains in early 2026.
December 09, 2025 07:00 AM
·
