Breeding suitability guide — Biewer Terrier
For breeders: which tests, which thresholds, which mating rules apply
1. Mandatory tests for parents
These tests must be on file for every breeding animal.
| Test / condition | Scoring scheme | Approved from | Inheritance | Source |
|---|---|---|---|---|
| Brachycephalic obstructive airway syndrome (BOAS) (BOAS) | Physisch | bestanden | Complex | VDH |
| Progressive Retinal Atrophy 1 (Golden Retriever) (GR-PRA1) | DNA | Genstatus frei (N/N) oder Überträger (+/-) nur mit freiem Partner | Autosomal recessive | VDH |
| Progressive Retinal Atrophy (PRA) (PRA) | — | PRA frei | Autosomal recessive | VDH |
| Cataract (HC) | Augen | ohne Befund | Complex | VDH |
| Lens luxation (PLL) | Augen | Clear or Carrier | Autosomal recessive | HD-Curated |
| Patellar Luxation (PL) | Physisch | 0 | Polygenic | VDH |
| Heart disease | Physisch | ohne Befund | Complex | VDH |
| Chiari-like malformation (CM) and syringomyelia (SM) (CM/SM) | Roentgen | neurologisch unauffällig | Complex | VDH |
2. Mating rules
When one parent has a borderline result, the other parent must meet specific criteria.
Patellar Luxation (PL)
Polygenisch — beide Elterntiere sollten mindestens das Ergebnis "0" erreichen. Idealerweise besser. Phenotypen aus belasteten Linien sollten nicht für die Zucht herangezogen werden.
VDH3. Recommended additional tests
Sensible additions for line planning.
| Test / condition | Scoring scheme | Approved from | Inheritance | Source |
|---|---|---|---|---|
| Legg-Calvé-Perthes disease (LCPD) | Roentgen | Normal | Complex | AI-Vet |
| Degenerative Myelopathy (DM) | DNA | Clear or Carrier | Autosomal recessive | AI-Vet |
| Hyperuricosuria (HUU) | Koerperfluessigkeiten | Clear or Carrier | Autosomal recessive | AI-Vet |
| Portosystemic hepatic encephalopathy (PSS) | — | Normal | Complex | AI-Vet |
4. HonestDog verification
- Upload a legible certificate (PDF or photo) per test in the breeder dashboard
- Certificate must show date, examining vet, and FCI/VDH logo
- Certificates older than 36 months are flagged as stale
- We check each upload for authenticity — the profile tile then shows 'verified'