An evaluation of contaminated complete feed as a vehicle for porcine epidemic diarrhea virus infection of naïve pigs following consumption via natural feeding behavior: proof of concept

Table 1 Temporal relationship between the delivery of “at-risk” feed and the onset of clinical PED in the index cases across the 3 affected breeding herds

Farm	A	B	C
Delivery of at risk feed	January 6	January 8	January 9
Date feed consumed	January 6-7	January 8-9	January 10
Consumed by*	Gestating sows Developing gilts	Farrowing sows	Gestating sows
PEDV Ct in feed	20.25	22.20	19.50
Onset of clinical signs	January 9	January 10	January 12
Index cases*	Gestating sows Developing gilts	Farrowing sows	Gestating sows
Date of PEDV diagnosis	January 9	January 11	January 13

*Supplementary information: The same animals which consumed at-risk feed from the respective feed bins demonstrated clinical signs of PEDV. Specifically, affected gestation sows were located in exterior row of stalls in west gestation facility of Farm A while gilts were located in room 2 of the developer facility. Affected farrowing sows were located in the west lactation room of Farm B. Affected gestation sows were located in the exterior row of the north gestation facility in Farm C.

ISSN: 1746-6148