Invited review: Cattle lameness detection with accelerometers

O’Leary, Niall; Byrne, Daire T; O’Connor, A.H.; Shalloo, L.

doi:10.3168/jds.2019-17123

Cited by 84 publications

(56 citation statements)

References 74 publications

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“…Contributing to mixed literature, the assessed behavior measures were not reliably associated with mobility scores. Based on the present and other results [14,20,[23][24][25]34], measuring lying time appears to be of limited value for lameness detection. Activity and Standing Index were indicative of mobility scores in both aggregated datasets A and B, but only statistically significant in B.…”

Section: Main Findingsmentioning

confidence: 79%

“…To date, the variables most used to assess lameness using accelerometers have been differences in behavior [34]. Contributing to mixed literature, the assessed behavior measures were not reliably associated with mobility scores.…”

Section: Main Findingsmentioning

confidence: 99%

“…However, the highest accuracy using similar technology achieved 91% lameness detection accuracy by only assessing three days of behavior [16]. Extended observation and observation relative to herd mates may facilitate finding stronger associations [34] and should be considered in the design of future studies.…”

Section: Study Limitationsmentioning

confidence: 99%

“…Such small effect sizes are, however, unlikely to be sufficient for accurate lameness detection. Novel measures of cow gait, such as stride duration [16], may be more indicative of lameness than measures of behavior [34], especially if gait measures are less influenced by management and as measures of gait are closer proxies of lameness than behavior. After all, it is upon gait that manual mobility scoring is based [9], not measures of behavior.…”

Section: Implications Of Findingsmentioning

confidence: 99%

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Grazing Cow Behavior’s Association with Mild and Moderate Lameness

O’Leary

Byrne

Garcia³

et al. 2020

Animals

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Accelerometer-based mobility scoring has focused on cow behaviors such as lying and walking. Accuracy levels as high as 91% have been previously reported. However, there has been limited replication of results. Here, measures previously identified as indicative of mobility, such as lying bouts and walking time, were examined. On a research farm and a commercial farm, 63 grazing cows’ behavior was monitored in four trials (16, 16, 16, and 15 cows) using leg-worn accelerometers. Seventeen good mobility (score 0), 23 imperfect mobility (score 1), and 22 mildly impaired mobility (score 2) cows were monitored. Only modest associations with activity, standing, and lying events were found. Thus, behavior monitoring appears to be insufficient to discern mildly and moderately impaired mobility of grazing cows.

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Section: Main Findingsmentioning

confidence: 79%

Section: Main Findingsmentioning

confidence: 99%

Section: Study Limitationsmentioning

confidence: 99%

Section: Implications Of Findingsmentioning

confidence: 99%

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Grazing Cow Behavior’s Association with Mild and Moderate Lameness

O’Leary

Byrne

Garcia³

et al. 2020

Animals

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“…Replication of these same findings with non-grazing animals has also not been achieved to any significant extent in previous studies. It appears that behavior monitoring is insufficient or potentially even unhelpful in detecting mild and moderate lameness [31].…”

Section: Discussionmentioning

confidence: 99%

Grazing Cow Behavior and Lameness

Nw¹,

Dt²,

Werner³

et al. 2020

Preprint

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Development of accelerometer-based lameness (mobility) detection has focused on cow behaviors such as lying and walking. Several studies, usually small, have reported levels of accuracy up to 91%. However, there has been limited independent replication of these results. In this study, behavior measures previously identified as being associated with lameness such as lying bouts and walking time are examined in relation to mobility score. On a research farm and a commercial farm, four trials were completed with 65 grazing cows. The cows had differing mobility scores ranging from perfect mobility to impaired mobility. Behavior was monitored using leg worn accelerometers. In general, behavior and mobility associations identified in previous studies were not found. Behavior monitoring with accelerometers as a basis to classify impaired mobility in pasture-based contexts thus remains challenging.

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