From: Udder health in beef cows and its association with calf growth
Outcome | Cow factor | Class | Number of cows with different numbers of quarters affected (QA) | Total numbers P-values | ||
---|---|---|---|---|---|---|
Quarters with SCC ≥200 000/ml | 0 QA | 1 QA | ≥2 QA | |||
Breed | Hereford | 23 | 12 | 0 | 35 | |
Cross bred | 8 | 5 | 4 | 17 | ||
Limousin | 12 | 3 | 6 | 21 | ||
Simmental | 12 | 9 | 8 | 29 | ||
Total | 55 | 29 | 18 | P = 0.008 | ||
Teat shape | Normal | 37 | 12 | 8 | 57 | |
Large funnel-shaped | 16 | 15 | 10 | 41 | ||
Total | 53 | 27 | 18 | P = 0.038 | ||
Udder shape | Normal | 48 | 17 | 15 | 80 | |
Pendulous | 7 | 12 | 3 | 22 | ||
Total | 55 | 29 | 18 | P = 0.012 | ||
Quarters with CMTa ≥3 | 0 QA | 1-4 QA | ||||
Teat shape | Normal | 52 | 5 | 57 | ||
Large funnel-shaped | 27 | 14 | 41 | |||
Total | 79 | 19 | P = 0.004 | |||
Udder shape | Normal | 68 | 12 | 80 | ||
Pendulous | 14 | 8 | 22 | |||
Total | 82 | 20 | P = 0.035 | |||
Quarters with any IMI | 0 QA | 1 QA | ≥2 QA | |||
Parity | 1 | 22 | 6 | 1 | 29 | |
2 | 13 | 2 | 3 | 18 | ||
3 | 6 | 7 | 3 | 16 | ||
4 | 8 | 7 | 0 | 15 | ||
5-6 | 8 | 5 | 3 | 16 | ||
≥7 | 4 | 3 | 1 | 8 | ||
Total | 61 | 30 | 11 | P = 0.083 | ||
Teat shape | Normal | 39 | 13 | 5 | 57 | |
Large funnel-shaped | 19 | 16 | 6 | 41 | ||
Total | 58 | 29 | 11 | P = 0.094 | ||
Blind quarter present | No | 58 | 25 | 8 | 91 | |
Yes | 3 | 5 | 3 | 11 | ||
Total | 61 | 30 | 11 | P = 0.031 | ||
Quarters with any major IMI | 0 QA | 1 QA | ≥2 QA | |||
Blind quarter present | No | 77 | 11 | 3 | 91 | |
Yes | 6 | 3 | 2 | 11 | ||
Total | 83 | 14 | 5 | P = 0.025 | ||
Quarters with CNSb IMI | 0 QA | ≥1 QA | ||||
Hygiene | 1 | 15 | 1 | 16 | ||
2 | 43 | 21 | 64 | |||
3-4 | 18 | 3 | 3 | |||
Total | 76 | 25 | P = 0.048 | |||
Quarters with S. aureus IMI | 0 QA | ≥1 QA | ||||
Blind quarter present | No | 80 | 11 | 91 | ||
Yes | 7 | 4 | 11 | |||
Total | 87 | 15 | P = 0.054 |