Evaluation of porcine epidemic diarrhea virus (PEDV) production impact and time to stability in sow herds

摘要

New cases of porcine epidemic diarrhea virus (PEDV) have spread extensively within the United States since the first diagnosed farm was confirmed in April, 2013. The original severe US PEDV strain causes up to 100% suckling piglet mortality in breeding herds which results in massive economic losses for pork producers. Initial efforts to stabilize or eliminate the virus after infection have included whole-herd exposure programs inspired by the same types of programs used to eliminate transmissible gastroenteritis virus (TGEV) in breeding herds. Whereas the programs have been successful at controlling clinical signs, these methods and theit success measured by time to return to baseline production (TTBP), expected losses, and the time to reach stability (TTS) (defined by no fecal shedding of the virus) need to be evaluated for continued use in the swine industty.