USDA’s National Animal Health Monitoring System conducts national studies on the health and management of America’s domestic livestock populations. The upcoming Swine 2006 study will be NAHMS’ fourth national study of the U.S. pork industry.

The first study, conducted in 1990, focused on health and health management of farrowing sows and preweaned piglets; the 1995 study provided an in-depth look at more than 90 percent of the U.S. swine herd, focusing on the grow/finish phase of production; and the third study in 2000 provided data on nearly 94 percent of the U.S. swine herd on operations with 100 or more pigs.

Swine 2006 Study
Seventeen states will participate in the Swine 2006 study. These states account for 94 percent of both pork operations with 100 or more pigs and inventory on those operations.

The objectives of Swine 2006 include:

  • Describe pork management practices used during the gestation, farrowing, nursery and grow/finish phases of production,
  • Determine the prevalence and risk factors for a variety of pathogens found in nursery and grow/finish pigs,
  • Examine vaccination and antimicrobial – use practices,
  • Determine the prevalence of nonambulatory swine and the risk factors responsible for nonambulatory swine,
  • Identify production practices that reduce manure nutrient content, and
  • Provide an overview of changes in U.S. swine management and health from 1990 through 2006.

The goal of Swine 2006 is to help:

  • Define and evaluate current management practices and trends in the U.S. pork industry,
  • Help legislators and industry personnel make informed decisions,
  • Assist university researchers and private enterprise to identify and focus on vital issues related to swine health and production, and
  • Conduct economic analyses of the health and production of the U.S. pork industry.

Participation in all NAHMS studies is voluntary. Representatives from the National Agricultural Statistics Service will visit selected producers that choose to participate in the Swine 2006 study between July 1, 2006, and Aug. 15, 2006. NASS will administer an on-site questionnaire during this visit.

Veterinary medical officers will visit participating producers twice to administer questionnaires and take biological/environmental samples. VMOs will make their first visit between Sept. 5, 2006, and Nov. 17, 2006, and their second visit between Dec. 4, 2006, and Feb. 28, 2007.

Testing Options
NAHMS will return individual results to participants, although results may not be available until the study is completed.

  • Porcine Reproductive and Respiratory Syndrome: estimate the prevalence of PRRS in the national swine herd, and collect blood from up to 15 sows/gilts and 30 finishers from each operation.
  • Swine Influenza: estimate the prevalence of swine flu (new and traditional strains). NAHMS can test blood samples for flu from animals not vaccinated for SIV.
  • Salmonella/Food Safety Pathogens: estimate the prevalence of Salmonella and Campylobacter in the national swine herd. Collect 50 fecal samples from late finishers and 10 fecal samples from cull sows on select operations. (Only Salmonella results will be returned).

Because NAHMS’ studies rely on voluntary participation, only the data collector knows the identity of the respondent. It will not record names or addresses in any database. Nor will NAHMS report data on any individual or in a manner that would allow the identification of an individual.

For more information, contact: USDA:APHIS:VS:CEAH, NRRC Building B, M.S. 2E7,

2150 Centre Avenue, Fort Collins, CO80526-8117
; Phone 970.494.7000; E-mail: or visit NAHMS on the Web at 

USDA/ APHIS, March 2006