Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial

A positively controlled, randomised controlled trial (RCT) was undertaken to test recovery of cows with claw horn lesions resulting in lameness of greater than two weeks duration. Cows on seven commercial farms were mobility scored fortnightly and selected by lameness severity and chronicity. Study...

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Main Authors: Thomas, H.J., Remnant, J.G., Bollard, N.J., Burrows, A., Whay, H.R., Bell, N.J., Mason, C., Huxley, J.N.
Format: Article
Published: BMJ Publishing Group 2016
Online Access:https://eprints.nottingham.ac.uk/35328/
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author Thomas, H.J.
Remnant, J.G.
Bollard, N.J.
Burrows, A.
Whay, H.R.
Bell, N.J.
Mason, C.
Huxley, J.N.
author_facet Thomas, H.J.
Remnant, J.G.
Bollard, N.J.
Burrows, A.
Whay, H.R.
Bell, N.J.
Mason, C.
Huxley, J.N.
author_sort Thomas, H.J.
building Nottingham Research Data Repository
collection Online Access
description A positively controlled, randomised controlled trial (RCT) was undertaken to test recovery of cows with claw horn lesions resulting in lameness of greater than two weeks duration. Cows on seven commercial farms were mobility scored fortnightly and selected by lameness severity and chronicity. Study cows all received a therapeutic trim then random allocation of: no further treatment (trim only (TRM)), plastic shoe (TS) or plastic shoe and NSAID (TSN). Recovery was assessed by mobility score at 42 (±4) days post treatment by an observer blind to treatment group. Multivariable analysis showed no significant effect of treatment with an almost identical, low response rate to treatment across all groups (Percentage non-lame at outcome: TRM – 15 per cent, TS – 15 per cent, TSN – 16 per cent). When compared with results of a similar RCT on acutely lame cows, where response rates to treatment were substantially higher, it can be concluded that any delay in treatment is likely to reduce the rate of recovery, suggesting early identification and treatment is key. Thirty-eight per cent of animals treated in this study were lame on the contralateral limb at outcome suggesting that both hindlimbs should be examined and a preventive or if necessary a therapeutic foot trim performed when lameness is identified particularly if the duration of lameness is unknown.
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spelling nottingham-353282020-05-04T17:30:22Z https://eprints.nottingham.ac.uk/35328/ Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial Thomas, H.J. Remnant, J.G. Bollard, N.J. Burrows, A. Whay, H.R. Bell, N.J. Mason, C. Huxley, J.N. A positively controlled, randomised controlled trial (RCT) was undertaken to test recovery of cows with claw horn lesions resulting in lameness of greater than two weeks duration. Cows on seven commercial farms were mobility scored fortnightly and selected by lameness severity and chronicity. Study cows all received a therapeutic trim then random allocation of: no further treatment (trim only (TRM)), plastic shoe (TS) or plastic shoe and NSAID (TSN). Recovery was assessed by mobility score at 42 (±4) days post treatment by an observer blind to treatment group. Multivariable analysis showed no significant effect of treatment with an almost identical, low response rate to treatment across all groups (Percentage non-lame at outcome: TRM – 15 per cent, TS – 15 per cent, TSN – 16 per cent). When compared with results of a similar RCT on acutely lame cows, where response rates to treatment were substantially higher, it can be concluded that any delay in treatment is likely to reduce the rate of recovery, suggesting early identification and treatment is key. Thirty-eight per cent of animals treated in this study were lame on the contralateral limb at outcome suggesting that both hindlimbs should be examined and a preventive or if necessary a therapeutic foot trim performed when lameness is identified particularly if the duration of lameness is unknown. BMJ Publishing Group 2016-01-25 Article PeerReviewed Thomas, H.J., Remnant, J.G., Bollard, N.J., Burrows, A., Whay, H.R., Bell, N.J., Mason, C. and Huxley, J.N. (2016) Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial. Veterinary Record, 178 (5). 116/1-116/6. ISSN 2042-7670 http://veterinaryrecord.bmj.com/content/178/5/116 doi:10.1136/vr.103394 doi:10.1136/vr.103394
spellingShingle Thomas, H.J.
Remnant, J.G.
Bollard, N.J.
Burrows, A.
Whay, H.R.
Bell, N.J.
Mason, C.
Huxley, J.N.
Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title_full Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title_fullStr Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title_full_unstemmed Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title_short Recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
title_sort recovery of chronically lame dairy cows following treatment for claw horn lesions: a randomised controlled trial
url https://eprints.nottingham.ac.uk/35328/
https://eprints.nottingham.ac.uk/35328/
https://eprints.nottingham.ac.uk/35328/