Survival of porcine epidemic diarrhea virus (PEDV) in thermally treated feed ingredients and on surfaces

Table 3 Survival of Porcine Epidemic Diarrhea virus (PEDV) in feed and feed ingredients when thermally treated

Temperature	Average δ ^1,2 (min)	Shape Paremeter³	Adj. R²	Log reduction at 10 min¹	Log reduction at 15 min¹	Log reduction at 30 min¹
60 °C	4.4^a ± 3.5	0.50	0.83	1.7^a ± 0.4	2.0^a ± 0.4	2.4^a ± 0.4
70 °C	3.7^b ± 3.7	0.45	0.84	1.9^a ± 0.5	2.3^a ± 0.4	2.7^a ± 0.7
80 °C	2.4^b ± 1.8	0.50	0.85	2.2^b ± 0.3	2.8^b ± 0.8	3.4^b ± 0.9
90 °C	2.3^b ± 1.9	0.60	0.84	2.6^c ± 0.9	3.3^c ± 1.1	3.9^c ± 0.8
P-Value	0.0002			0.0001	0.0001	0.0001

¹Different letters in the same column differ at P < 0.05
² δ is the time of the first log reduction of virus concentration
³The shape parameter (n) indicates the shape of the curve with a value n > 1 forming shoulders and being convex, n < 1 forming tails and being concave, and n = 1 being linear

ISSN: 2055-5660