Descriptive evaluation of a camera-based dairy cattle lameness detection technology

Area of Science:

• Animal Science
• Veterinary Medicine
• Agricultural Technology

Background:

• Lameness in dairy cattle, primarily due to painful foot lesions, significantly impacts the economic, environmental, and social sustainability of the US dairy industry.
• Early and precise detection of lameness is crucial for effective management and mitigation strategies.

Purpose of the Study:

• To describe the association between average weekly autonomous camera-based (AUTO) locomotion scores and hoof trimming (HT) data in dairy cattle.
• To evaluate the potential of camera-based technology for early lameness detection.

Main Methods:

• An observational study was conducted on 3 dairy farms over one year, collecting AUTO locomotion data and historical hoof trimming records.
• Hoof trimming events were categorized into regular trims (TRIM) and trims with recorded lesions (LESION), with lesion types and affected legs documented.
• AUTO scores from the 4 weeks prior to hoof trimming events were analyzed and compared between TRIM and LESION groups, considering lesion history.

Main Results:

• Cows with recorded lesions (LESION) consistently exhibited higher median AUTO locomotion scores than those without lesions (TRIM).
• Cows with no prior lesions (TRIM0) had the lowest and most stable median weekly scores.
• The magnitude of AUTO score increase in the 4 weeks preceding hoof trimming was significantly higher (4-8 points) for LESION cows compared to TRIM cows (1 point), with scores increasing after subsequent lesion events.

Conclusions:

• Autonomous camera-based locomotion scoring demonstrates potential as a precise and less labor-intensive tool for early detection of hoof lesions in dairy cattle.
• The observed differences in locomotion scores between cows with and without lesions, and across lesion histories, highlight the technology's utility for proactive lameness management.