Herdbook Services
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American Simmental Association

Herdbook Online Services


--handling registrations, transfers, THE, data entry, data lookup 


*2023 Fall THE Late Enrollment is now in effect!

The 2023 Fall enrollment early deadline was June 15, 2023. All enrolled dams will now incur a $1.00 late fee. Members still have until August 15, 2023 to update their inventories.

The first week of July, all fall THE herds that have not submitted an updated enrollment will be auto-enrolled in option A. Enrollments can be corrected until August 15, 2023. Don't forget, even if that happens, you can get credit back for dams that are culled, or if you switch from option A to options B or C. Don't pay for dams that are gone!

If you are not currently enrolled in THE click here to learn more about how THE can help you improve your herd's performance.

Hydrops Pregnancies in Simmentals

The Nebraska Bovine Congenital Defects program recently recognized an increased number of reports of hydrops pregnancies in a line of Simmental cows. Hydrops is expressed by females developing markedly enlarged abdomens in late pregnancy due to a dramatic excess fluid in the fetal membranes. At present, these cases point to a genetic link but the pattern of inheritance and percent of affected offspring is unknown. Reports involve daughters and granddaughters of the bull WS All Aboard B80, ASA #2852207. For the most up-to-date information, to report a case, or to watch the informational webinar, please visit https://www.simmental.org/site/index.php/hydrops-pregnancy.

* Spring 2022 compliance reporting is now in effect.

What does this mean? It means that each dam enrolled on your Spring 2022 THE inventory needs to have a calf reported, even if they are not being registered. If they did not calve, a productivity code, explaining why she did not calve, may be used.

If the reporting requirement has not been met, your account is considered to be in non-compliance and you will not be able to process any registrations/transfers until the data has been turned in.

Please click on this link for instructions.

* 2022 Year-Letter is ?K?, 2023 is "L"

In accordance with the Beef Improvement Federation (BIF) guidelines, the year-letter animal identifications are:

  • 2021 - J

  • 2022 - K

  • 2023 - L

  • 2024 - M

  • 2025 - N


Per the BIF guidelines, the following letters are not used: ?I?, ?O?, ?Q?, & "V".

* Registering an animal of another Breed - Foundation Registration

If you are registering an animal out of a sire of another breed, this sire must be registered in another breed association and then registered with ASA as a foundation animal.

If you are registering an animal out of a cow of another breed that is registered in another breed association, the animal will have a more complete pedigree and EPDs if the cow is registered with ASA as a foundation animal.

There is information on registering foundation animals here.

* Avoid processing delays! Required tests for sires and donor - 

All bulls with semen collected and donor cows must have a high density DNA SNP analysis. In addition all sires and donor cows with a carrier in their lineage (CL, DL) or who come from a risk population (PR) for specified genetic defects must be tested for that defect before registration certificates and EPDs are available on new progeny. Please plan ahead; tests can take from 4 to 8 weeks. No testing is required on dams of natural calves. More..


--------------------Instructions for Herdbook Services -------------------------


  1. Log in by choosing that option from options tab in the top bar. Have your member/account number and password available. If you are not a member of the Association, you can create an account from the Log In page to have access to more search features.

  2. Registrations, transfers, calf records and THE enrollments can be done under `Data Entry` after log in.

  3. Choose Online from `Data Entry` to enter data through the web site. You can preload animals or start with an empty spreadsheet of rows and columns. Each row represents 1 animal and the columns represent specific data on the animal. When you select (click on) a column heading, information about the column is displayed. The tabs immediately above the spreadsheet are used to change the column headings for entering (or viewing) additional data.

  4. Choose Download from `Data Entry` to get a form to enter this information off line using Excel to upload at a later time. Choose Upload when the Excel file is complete and data is ready to send to ASA.

  5. To display EPD and pedigree information choose `Animal Search` under `Data Search`. Choose `EPD Search` to search the database for animals meeting specified EPD and other criteria.

  6. `Reports` under `Herd Mgmt` provides calf crop summaries and more. You can also create you own groups and reports.

  7. Please call (406-587-4531) or email simmental@simmgene.com if you have questions or comments.

American Simmental Association
One Genetics Way
Bozeman, Montana 59718 U.S.A.

Phone: 406-587-4531
Fax: 406-587-9301
Email: simmental@simmgene.com


  1. ASA Home

  2. Registrations/Animal Data

  3. Foundation (other Breed) Reg

  4. Simmental Percentage Chart

  5. Standard Codes

  6. THE Codes

  7. Fees/Billing Worksheet

  8. ASA Deadline-Time Table

  9. Monitoring Genetic Defects

  10. Percentile Tables

  11. DNA Accuracy Calculator

  12. Forms