There is an unusual increase of the returns-to-oestrus at 31-39 days. The majority are due to sows previously negative to the pregnancy ultrasound testing, and the returns-to-oestrus happened before 42 days.
This farm produces its own gilts from grandmother sows, but taking advantage of the adaptation to meet the needs of the welfare law it was decided to increase its capacity from 600 sows to 1,200.
On the finisher sites, the farmer noticed that the growing pigs in all the farm sheds had become dull and lame.
None of the employees on this farm had ever seen TGEv before, but were concerned that is what they were seeing.
Ileitis can take different forms, and it is frequent that a subclinical and a more severe and clinical form coincide.
This particular case occurred in a multisite farrow to finish operation in South Western Ontario, Canada.
One month after the beginning of the outbreak of reproductive failure in sows, acute respiratory disorder and diarrhoea that was non-responsive to antibiotics started in weaned pigs aged 6-8 weeks...
There was a sudden increase in mortality in a site 2 farm with the loss of the "biggest piglets" in the group.No particular symptomatology was seen but every day some dead piglets were found.
A sudden death of animals, with no prior symptoms of disease, and clinical symptoms such as massive facial, ears and forechest oedema, as well as an increase of body temperature to 41.5ºC, were observed.