Table 4 Parameter estimates for the final generalised linear mixed model for the individual animal risk of repeat breeder.
From: Characterisation of the Repeat Breeding Syndrome in Swedish Dairy Cattle
Variable | β | ORa (95% confidence intervals) | |
|---|---|---|---|
Intercept | -3.034 | n.a.b | |
FCM23c | -0.030 | 1.28 (1.20–1.36) | |
Lactation number: | Â | Â | |
   1 | -1.375 | n.a. | |
   2 | -0.629 | n.a. | |
   3+ | 0 | n.a. | |
Parturition | Â | Â | |
   Normal or not known | -0.119 | 0.89 (0.69–1.14) | |
   Difficult or dystocia | -0.301 | 1.35 (1.00–1.82) | |
   Twins (normal parturition) | 0 | 1 | |
Season at 1st service: | Â | Â | |
   January | -0.177 | 1.19 (1.07–1.33) | |
   February-March | -0.035 | 0.97 (0.88–1.06) | |
   April-September | -0.259 | 0.77 (0.70–0.85) | |
   October-December | 0 | 1 | |
RB in previous lactation: | Â | Â | |
   No | -1.084 | n.a. | |
   Yes | -1.414 | n.a. | |
   not known | 0 | n.a. | |
Days in milk at 1st serviced | -0.016 | 0.62 (0.59–0.66) | |
Veterinary treated e case of reproductive disorder | Â | Â | |
   Yes | -0.254 | 1.29 (1.09–1.52) | |
   No | 0 | 1 | |
Interaction lactation number*RB in previous lactation | Â | Â | |
   1 | No | -1.145 | 3.72 (2.65–5.23) |
   1 | Yes | -1.270 | 4.57 (2.84–7.34) |
   1 | not known | 0 | 3.96 (2.76–5.67) |
   2 | No | -0.631 | 2.95 (2.10–4.14) |
   2 | Yes | -0.699 | 3.84 (2.54–5.80) |
   2 | not known | 0 | 1.88 (1.22–2.88) |
   3+ | No | 0 | 2.96 (2.11–4.14) |
   3+ | Yes | 0 | 4.11 (2.76–6.14) |
   3+ | not known | 0 | 1 |