The higher density tests GGP-50K and GGP uLD-30K provide parentage and are also used in the genetic evaluation to add accuracy and information to the calculated EPD. The Parentage Panels do not provide this benefit, other than ensuring that the pedigree is correct. AI sires, Herdsires and ET Donors require a GGP 50K test. The uLD panel is best suited for cattle that are well connected to the Simmental population and are not entering seedstock herds.

If you are only interested in parentage on a calf a Basic SNP or Parentage Plus panel can be ordered. While this will sort out parentage it does not provide any further information to the genetic evaluation about the animal being tested.

In most cases the additional investment in the GGP uLD 30K or GGP 50K panel is warranted. These panels provide all of the parentage information and contribute to the EPD evaluation. The GGP 50K tests when paired with specific trait tests are also a cost effective way to obtain specific trait information and enhance the EPD of the animals and are cheaper in combination than performing a standalone trait test and then requiring a 50K or parentage at a later date.

Genetic Evaluation - Impact of GGP 50K on genetic evaluation

While it is essential to continue to collect and record trait information, the following table shows the equivalent number of progeny required to boost the EPD accuracy the same amount that a GGP 50K test does.

The CSA Breed Improvement activities are directed by the membership. The Breed Improvement Committee will meet in March as part of the CSA Board meetings to review various breed improvement initiatives and provide recommendations to the board regarding breed improvement programs and activities. If you have concerns or ideas for breed improvement, please do not hesitate to contact your committee members.