Table 6.
Male progeny | Female progeny | |||||
Crosses | NS | S | H | NS | S | H |
1 P/p Sc/Sc Charolais bull1 × 6 p/p sc/sc Holstein cows2 | 1 | 2 | 1 | 1 | 0 | 1 |
1 P/p Sc/Sc Charolais bull1 × 5 p/p -/- Montbéliard cows3 | 0 | 1 | 2 | 2 | 0 | 0 |
Total | 1 | 3 | 3 | 3 | 0 | 1 |
1 P/P sc/sc Angus bull × 1 p/p Sc/- Charolais cow4 | 5 | 5 | 0 | 7 | 0 | 0 |
Total | 5 | 5 | 0 | 7 | 0 | 0 |
NS: non-scurred, S: scurred and H: horned.
1 This scurred bull (#5945 in Figure 1) was assumed to be P/p Sc/Sc according to the inheritance pattern for the scurs locus in the French Charolais breed.
2 In modern Holstein populations, allele Sc appears to be rare [20].
3 Data on the frequency of the scurs phenotype in this horned breed are not available.
4 Family CRBH3 [1,21]; assuming the specific inheritance of the scurs trait in the French Charolais breed, probabilities that this Charolais dam is p/p Sc/sc as assumed by Asai et al. [1] or p/p Sc/Sc are equal.