The TH genetic defect (Tibial Hemimelia) is an extremely serious problem for any beef cattle breeder - of ANY breed! The Shorthorn breed seems to be plagued with this anomaly to a greater extent than other breeds, although all breeds of all livestock ( and Humans too ) have genetic problems to one degree or another. However, the Shorthorn breed has a higher incidence of this TH allele manifesting itself than is acceptable, and beginning January 1, 2006 all AI sires, doner dams, and cloned animals ( :shock:
) must be DNA genotyped, parentally verified, and genetic defect tested with results reported to the Shorthorn Association.
Also beginning January 1, 2006, AI certificates and donor dam certificates will be issued
regardless (my emphasis) of genetic defect status if genetic defect test results have been reported to the ASA. :shock: :?
The following is MY OPINION AND MY OPINION ONLY!: Any group, whether it be an Association or Breeder or group of breeders who willfully and knowingly will breed an animal who is a Homozygous OR Heterozygous Carrier of TH, without acknowledging the existance of that defect to a potential buyer, or sell semen from one of those carriers without informing them of the problem should be legaly prevented from continuing that practice, or continuing as a Cattle breeder! This should be considered as a criminal act!
The problem that is concomitant with as insidious a defect as TH is, seems to confuse the issue considerably! This genetic defect, as are all genetic defects, can cross into OTHER breeds as well and could potentially destroy entire breeding herds at the cost of millions of dollars!
This condition should be recognized by ALL breed Associations for the terrible consequences which could occur as a result of cross breeding and insist that the Shorthorn Association take IMMEDIATE and restrictive steps to STOP this condition in it's tracks. It seems to me that they (The Shorthorn Association) are playing "softball patty-cake Politics" with the entire affair!
Just my Opinion!
DON'T GET ME STARTED!
DOC HARRIS