Table 4 The effect of classical inbreeding (F), new inbreeding (New), ancestral inbreeding as defined by Kalinowski et al. [21] and Ballou [12], as well as the interaction between classical inbreeding and Ballou ancestral inbreeding (F*Ballou) on calving interval (days), age at first calving (days) and survival to second lactation (0/1*100) when each of these terms were individually included in a multiple regression model with confounding effects adjusted for1,2.
From: Purging of inbreeding depression within the Irish Holstein-Friesian population
F | New | Kalinowski | Ballou | F*Ballou3 | |
|---|---|---|---|---|---|
Calving interval | 0.54 (0.220) | 4.14 (1.253) | 0.55 (0.254) | 0.81 (0.213) | 0.09 (0.044) |
Age at first calving | 0.48 (0.096) | 3.09 (0.582) | 0.52 (0.110) | 0.44 (0.105) | 0.05 (0.021) |
Survival | -0.29 (0.092) | -1.03 (0.533) | -0.35 (0.106) | -0.16 (0.090) | 0.01 (0.019) |