On today’s Cow-Calf Corner, Rosslyn Biggs, DVM, OSU College of Veterinary Medicine, State Extension Beef Cattle Specialist talks about internal parasite resistance in Oklahoma cow-calf herds and how Oklahoma ranchers can participate in the latest research.
Anthelmintic (dewormer) resistance is a growing concern, and given the expense of dewormers, producers and veterinarians need to be sure they are working. Recent Oklahoma State University (OSU) research has shed light on the seeming need to mitigate the challenge of internal parasite resistance in beef cattle.
OSU College of Veterinary Medicine researchers recently published findings that provided evidence of apparent internal parasite resistance in Oklahoma cow-calf herds. In this small study, thirteen of 16 (81%) participating herds had evidence of apparent anthelmintic resistance based on fecal egg count reduction testing (FECRT).
OSU research is ongoing with an expanded opportunity for Oklahoma cattlemen and veterinarians in 2024. Researchers from Veterinary Medicine, Animal and Food Sciences, and Extension are currently conducting a larger study of Oklahoma herds. The study hopes to collect data from at least 50 different groups of cattle from around the state. Samples can be collected from now through fall 2024.
The study is seeking a minimum of 20 (preferably 30) animals that are within the same stage of production. For example, classes of cattle enrolled in the study could be mature cows of approximately the same age, weaned calves, purchased growing and weaned steers or stocker heifers, or replacement heifers. Preference to participate will be given to operations with young animals between the ages of weaning and yearling. More information is needed on these age groups of cattle.
Good animal handling facilities are required where cattle can be safely restrained for fecal collection. The first collection must occur at initial processing/deworming or within seven days prior to that initial processing/deworming. The second collection must occur 10-17 days post-deworming.
Sampling supplies will be provided at no cost. OSU research personnel will coordinate with the participant and extension personnel will make every effort to be present at sampling. Samples must be shipped to the laboratory as soon as possible and a summary of the results along with veterinary interpretation will be provided. There is no cost to the producer for laboratory testing or interpretation.
If you are interested in participating in this project, please fill out the interest form. Once received, the research team will be in contact to coordinate delivery of the sampling kits and other details. Questions on the project may be directed to rosslyn.biggs@okstate.edu or david.lalman@okstate.edu.
