Table 2 Mating types, genotypes and breed compositions represented in the Angus × Hereford data set
Mating type | Genotypes | N |
|
|
|
|---|---|---|---|---|---|
Parental | ANGUS | 711 | 1.00 | 1.00 | 1.00 |
Parental | HEREFORD | 431 | 0.00 | 0.00 | 0.00 |
Inter-se | F1(H × A) | 393 | 0.50 | 0.00 | 1.00 |
Inter-se | F1(A × H) | 301 | 0.50 | 1.00 | 0.00 |
Inter-se | F2(HA × HA) | 235 | 0.50 | 0.50 | 0.50 |
Inter-se | F2(AH × AH) | 183 | 0.50 | 0.50 | 0.50 |
Inter-se | F3(F2 × F2) | 254 | 0.50 | 0.50 | 0.50 |
Inter-se | F4(F3 × F3) | 104 | 0.50 | 0.50 | 0.50 |
Back-cross | B1(A × HA) | 78 | 0.75 | 1.00 | 0.50 |
Back-cross | B1(A × AH) | 72 | 0.75 | 1.00 | 0.50 |
Back-cross | B1(H × HA) | 77 | 0.25 | 0.00 | 0.50 |
Back-cross | B1(H × AH) | 67 | 0.25 | 0.00 | 0.50 |
Back-cross | B1(AH × A) | 180 | 0.75 | 0.50 | 1.00 |
Back-cross | B1(HAxH) | 132 | 0.25 | 0.50 | 0.00 |
Rotational | R3[A × B1(H × HA)] | 77 | 0.63 | 1.00 | 0.25 |
Rotational | R3[A × B1(H × AH)] | 51 | 0.63 | 1.00 | 0.25 |
Rotational | R3[H × B1(A × HA)] | 96 | 0.38 | 0.00 | 0.75 |
Rotational | R3[H × B1(AH × A)] | 51 | 0.38 | 0.00 | 0.75 |
Rotational | R4(A × R3) | 67 | 0.69 | 1.00 | 0.38 |
Rotational | R4(H × R3) | 68 | 0.31 | 0.00 | 0.63 |
Advanced | F3 × F1(HA) | 19 | 0.50 | 0.50 | 0.50 |
Advanced | F3 × F1(AH) | 27 | 0.50 | 0.50 | 0.50 |
Advanced | F3 × F4 | 30 | 0.50 | 0.50 | 0.50 |
Advanced | A × R4 | 21 | 0.66 | 1.00 | 0.31 |
Advanced | H × R4 | 24 | 0.34 | 0.00 | 0.69 |
TOTAL | Â | 3749 | Â | Â | Â |
, 
, 
: individual, sire and dam expected proportion of Angus genes (breed composition)- Mating types and genotypes are described in Morris et al. [25]; breed compositions are key features within the multibreed analysis: they are used both for computing the inverses of the partial numerator relationship matrices and as regressor variables for fitting the mean effects of breed groups