From: Insights into udder health and intramammary antibiotic usage on Irish dairy farms during 2003-2010
Herd size
SCC
< = 200
201-400
> 400
Q1
35.52
42.35
22.12
Q2
33.06
46.99
19.96
Q3
31.38
49.47
19.15
Q4
26.50
54.74
18.76