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1HP00824 Stocker - Hyprotrichosis Carrier
The American Hereford Association has been identifying animals with “Hyprotrichosis” HY is a genetic recessive resulting in partial to almost complete lack of hair. Affected calves are often born with very short, fine, kinky hair that may fall out leaving bare spots or areas particularly susceptible to rubbing. The condition may vary in expression as the animal matures and is usually less noticeable in older animals. The haircoat color will sometimes appear "frosted" or "silverish." In addition the tail switch may be underdeveloped.
While not technically a lethal trait, from the above description from the American Hereford website, it is clearly a serious genetic defect. The CRI bull 1HP0824 RV Stocker 6662 has been identified as a carrier of this recessive. As we have with other bulls carrying deleterious recessives, BOS Trading will immediately stop marketing semen from Stocker effective October 20, 2010. Since we do have an accurate test to identify the carriers, breeders can be certain the bulls listed as HYF do not carry the mutation and can be used with confidence. For more information on identified carrier bulls, please visit the American Hereford website (Hereford.org), and go to the records tab under “seedstock producers”.
If you have purchased semen on the Stocker bull within the past 12 months and you have still semen left over, BOS will issue a credit on your account for these units. Contact your local representative to initiate this process and for instructions on returning the semen. CRI will not replace semen that has been used already. Remember only half of the offspring from these bulls will be carriers and an affected calf will occur only one in four times when two carriers are mated. If any effort has been made to avoid inbreeding, we would not expect to have any affected calves on this sire.
Research Update on Hydrocephalus - Jonathan E. Beever, Ph.D.
Earlier this year the American Angus Association, via Dr. Steffen at the University of Nebraska-Lincoln, posted a request for reporting of calves having a phenotype referred to as hydrocephalus. As Dr. Steffen described in the request, these calves have a severe phenotype that includes an extremely large cranium with little or no brain and spinal cord present. More.....
Idiopathic Epilepsy (IE) in Hereford Cattle
Symptoms: Age of onset (occurrence of the first seizure) can be variable, ranging from birth to several months of age. Occurrence and persistence of seizures may be influenced by environmental stressors such as temperature extremes. More...
Osteopetrosis "Marble Bone Disease" Update
Researchers find Causal Mutation
A collaborative effort of scientists at USDA MARC, USDA BARC, University of Illinois, University of Nebraska-Lincoln, University of Maryland and University of Wyoming has identified a mutation causing Osteopetrosis (OS) in Red Angus cattle. More...
An Update on Arthrogryposis Multiplex in Cattle - Jonathan Beever, University of Illinois
Since September 8, 2008, researchers at the University of Illinois and the University of Nebraska, in collaboration with the American Angus Association, have been investigating the genetic condition called Arthrogryposis Multiplex (AM), commonly referred to as "Curly Calf Syndrome (CCS)" in Angus cattle. More...