Tibial Hemimelia (TH):|
Hemimelia (TH) Carriers in Shorthorn Cattle
ASA Genetic Defect Status List
ASA Genetic Defect Policy
ASA Genetic Defect Protocol
New ASA DNA Procedures
TH Free Sire list on
Tibial Hemimelia Article
University of Nebraska's Cattle Congenital Disease Program
TH = Tibial Hemimelia
Pictures of 3 TH Calves
Matings with bulls that are documented TH carriers will result in
one of three outcomes:
1. The calf will be born TH-free; neither
afflicted nor a carrier.
The down side is there is
currently no test that distinguishes this outcome from #2.
2. The calf will be physically fine, but a
3. The calf will be afflicted with the
characteristics described below.
TH manifests as:
1. lesions included
bilaterally malformed or absent tibia and abdominal hernia in all
2. a long shaggy
testicles in males
which are protrusions of the coverings of the spinal cord or brain.