A commitment to Breed Improvement

Closely aligned with the association's mission and vision statements; “Breed Improvement” is your clearing house for all things involving genetic evaluations, technology and NSIP. Our Association understands the Suffolk breed's role as America's premier terminal sire. Knowing that continuous genetic improvement is essential to keep that spot, “If you you are not moving forward than someone is catching up to you.”

The Association also recognizes that not everyone raising Suffolk sheep is in the business of raising terminal sires for the commercial industry. However, the improvement in performance, carcass quality, fertility, survivability, soundness, disposition and other convenience traits should be in the best interest of all Suffolk breeders. Regardless of the aspirations of any breeding program; all or some of the animals will eventually enter the commercial industry, get sold by the pound and enter the food chain. It is vitally important that those sheep do the Suffolk breed proud.

What's Happening

A New Direction in Sheep Breeding – recording posted!

Click Here to view Seedstock Breeders Program

Click Here to view Commercial Breeders Program


Download speaker PowerPoint Presentations:

Utilizing Quantitative Genetics by Dr. Dan Morrical

Breeding Terminal Sires for the Commercial Sheep Industry by Dr. Dan Morrical

Breed Improvement Progress by Dr. Ron Lewis

Highlights Leading Edge Project by Dr. Ron Lewis

Using EBV in Sire Seleiction for Commercial Flocks by Dr. Dan Morrical

Thank you to our Program Sponsors!




    Center of the Nation Sale Suffolk Consignors & Friends


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Learn more about NSIP!

Miss the NSIP Webinar?

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Breed Improvement Chair:
Brenda Reau   |    [email protected]

Randy Hodges   |    [email protected]

Suffolks: The Terminal Sire

RESEARCH: Evaluation of Columbia, USMARC-Composite, Suffolk, and Texel Rams as Terminal Sires in an Extensive Rangeland Production System
Presented at: Production, Education, and Research Council Policy Forum, Amer. Sheep Industry Convention, Scottsdale, AZ, January 24-28.

National Sheep Improvement Program

The mission of the National Sheep Improvement Program is to provide predictable, economically important genetic evaluation information to the American sheep industry by converting performance records into relevant decision-making tools.

NSIP is the only American organization to offer U.S. sheep producers a proven genetic selection system by which to improve flock productivity and quality. Using a process similar to that used by nearly all other livestock species to aid in genetic selection, NSIP develops Estimated Breeding Values (EBVs) which sheep producers can use to select animals for important traits, including productivity, quality and flock health. Please visit the NSIP website for more information!

NSIP has developed a searchable database that anyone can use in searching for sheep with Estimated Breeding Values. The Suffolk breed is well represented in this collection of important data. You do not need to be a NSIP member flock to access this data. The site was launched in 2017, and is open to the public with the goal of allowing easy access to anyone interested in searching for sheep with breeding values. The database is an ever-changing source of genetic information that is updated on a monthly basis.

  Find NSIP on Facebook
NSIP Breed Coordinator:
Brenda Reau
  [email protected]

American Sheep Industry Association/American Lamb Board

American Sheep Industry Association
ASI is the national organization representing the interests of 81,000 sheep producers located throughout the United States. With roots dating back to 1865, the American Sheep Industry Association (ASI) is a federation of 46 state associations representing sheep producers nationwide with a common goal to promote the well-being and profitability of the U.S. sheep industry. Committees include animal health, legislative action, predator management, public lands, research, education, and resource management.

Let's Grow
Let’s Grow is a committee of the American Sheep Industry Association with the following mission:

To support, promote and ensure the U.S. sheep industry's future through the development of innovative and sustainable initiatives that increase the productivity, profitability and growth of the American sheep industry, which will further enhance domestic wool and lamb production.

All questions about the Let's Grow program activities can be directed to the Program Coordinator, Alan Culham, at [email protected] or 517-896-7378.

American Lamb Board
The American Lamb Board is an industry-funded national promotion, research and information organization (national checkoff program) that represents all sectors of the American Lamb industry including producers, feeders, seed stock producers, and processors.

The program is funded through mandatory assessments collected under the federally mandated Lamb Checkoff program. The assessments are remitted to the American Lamb Board. The Board’s expenditures for administration are limited to 10 percent or less of projected revenues. All remaining revenues are expended on programs related to promotion, research and information for the lamb industry.

The American Lamb Industry Roadmap Project
The American Lamb Industry Roadmap Project / Hale Report is now available online.
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