The GSG-Cows and GSG-Heifers are updated three times a year, immediately following each USDA sire run. Since the GSG-Progeny is based on breeding records and pregnancy confirmations reported on test day, this report will be available as part of the regular test day reports.
Members can receive the GSG as a paper report or by accessing the information via MyAgSource. Online reports allow users to sort and filter data and are updated after monthly test dates.
The Genetic Selection Guide is powerful because it contains both genotypic and phenotypic information on individual animals in a herd. All three reports divide animals into quartiles based on their Net Merit$ (NM$). NM$ is the most widely accepted measure of a cow or heifer's genotypic ability to produce milk over a lifetime. For more individual report information, follow the links in the left menu.
The Fine Print
To receive the full value of these reports, you must submit certain herd details to AgSource. This includes:
- Accurate sire and dam identification
- All breeding dates and service sires
- Pregnancy confirmations
- Unique permanent identification number for each heifer calf right after birth
Accurate herd inventory information is also dependent on accurate breeding records and pregnancy confirmations for both heifers and cows. Reporting this information adds no cost, but results in accurate pregnancy rates to evaluate a herd's reproductive performance along with service rate, conception rate and pregnancy loss data to troubleshoot if problems exist. > See how the Genetic Selection Guide makes you money
Knowing your herd's projected milking cow inventory over the next six months is key to accurately determining if you have surplus cattle to sell. The "Projected Herd Inventory - Next 6 Months" section of the AgSource Herd Summary answers the surplus question and is a good complementary report to the GSG.
> Understand the Genetic Selection Guide (PDF)