http://hdl.handle.net/10150/135391 2026-06-07T13:16:24Z http://hdl.handle.net/10150/680013 Equine Herpesvirus 1 (EHV-1) Brownlee, Christina; Greene, Betsy An outbreak of EHV-1 that originated at the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race event Nov 5-9 in Waco, TX is being monitored. Arizona has confirmed three EHV-1 positive horses in Maricopa county and one in Pinal county (as of Dec 3, 2025). Cases associated with the Nov 2025 outbreak continue to appear in multiple states. 2025-12-01T00:00:00Z http://hdl.handle.net/10150/680012 Preparing Livestock Producers for New World Screwworm Reemergence in the United States Hall, Ashley; Audoin, Flavie; Brischke, Andrew; Greene, Elizabeth A.; Reed, Deborah L.H.; Spanyers, Katie; Wright, Ashley New World Screwworm (Cochliomyia hominivorax) is a fly larva, or maggot, that can burrow into the flesh of a living animal, unlike other fly larvae that only feed on dead flesh. New World Screwworm (NWS) can affect any livestock species, as well as pets, wildlife, birds, humans, and essentially any warm-blooded animal. In the 1950’s and early 1960’s, NWS infestations resulted in devastating losses to cattle and wildlife in the southern United States. Economic impacts reached $50-100 million (USDA, 2025). In the 1960’s NWS was eradicated in the United States (US). Since then, the US and Panama have collaborated through the Commission for the Eradication and Prevention of New World Screwworm Infestation in Livestock (COPEG) to prevent NWS from spreading north of the Darién Gap by releasing sterile male flies. Since NWS female flies tend to breed once in a lifetime, this process decreases the NWS population. In 2023, NWS was able to break this barrier and spread northward. As of late September 2025, NWS was detected as far north as Nuevo León, Mexico (Figure 1). COPEG continues to release sterile flies in Central America and Mexico, however sterile fly production is at maximum capacity at the current facilities. US livestock producers should be prepared to implement proactive management and husbandry practices in the near term as well as preventative measures to limit the potential impact an infestation will have on the livestock industry if and when a regional detection happens. 2025-10-01T00:00:00Z http://hdl.handle.net/10150/679604 Nine Common Reasons Your Hens Aren't Laying Wright, Ashley Reduced egg production often reflects normal biological stages, health conditions, or environmental stressors rather than a single isolated problem. Understanding these influences helps flock owners assess age, nutrition, lighting, housing conditions, and overall hen health before assuming a more serious issue. With this knowledge, small-scale producers can make informed management adjustments to support consistent laying and improve overall flock well-being. 2026-01-01T00:00:00Z http://hdl.handle.net/10150/679602 Arizona Seasonal Passes for 4-H Large Livestock Projects Wright, Ashley; Chappell, Haley; Colville, Cheyanne Seasonal Passes are essential for tracking the movement of exhibition livestock and protecting animal health statewide. The Arizona Department of Agriculture (AZDA) requires all Arizona residents who exhibit livestock at shows or the fair to possess a Seasonal Pass. 2026-01-01T00:00:00Z