Sheep 2001. Part 2: Reference of Sheep Health in the United States, 2001.

摘要

Specific objectives for the NAHMS Sheep 2001 study: 1. Estimate the regional and national prevalence of specific diseases and conditions of sheep, such as Johnes, intestinal parasites, abortions, and ovine progressive pneumonia. 2. Conduct genomic testing for genetic factors that may be related to susceptibility to clinical signs of scrapie. Describe the prevalence of potential risk factors believed to be associated with scrapie. 3. Describe health management practices used by U.S. sheep producers affecting morbidity (e.g., footrot) and mortality. These practices include animal movement and identification, feeding practices, biosecurity procedures, use of veterinary services, source of health information, vaccination, and treatment practices. 4. Describe nutritional practices and micronutrient intake levels that may impact sheep health by region.