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Table 2 Studies that demonstrated lack of transmission of different swine viruses when PCR genome copies were present in SDP

From: Biosafety steps in the manufacturing process of spray-dried plasma: a review with emphasis on the use of ultraviolet irradiation as a redundant biosafety procedure

Virus PCR genome copies SDP inclusion level in feed Feeding duration Results Reference
PCV-2 2.47 × 105.0 8% 45 days Not infective [36]
PCV-2 106.7 4% 42 days Not infective [37]
PCV-2 7.56 × 105.0 8% 32 days Not infective [38]
HEV Positive 8% 28 days Not infective [39]
PEDV Positive (Ct: 30.1) 5% 14 days Not infective [40]
PEDV Positive 3–8% 7 to 14 days Not infective [41]
PRRSV Positive 3–8% 7 to 21 days Not infective [42]