MDR1 - Multidrug Resistance 1 is a condition where collies can not be treated with some medicines that other dogs can be treated with, such as heartworm medication like Heartgard that contains Ivermectin. While other breeds can take Ivermectin with no issues, it can be fatal in Collies.
Collies can be treated with heartworm medication that contains milbemycin oxime like Interceptor or Interceptor Plus which is what we have all of our collies on regardless of their MDR1 status. MDR1 affects about 70% of Collies. For more information on MDR1 refer to our welcome page in the section on a Collies health. We will only ever breed Beauty to a mate that is MDR1 normal/normal. Therefore 100% of the pups will be MDR1 normal/mutant rather than M/M. You can take a MDR1 normal/mutant and breed them to a MDR1 normal/normal and get n/n and/or n/m. If you breed a n/m with another n/m you get any combination of */*; n/n, /n/m, m/m.
Regardless, I will have all of Beauty's pups DNA tested for MDR1 so I will know the results with certainty and so will their new owners.
Beauty's Test Results posted below.
AKC - DN35675007
MICROCHIP - 4C19082A0F
DOB - 1/28/2013
Colley Collies Midnight Beauty "Beauty" is out of Windy Acres Tip Of The Hat Fedora x Windy Acres Sienna Knight. Beauty is just that, a beautiful tri-color collie. She is very sweet to those people that she knows and very aloof to those that she doesn't. Once you earn her trust she is very loyal as most all collies are.