Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms

Table 4 Results for Salmonella isolation ^a and Salmonella seroprevalence ^b in weaned sows from 5 farms

Farm	No. of fecal samples	No. of + fecal samples (%)	No. of serum samples (%)	No. seropositive samples (%)^b
A	40	16 (40)	144	82 (56.9)
B	40	9 (22.5)	134	115 (85.8)
C	40	13 (32.5)	134	98 (73.1)
D	47	1 (2.1)	158	129 (81.6)
E	47	8 (17)	116	70 (60.3)
Total	214	47 (21.9)	686	494 (72)

^aISO 6579:2002/Amd 1:2007.
^bConsidering a cut-off value OD% ≥ 40% (Herdcheck Swine Salmonella ELISA test, IDEXX Laboratories, USA).

ISSN: 1297-9716