Table 3 Herd level prevalence of beef cows with at least one udder quarter with subclinical mastitis (SCC ≥200 000/ml), intramammary infection (IMI) of any bacteria, Staphylococcus aureus IMI , or no milk production (blind quarter) within a month after calving and at weaning in 10 beef cow herds
From: Udder health in beef cows and its association with calf growth
Variable | After calving | At weaning | ||
|---|---|---|---|---|
Number of herds with ≥1 cow affected | Proportion of cows affected per herd median (range) | Number of herds with ≥1 cow affected | Proportion of cows affected per herd median (range) | |
SCC ≥200 000/ml | 10 | 52 (18–67) | 9 | 69 (0–90) |
Any IMI | 9 | 38 (0–67) | 10 | 43 (22–60) |
S. aureus IMI | 7 | 13 (0–33) | 9 | 21 (0–33) |
Blind quarter | 6 | 9 (0–40) | 4 | 0 (0–40) |