In responsible Rottweiler breeding, few topics are as misunderstood as whether carrier dogs should be used in breeding programs. Conditions like JLPP, LEMP and NAD create unnecessary fear, often leading breeders to eliminate genetically valuable dogs.

At Craffenheim Rottweilers, our stance is scientific, internationally supported, and essential to preserving true German ADRK bloodlines. Carrier Rottweilers Are Healthy — and Safe to Breed From

A crucial genetic fact: a carrier is NOT an affected dog.

Carrier dogs:
Show no symptoms
Live full, healthy lives
Produce 100% healthy puppies when paired with a DNA-clear partner

At Craffenheim Rottweilers, we breed Carrier × Clear, guaranteeing zero affected puppies and preserving vital pedigrees. Every puppy from such litters is individually DNA tested at birth through South Africa’s top accredited laboratory.

Why Eliminating Carrier Dogs Damages the Rottweiler Breed
Removing all carriers sounds responsible, but it is scientifically harmful.

1. It Shrinks the Gene Pool
Eliminating carriers wipes out dogs with:
Excellent working ability
Superior structure
Stable temperaments
Valuable ADRK German lineage

This forces inbreeding and increases long-term health risks.

2. It Erases Old German ADRK Bloodlines
Many world-class German lines include carriers. Erasing them means losing the foundations of the modern Rottweiler.

3. Mutations Cannot Be Eradicated by Avoidance
But they can be eliminated safely through: Carrier → Clear over one or two generations. Craffenheim has repeatedly achieved this while preserving type, temperament and health.

Consequences of a Reduced Gene Pool A narrowed genetic base leads to:
More cancer
Autoimmune diseases
Fertility problems
Weak immune systems
Reduced lifespan
Poor structural soundness

Ironically, avoiding carrier dogs “for health” often creates more health issues. Genetic diversity is the backbone of a strong, healthy breed.

Craffenheim Rottweilers: Science-Led, Ethical, Responsible Every breeding decision is guided by:
✔ Full DNA screening through SA’s most advanced genetic lab
✔ Scientific knowledge of inheritance
✔ ADRK-aligned ethics
✔ Preservation of German working and show lines
✔ Zero-risk pairings (Carrier × Clear)
✔ Individual puppy DNA testing

 We do not guess. We do not gamble. We do not discard genetically valuable dogs out of fear. We use data, science and responsible pairing to strengthen the Rottweiler in South Africa.

Leading the Way in Genetic Stewardship
Craffenheim’s approach:
Protects historic ADRK bloodlines
Maintains genetic diversity
Produces healthy, stable, confident Rottweilers
Eliminates harmful genes safely
Sets a high scientific standard in South Africa

Using carrier dogs responsibly is not risky — it is critical for the future of the breed. The Future of the Rottweiler Depends on Science, Not Fear. 

You do not protect the Rottweiler by eliminating its genetics. You protect it by managing genetics responsibly. At Craffenheim Rottweilers, we proudly uphold science-driven, ethical breeding that preserves the true German ADRK Rottweiler for generations to come.

retha@craffenheimrottweilers.co.za