Incidence of salmonellosis and identification of serogroups and serotypes in a XXXX commercial farm in Yucatan.

@entity2491 @entity1707 @entity45562 @entity1
A study was conducted in order to detect the presence of @entity2491 spp in fattening @entity1707 , to identify the serogroups present and to determine the sensibility to the antibiotics more used in the region. The farm was a breeding farm of a multiple-site system. Of the total farrowings of a week, 55 sows and one piglet from each sow were selected. All @entity1707 were negative to @entity2491 spp. at the star of the study. Piglets were monitored from day two of age (six times; every 23 days approximately) up to finishing (23 weeks of age). Samples of feces (1 g/animal) were collected directly from the @entity1707 's rectum. The first positive @entity1707 was found at the second sampling (25 days) and the highest number of positive cases in the fifth sampling (117 days). The cumulative incidence was 52.7%. Thirty-four out of the 40 Salmonellas isolated corresponded to the @entity45562 and 6 to the C2 serogroup. The serotypes found in the @entity45562 were: @entity2491 (28/34) and S. agona (6/34). Regarding serogroup C2 these were: S. romanby and S ajiobo. @entity2491 spp @entity45562 included three of the serotypes more commonly isolated in @entity1 : @entity2491 , S. agona and S. heidelberg.
