TH (TIBIAL HEMIMELIA):
TH is a lethal genetic defect when an animal inherits two copies of the recessive gene (sire and dam). Calves are born with severe deformities including twisted back legs with fused joints, large abdominal hernias and/or skull deformities. If calves survive the birthing process, they cannot stand and do not survive long. (Canadian Shorthorn Association)
TH testing began in Ireland in 2009, and while there are some Tested TH Free herds in Ireland, we encourage breeders to continue to test their unverified animals. Note: it is not a requirement to test animals to receive a pedigree certificate, however, it is good practice when breeding Pedigree Shorthorn Cattle.
TESTING FOR TH:
To test animals for the TH genetic defect, follow these steps:
1. Collect Hair Samples: Get a hair samples from each animal.
2. Prepare the Samples: Place each sample in a separate zip-lock bag (freezer bag). Include a piece of paper in each bag with the following details:
- Animal TAG Number
- Your Herd Number
- Your Name, Address, and Phone Number
- TH Test Required for This Animal
Results Preference: Specify that results should be sent to both the breeder and directly to the society if you wish.
3. Packaging and Posting: Once the samples are prepared, send them to the following address:
TH Testing,
Weatherbys Scientific,
Unit F1 – M7 Business Park,
Newhall, Naas,
Co. Kildare.
4. Contact Information: If you need any assistance or have questions about the TH testing process, you can contact Weatherbys at +353 (0)45 875521.
5. Payment: Weatherbys will reach out to you directly to arrange payment for the testing