Lying behavior as an indicator of lameness in dairy cows

Journal of Dairy Science
K ItoD M Weary

Abstract

Lameness is widely recognized as one of the most serious welfare and production concerns in the dairy industry. Our objectives were to evaluate the associations between lying behavior and lameness, and to determine whether lying behavior can be used as a diagnostic tool for lameness. Electronic data loggers recorded lying behavior of 1,319 cows from 28 farms at 1-min intervals for 5 d. These cows were gait scored according to a 5-point Numerical Rating System (NRS), and categorized as NRS <or=2, NRS=3, or NRS=4; no cow was scored as NRS=5. Lameness was dichotomized twice: LAME (NRS >or=3) and SEVLAME (NRS=4). Data were divided into 2 groups: 11 farms using deep-bedded stalls (DB) and 17 farms using mattress stalls (MAT). Differences in the daily lying time (h/d), frequency of lying bouts (n/d), duration of lying bouts (min/bout), and the standard deviation of bout duration (min/bout) between LAME or SEVLAME cows and those that were not were tested using mixed models. Receiver operating characteristic curves were constructed to identify behavioral thresholds to distinguish SEVLAME cows from the rest. Odds ratios for SEVLAME were estimated using logistic regression. Overall, 28.5% of cows were LAME including 7.3% that were SEVLAM...Continue Reading

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Citations

Oct 21, 2015·Animals : an Open Access Journal From MDPI·Annelies Van NuffelWouter Saeys
Aug 9, 2012·The Veterinary Journal·Peter T ThomsenJan Tind Sørensen
May 6, 2014·Journal of Dairy Science·M NorringM Pastell
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Jul 6, 2014·Journal of Dairy Science·Andrés Schlageter-TelloKees Lokhorst
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Jun 29, 2015·Journal of Dairy Science·G ZobelM A G von Keyserlingk

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