Table 3 Distribution of claw trimming routines in 559 Norwegian dairy herds by DD category (DD+/DD−) stratified on housing system
From: A case–control study regarding factors associated with digital dermatitis in Norwegian dairy herds
Trimming routines | Free stalls | Tie stalls | ||
|---|---|---|---|---|
DD+ (n = 108) | DD− (n = 281) | DD+ (n = 5) | DD− (n = 165) | |
n (%)b | n (%)b | n (%)b | n (%)b | |
Certified prof trimmer trims ≥ 90% of cowsa | ||||
No | 5 (4.6) | 42 (14.9) | 0 | 24 (14.5) |
Yes | 103 (95.4) | 239 (85.1) | 5 (100) | 141 (85.5) |
Missing | 0 | 0 | 0 | 0 |
Uncertified prof trimmer trims ≥ 30% of cowsa | ||||
No | 104 (96.3) | 259 (92.2) | 5 (100) | 150 (90.9) |
Yes | 4 (3.7) | 22 (7.8) | 0 | 15 (9.1) |
Missing | 0 | 0 | 0 | 0 |
Owner trims ≥ 30% of cowsa | ||||
No | 108 (100.0) | 260 (92.5) | 5 (100) | 156 (94.5) |
Yes | 0 | 21 (7.5) | 0 | 9 (5.5) |
Missing | 0 | 0 | 0 | 0 |
Trimming frequency a | ||||
< 1/year | 10 (9.3) | 66 (23.5) | 0 | 65 (39.4) |
1<2/year | 33 (30.6) | 116 (41.3) | 2 (40.0) | 81 (49.1) |
2<3/year | 48 (44.4) | 85 (29.2) | 3 (60.0) | 19 (11.5) |
≥ 3/year | 17 (15.7) | 14 (5.0) | 0 | 0 |
Missing | 0 | 0 | 0 | 0 |
Cleaning of feet in chute before trimming | ||||
No | 54 (50.0) | 179 (63.7) | 2 (40.0) | 93 (56.4) |
Yes | 47 (43.5) | 69 (24.6) | 3 (60.0) | 53 (32.1) |
Uncertain | 7 (6.5) | 33 (11.7) | 0 | 19 (11.5) |
Missing | 0 | 0 | 0 | 0 |
All cows trimmed/ examined at routine trimming | ||||
No | 11 (10.2) | 39 (13.9) | 0 | 9 (5.6) |
Yes | 97 (89.8) | 241 (86.1) | 5 (100) | 152 (94.4) |
Missing | 0 | 1 | 0 | 4 |
All pregnant heifers trimmed/ examined at routine trimming | ||||
No | 78 (72.9) | 206 (74.1) | 3 (60.0) | 96 (58.9) |
Yes | 29 (27.1) | 70 (25.2) | 2 (40.0) | 64 (39.3) |
Uncertain | 0 | 2 (0.7) | 0 | 3 (1.8) |
Missing | 1 | 3 | 0 | 2 |
Trimming chute and equipment look clean at arrival | ||||
No | 1 (0.9) | 1 (0.3) | 0 | 1 (0.6) |
Yes | 104 (96.3) | 275 (97.9) | 5 (100) | 161 (98.8) |
Uncertain | 3 (2.8) | 5 (1.8) | 0 | 1 (0.6) |
Missing | 0 | 0 | 0 | 2 |