Table 1 Descriptive statistics (median with inter-quartile range within parenthesis) for herds classified in thirds according to frequency of repeat breeder (RB)a.
From: Characterisation of the Repeat Breeding Syndrome in Swedish Dairy Cattle
Variable | RB-class 1 (n = 489) | RB-class 2 (n = 527) | RB-class 3 (n = 525) |
|---|---|---|---|
RB % | 2.4 (0–3.8) | 7.5 (5.9–9.1) | 15.4 (12.5–19.0) |
Herd size | 31 (26–40) | 30 (23–42) | 28 (21–37) |
Herd average FCM23b | 27.8 (25.8–29.8) | 27.9 (26.2–29.9) | 28.0 (25.9–29.9) |
Herd average days from calving to 1st AI | 82.6 (75.4–90.4) | 79.3 (73.3–87.2) | 77.1 (71.1–83.9) |
Herd incidence reproductive disorders | 0.04 (0.00–0.07) | 0.04 (0.00–0.07) | 0.04 (0.00–0.08) |
Voluntary waiting period | 55 (50–61) | 55 (50–59) | 53 (48–58) |
Prebreeding estrus detection efficiency | 0.51 (0.39–0.61) | 0.53 (0.43–0.63) | 0.55 (0.45–0.65) |
Postbreeding estrus detection efficiency | 0.57 (0.43–0.70) | 0.58 (0.45–0.70) | 0.58 (0.47–0.69) |