Treatment of shoulder ulcers in sows – rubber mats and zinc ointment compared to chlortetracycline spray

Table 2 Size of ulcers on day 1, day 14 and day 21 among 299 sows treated for shoulder ulcers

Day of observation	Number of observations	Median size of ulcer (cm²)	90% Percentile interval (cm²)
Day 1^a – based on day 14
Mat and zinc	151	1.8	0.0-10.7
Cutaneous antibiotic treatment	148	1.6	0.0-12.0
Day 1^b – based on day 21
Mat and zinc	117	1.4	0.0-11.0
Cutaneous antibiotic treatment	103	1.0	0.0-9.8
Day 14
Mat and zinc	151	2.0	0.0-14.2
Cutaneous antibiotic treatment	148	7.8	0.0-19.4
Day 21
Mat and zinc	117	1.3	0.0-10.5
Cutaneous antibiotic treatment	103	5.1	0.0-17.1

^a: This reflects the side of the shoulder where the ulcer was largest on day 14, in case there was an ulcer on both shoulders.
^b: This reflects the side of the ulcer that was largest on day 21.

ISSN: 1751-0147