RESUMEN
As a proactive measure toward controlling the nontreatable and contagious Johne's disease in cattle, the Ontario dairy industry launched the voluntary Ontario Johne's Education and Management Assistance Program in 2010. The objective of this study was to describe the results of the first 4 yr of the program and to investigate the variability in Risk Assessment and Management Plan (RAMP) scores associated with the county, veterinary clinic, and veterinarian. Of 4,158 Ontario dairy farms, 2,153 (51.8%) participated in the program between January 2010 and August 2013. For this study, RAMP scores and whole-herd milk or serum ELISA results were available from 2,103 farms. Herd-level ELISA-positive prevalence (herds with one or more test-positive cows were considered positive) was 27.2%. Linear mixed model analysis revealed that the greatest RAMP score variability was at the veterinarian level (24.2%), with relatively little variability at the county and veterinary clinic levels. Consequently, the annual RAMP should be done by the same veterinarian to avoid misleading or discouraging results.
Asunto(s)
Enfermedades de los Bovinos/prevención & control , Industria Lechera/educación , Industria Lechera/métodos , Paratuberculosis/prevención & control , Medición de Riesgo , Agricultura , Animales , Anticuerpos Antibacterianos/análisis , Anticuerpos Antibacterianos/sangre , Bovinos , Enfermedades de los Bovinos/epidemiología , Conducta Cooperativa , Ensayo de Inmunoadsorción Enzimática/veterinaria , Femenino , Leche/microbiología , Mycobacterium avium subsp. paratuberculosis/inmunología , Ontario/epidemiología , Paratuberculosis/epidemiología , Paratuberculosis/microbiologíaRESUMEN
Monitoring the passive transfer of immunoglobulins from colostrums particularly in noncentrifuged samples can be useful for calf health management programs. The results of total solids refractometry from centrifuge and noncentrifuge harvested sources of serum were highly correlated (R2 = 0.95). Results from a digital and a hand-held refractometer were highly correlated (R2 = 0.96).