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

Table 4 Time-to-event and producer-wise distribution of first cases of post-weaning diarrhea with different assumed etiologies

Assumed etiology at first cases of diarrhea	Time to diarrhea event (days)^a			Producer A		Producer B
Assumed etiology at first cases of diarrhea	25th pctl	Median	75th pctl	n	%	n	%
ETEC	9	10	11.25	12	20.3	2	3
Hemolytic non-ETEC E. coli	7.5	10	11	1	1.7	23	34.3
Rotavirus A	2	3	4	34	57.6	13	19.4
ETEC and rotavirus A	7	10	11	3	5.1	2	3
Hemolytic non-ETEC E. coli and rotavirus A	4.5	6	8.75	1	1.7	9	13.4
No detection of hemolytic E. coli, ETEC or rotavirus A^b	3	6	11	5	8.5	11	16.4
Unknown etiology (missing data)	3	5	11	3	5.1	7	10.5

Summary of post-weaning diarrhea cases with different assumed infectious etiologies occurring in a cohort of piglets followed for 14 days after insertion into two Danish indoor nursery units. Data is presented as the median, 25th and 75th percentiles of the time to first diarrhea event, and as the number and percentage of first events of diarrhea at the two different producers (producer A and B)
^aThe prevalent cases at the day of insertion were not included in the calculations
^bRotavirus, hemolytic E. coli & ETEC were detected in some of these pigs, but below the defined threshold (CT > 33) or the semi-quantitative criteria for dominance

ISSN: 2055-5660