Table 2.

Prescription of antibiotics

Herd	Study period	Respiratory disease (ADD/100 pigs/day)	GI disease (ADD/100 pigs/day)	Locomotor system and CNS diseases (ADD/100 pigs/day)	Total (ADD/100 pigs/day)
1	Apr–Jul 2019	–	13.7	0.1	13.8
2	Apr–Jul 2019	–	6.3	0.5	6.9
3	Sep–Jan 2019/2020	–	6.9	0.2	7.1
4	Aug–Nov 2020	3.6	5.1	1.6	10.3
5	Aug–Nov 2020	–	5.2	0.6	5.8

Average animal daily dose (ADD) per 100 pigs per day of prescribed antibiotics against respiratory disease, gastrointestinal (GI) disease and locomotor/ central nervous system (CNS) diseases per herd