Key result
Foot and Mouth Disease in dairy cows presents with salivation and lameness in ~77% of cases.
Why the study?
Following the April 2022 re-emergence of foot and mouth disease in Indonesia, this study investigated the clinical signs of laboratory-confirmed FMD-positive dairy cows.
Observational (n=284)
No
Lameness and excessive salivation are the most common clinical signs of FMD in dairy cows in the studied Indonesian outbreak.
Lameness and salivation warrant priority in FMD case detection; leaves open need for prospective studies in lactating dairy herds.
Foot and Mouth Disease (FMD) is a highly contagious viral disease that affects cattle, sheep, goats, buffalo, pigs, and other animals with cloven hooves. It is a transboundary animal disease that seriously affects livestock productivity and disrupts trade in live animals and animal products worldwide. Indonesia was declared free of FMD in 1986, then vaccination and FMD vaccine production were banned. In April 2022, FMD was detected in cattle in some provinces in Indonesia, including West Java. This study investigated the clinical signs of FMD-positive dairy cows from 20 to 30 May 2022, in Sukamurni village. A total of 284 dairy cows were confirmed FMD by the laboratory and investigated for their clinical signs by direct examination and questionnaire. The result revealed lactating cows account for 42.6% of total positive cases, followed by pregnant cows (24.3%) and calves (11.27%). The main clinical signs were lameness (including lesions on foot) and excessive salivation (77.27%). Milk production was decreased on day 3 and returned to normal on day 10 after infection. Most cows reported clinical signs up to 3-4 weeks. In conclusion, these results suggest that lameness and excessive salivation are the most common clinical signs of FMD in dairy cows.
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Ismail et al. (2023) conducted an observational in Foot and Mouth Disease (n=284). In dairy cows infected with Foot and Mouth Disease, the most common clinical signs were excessive salivation (77.27%) and lameness (77.27%), with lactating cows accounting for 42.6% of cases.