Table E.1: Bacteriological finding, clinical mastitis or somatic cell counts reported for tie‐stall systems
| Country | n (a) | ø herd size (range) | Variable | Level | Measure | Mean/prevalence | Reference |
|---|---|---|---|---|---|---|---|
| Bacteriological findings (BACT) | |||||||
| CAN | 372 | 84 | S. aur. in BM (e) , (b) | Herd | Prev. | 61% | Bauman et al. (2018) |
| Clinical mastitis (CM) | |||||||
| CAN | 35 | 65 | CM/100 cow‐yrs at risk | Herd | Prev. | 23.7% | Levison et al. (2016) |
| NO | 812 | 27 (15–55) | CM/cow | Herd | Prev. | 0.21 | Simensen et al. (2010) |
| CAN | 180 | (33–345) | CM incidence | Lactation | Incidence | 8.8% | Elghafghuf et al. (2014) |
| Somatic cell count (SCC) | |||||||
| USA | 56 | na | BMSCC | Herd | Mean | 260 | Eckelkamp et al. (2016) |
| NO | 812 | 27 (15–55) | BMSCC | Herd | Mean | 125; 145 (b) , (c) | Simensen et al. (2010) |
| CAN | 11,019 | na | gBMSCC | Herd | Mean | 212 | Bauman et al. (2018) |
| CAN | 35 | 65 | gBMSCC | Herd | Mean | 241 | Levison et al. (2016) |
| FI | na (c) , (d) | na | CSCC | Cow | Mean | 179.1 | Hiitio et al. (2017) |
| na (c) , (d) | na | SCC ≥ 200 in ≥ 1 of 4 test days | Cow | Prev. | 18.7% | ||
| na (c) , (d) | na | SCC ≥ 200 in ≥ 13 of 4 test days | Cow | Prev. | 14.8% | ||
| USA | 201 | na | SCS | Herd | Mean | 2.7; 3.0; 2.9 (d) , (e) | Dechow et al. (2011) |
(a)
Number of farms.
(b)
Staphylococcus aureus in bulk tank milk.
(c)
Small (20 cows); large herds (> 50 cows), both provided only graphically.
(d)
18.7% of 273,012 cows.
(e)
Confined; with outdoor access and TMR; with outdoor access and component feeding.