Case report
Management of paratuberculosis in a dairy goat herd
DOI:
https://doi.org/10.21423/bovine-vol38no2p142-146Keywords:
diagnosis, diagnostic techniques, disease control, disease prevalence, ELISA, epidemiology, immunodiffusion tests, paratuberculosis, serological surveys, seroprevalenceAbstract
A total of 234 adult, mixed-breed dairy goats in the USA were screened for paratuberculosis antibodies using ELISA and agar gel immunodiffusion (AGID) methods licensed for bovine use in January 2000. All does which had one or more parturitions were included in the serological screening tests conducted at 6-month intervals over a 2-year period. Test-positive animals were removed from the herd and, at the owners' discretion, were either euthanized and examined by necropsy, histopathology and culture, or sold for meat purposes. Management practices for control of paratuberculosis transmission were also implemented. There was good agreement between ELISA and AGID test results (Kappa=0.625). Of 41 seropositive goats submitted for necropsy, 39 (95%) were paratuberculosis-positive. Over a 2-year period, herd seroprevalence declined from 9.83 to 3.59% among adult does. Testing for Mycobacterium avium subspecies paratuberculosis and adopting management practices recommended for control of paratuberculosis in cattle appeared to reduce the seroprevalence of paratuberculosis in this goat herd.