Bas RougeBeauceron Database
| Name | Fer Jean-yves |
| Affix | De Trezival |
| City | Kergloff |
| 1st litter | 1992 |
| Last litter | 2001 |
| Dogs | 24 |
| Puppies / litter | 4.8 |
| Litters / year | 1.0 |
| Litters / bitch | 2.5 |
| Youngest dam (1st litter) | Elsa de Fantanroue · 2a 3m |
| Oldest dam (last litter) | Elsa de Fantanroue · 7a 2m |
| Studs | Bitches | |
| Total | 4 | 2 |
| Tested | 1 | 0 |
| 2001 | |
| 2000 | |
| 1996 | |
| 1995 | |
| 1992 |
| Name | Litters | 1st litter | Last litter |
| Leale de Trezival | 2 | 2000 | 2001 |
| Elsa de Fantanroue | 3 | 1992 | 1996 |