ABSTRACT
Abruptly weaned crossbred steer calves (N = 271) were used in a randomized, blinded 2-arm clinical trial to assess the impact of a long-acting non-steroidal anti-inflammatory drug on bovine herpesvirus type 1, bovine respiratory syncytial virus, parainfluenza virus type 3, and coronavirus titers and health outcomes when administered concurrently with a modified live respiratory vaccine upon arrival at a feedlot. Treatment groups included a control (saline, n = 135) and an experimental group (injectable meloxicam, n = 136). Viral antibody titers and body weight were measured on arrival, day 7, and day 21, along with a final weight on day 45. Body weight and antibody titers for all viruses increased over time (P < 0.001), however, there were no differences by treatment group or a significant group × time interaction when evaluated using repeated measures analysis of variance. Interestingly, the use of meloxicam was associated with increased treatment risk (P < 0.05). In conclusion, the administration of meloxicam may adversely affect health, however, a decreased vaccine response is likely not a contributing factor.
ABSTRACT
Exotic pest and disease investigations are managed and reported by the Ministry for Primary Industries' (MPI's) Diagnostic and Surveillance Directorate. This article presents a summary of investigations of suspect exotic and emerging pests and diseases in New Zealand during the period from July to September 2021.