Table 3 The association of the mean monthly cumulative incidence of clinical ketosis with potential risk at the study farm (N = 7511)
From: Cumulative incidence of ketosis in fresh lactating cows: a case study in the United Arab Emirates
Risk factors | Category | No. of tested cows | No. of positive for CK | % ± SEM | χ2 | p value |
|---|---|---|---|---|---|---|
Study year | 2019 | 1699 | 23 | 1.35 ± 0.28 | 31.03* | < 0.01 |
2020 | 1763 | 9 | 0.51 ± 0.17 | |||
2021 | 1983 | 6 | 0.30 ± 0.12 | |||
2022 | 2066 | 2 | 0.01 ± 0.07 | |||
Season | Summer | 1942 | 11 | 0.57 ± 0.17 | 5.46 | 0.141 |
Autumn | 2119 | 5 | 0.24 ± 0.11 | |||
Winter | 1706 | 11 | 0.64 ± 0.19 | |||
Spring | 1744 | 13 | 0.75 ± 0.21 | |||
Body score | 1.0–3.0 | 1917 | 9 | 0.47 ± 0.16 | 1.63 | 0.443 |
3.1–4.0 | 3401 | 22 | 0.65 ± 0.14 | |||
4.1–5.0 | 1059 | 9 | 0.85 ± 0.28 | |||
Parity | Parity 1 | 2819 | 6 | 0.21 ± 0.09 | 27.87* | < 0.0001 |
Parity 2 | 2238 | 6 | 0.27 ± 0.11 | |||
Parity 3 | 1134 | 11 | 0.97 ± 0.29 | |||
Parity 4 | 671 | 11 | 1.64 ± 0.49 | |||
Parity 5 | 326 | 4 | 1.23 ± 0.61 | |||
Parity 6 | 182 | 1 | 0.55 ± 0.54 | |||
Parity 7 | 141 | 1 | 0.71 ± 0.70 |