Important information about the DNA Test Control Scheme -
The following breeding control scheme has been agreed by
representatives of the Briard Clubs and the Kennel Club, effective
from 01 January 2013 :
1. All Briards used for breeding should be
either proven hereditarily clear of CSNB; or have
a CSNB DNA test before they are used for breeding.
2. Identified carriers may be used for breeding providing that
they are only mated to a Briard that is either
hereditarily clear or DNA tested clear of CSNB. Carriers should not
be mated to carriers and the Kennel Club will refuse to register
any progeny resulting from such a mating.
3. All of the offspring of a carrier mated to a clear should be
clearly identified, DNA tested and registered as either tested
clear or a carrier.
Distinguishing between clear, carrier and affected dogs
Clear dogs have no copies of the mutant gene
responsible for the condition and will neither develop the
condition nor pass the gene on to their offspring.
Carrier dogs have one copy of the normal gene
and one copy of the mutant gene; they will not develop the
condition, but will pass a mutant gene on to approximately half of
Affected dogs have two copies of the mutant
gene that causes the condition and will develop the
Congenital Stationary Night Blindness (CSNB)