First Product Conditionally Approved For Prevention And Treatment Of NWS

Oct 06, 2025

The Food and Drug Administration (FDA) has conditionally approved a doramectin injectable solution (Dectomax-CA1) made by Zoetis for the prevention and treatment of New World screwworm (NWS) larval infestations in cattle. It also will help prevent reinfestation for 21 days. This conditional approval applies to beef cattle, female dairy cattle less than 20 months of age, pregnant beef cows, newborn calves and bulls.

“Under this conditional approval, the FDA has determined the drug is safe and has a reasonable expectation of effectiveness. We are making this treatment available to cattle producers immediately while the sponsor collects the data needed for a full approval,” said Timothy Schell, acting director of the FDA’s Center for Veterinary Medicine.

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Video: Screening Nursery Ingredients - Kynna Crawford

In this episode of The Swine Nutrition Blackbelt Podcast, Kynna Crawford, Graduate Research Assistant at South Dakota State University, discusses how Plackett-Burman designs can help screen nursery diet ingredients for early post-weaning feed intake. She explains why low intake after weaning contributes to stress and mortality, how screening trials can evaluate multiple ingredients in a single study, and how the approach can support both research and commercial nursery nutrition decisions. Listen now on all major platforms!

Click here to read the full research article: https://academic.oup.com/jas/article/...

"A single screening trial can help identify which nursery ingredients deserve deeper research for early post-weaning feed intake."

Meet the guest: Kynna Crawford / kynna-crawford-a2610a3aa is a Master's student in Animal Sciences at South Dakota State University, where her work focuses on swine nutrition and nursery pig management. Her research examines strategies to alleviate weaning stress, including dietary approaches and screening tools to identify ingredients that may promote early feed intake. Learn more from Kynna Crawford on The Swine Nutrition Blackbelt Podcast, available on all major platforms.