Giving your cows aspirin for pain relief? some new research from Kansas State University shows that it because it has a half-life of 30 minutes, it must be dosed at least twice a day, if not more frequently. Another fact was that oral aspirin showed a very poor bioavailability to the cow - only 30% was available to be absorbed.
As an example, pain-relief/analgesia for dehorning. All calves should be nerve blocked(lidocaine injected around the cornual nerve)which is a simple method of lowering the stress and pain of hot-iron dehorning. Lidocaine is not long-lasting though and consideration should be given for a longer lasting analgesia - prescribed use of a non-steroidal anti-inflammatory such as flunixin(given IV)can provide a continued relief to the calf at this time, lowering stress and helping them recover more quickly. Aspirin in these situations is likely not the most appropriate medication to give an animal to provide more long-lasting pain relief. And if you're not using a cornual nerve block for dehorning your calves - you should! Just ask, and at the next farm visit, it can be demonstrated and put into use for your animals.
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