A culture has confirmed swine dysentery on a Suffolk wean-to-finish unit, despite there being no clinical signs in the animals.
The pathogen was isolated during routine sampling after the unit noticed reduced performance.
Mild looseness but no signs of blood or mucus were reported.
See also: Swine dysentery cases continue to rise
Latest reports are unable to say how long the pathogen may have been present on farm because of an absence of clinical signs and no suspected swine dysentery at previous vet visits.
An AHDB notification said: “It is important that a heightened level of biosecurity and monitoring for clinical signs are observed over the next few weeks, especially within the Suffolk region.”
A full cull and clean down is planned for the unit.
A culture was used in the absence of a PCR (polymerase chain reaction) test.