| |
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.
