Dairy 2002: Part 4. Antimicrobial Use on U.S. Dairy Operations, 2002

摘要

NAHMS is a nonregulatory division of USDA-APHIS-VS designed to help meet animal health information needs. NAHMS has collected data on dairy health and management practices through two previous national studies. The NAHMS 1991-92 National Dairy Heifer Evaluation Project (NDHEP) provided the dairy industrys first national baseline information on the health and management of dairy cattle in the United States. Just months after the studys first results were released in 1993, cases of acute bovine viral diarrhea surfaced in the United States following an outbreak in Canada. NDHEP information on producer vaccination and biosecurity practices helped officials address the risk of disease spread and target educational efforts on vaccination protocols. An outbreak of human illness related to Escherichia coli 0157:H7 was reported in 1993 in the Pacific Northwest. NDHEP data on the bacterias prevalence in dairy cattle helped officials define public risks as well as research needs. This baseline picture of the industry provided by NDHEP also helped identify additional research and educational efforts in various production areas, such as feed management and weaning age.