Post-weaning diarrhea in pigs weaned without medicinal zinc: risk factors, pathogen dynamics, and association to growth rate

Table 2 Toxin and fimbriae types of hemolytic E. coli from weaned Danish piglets

Genotype	Producer A		Producer B
Genotype	All isolates^a	New (first or second) diarrhea cases	All isolates^a	New (first or second) diarrhea cases
F18 + STa + STb	144	21	4	1
F18 + STb + LT	0		16	7
F4 + STb + LT	0		3	2
F18	0		118	24
STa + STb	0		1	1
STb + LT	0		1	1
STb	4	1	5	2
No fimbria or toxins	19	3	49	4
Total	167		193
Missing values^b	17	2	19	11

Isolates were cultured from rectal swabs collected within the first 14 days after insertion to the nursery unit, and tested for F18 and F4, and STa, STb and LT
^aAll isolates including both systematically sampled pigs and samples from diarrhea cases
^bPCR results from 34 samples, where hemolytic E. coli was deemed dominant were missing. Of these, 13 were from new cases of diarrhea

ISSN: 2055-5660