Cross-sectional study: prevalence of oedema disease Escherichia coli (EDEC) in weaned piglets in Germany at pen and farm levels

Table 4 Efforts and challenges of sampling methods used in this study

Sample type or sampling device, respectively	Average on-hand time per sample (min)		Number of samples
	At pen site	In the laboratory (culture + PCR \| DNA extraction + PCR)	Total	Technical problems
	At pen site	In the laboratory (culture + PCR \| DNA extraction + PCR)	Total	N	Portion (%)
Single faecal sample	1	18 \| –	2405	0	0.0
Pair of PP nonwoven socks
Boot swab sample	2	23 \| 25	479	0	0.0
Chewing rope
Oral fluid sample	33^a	18 \| 21	450	125	27.8
Rope wash out sample	32^a	24 \| 28	450	125	27.8

ISSN: 2055-5660