For the randomised controlled trial, 528 dairy heifers were monitored for 34 months to investigate the effects of routine treatment with a NSAID at calving and during treatment for lameness, on the future probability of lameness and culling.
The cows were exposed to normal farm conditions and were split into four groups:
During the study, the probability of lameness was assessed by a lameness outcome score collected every 14 days.
Data on culling was also extracted from farm records.
438 animals were included in the final analysis which revealed that treating a cohort of cows following the group three protocol led to an absolute reduction in lameness of approximately 10% and severe lameness of 3%, compared with animals treated in accordance with conventional best practice (group one).
James Wilson BSc(Hons) PhD, foot health consultant and lead researcher on the trial, said: “It appears that through giving heifers a NSAID at critical time points, we have imparted a substantial, long-lasting benefit to them.
"When freshly calved heifers enter the herd for the first time, we understand that they are (typically) naïve to lameness and have good hoof health.
"By utilising NSAIDs strategically, we believe that we have preserved the functionality of the foot, thereby reducing the risk of lameness.
"This is a highly efficacious, cost-effective means of managing lameness on farm.”
Herd Health Consultancy says that in dairy cows, it is advisable to consider using a zero milk-withhold NSAID which is fully licensed to treat lameness in cattle to avoid any need to discard milk, however no NSAID is currently licensed in the UK to treat the pain associated with calving, so careful advice should be given to farmers based on the farm type and production methods.
https://doi.org/10.3168/jds.2021-21329
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