Quote:
Metacam is an anti-inflammatory, much like Motrin or Aleve for people (do not use Motrin or Aleve in turkeys). The drug name is meloxicam, with Metacam being the brand name that is labelled for dogs. Meloxicam has been shown to be both the safest and most effective anti-inflammatory for birds. It comes in three forms, all of which are by prescription only: a liquid formulated for dogs (Metacam, which is universally hated by my birds), a generic tablet made for humans which can be prescribed by any vet, and it can be custom compounded by some private pharmacies as either a capsule or a liquid to any flavor and strength desired. The dose for birds is considerably higher than for humans and dogs, so most turkeys and large chickens can take 1/4 - 1/2 of the smaller tablet made for people. There is some research in chickens that the drug sticks around longer in that species than in other types of birds, so typically the full dose is given for several days, then the dosage and frequency are decreased to compensate for the slow drug elimination with long term use, much like meloxicam is used off label in cats. There is no research in turkeys to my knowledge, but drug doses for turkeys are typically derived from the research done in chickens. I use the same mg/kg dosages for both species, adjusting as needed to the lower end of the dosage range because larger animals typically need slightly lower mg/kg dosages than smaller animals.
Meloxicam is a great medication for limping turkeys, but there are three concerns that you should consider before using it. First, if the leg is rotating there is likely either some ligament or tendon damage in or near one of the major joints in the leg, or possibly even a dislocation, which may be less painful with anti-inflammatories, but will not be corrected by them. If the leg is truly rotating, then this is probably a permanent condition that is unlikely to heal without surgery. Second, anti-inflammatories do provide some wonderful pain control at any stage of an injury, but you get the most benefit from them when used early. That doesn't mean that they shouldn't be used in the later stages, but that the benefit will be less than if they were used initially. Third, meloxicam does not have an established drug withdrawal time for food animals, and your vet could face disciplinary action from the USDA and the State Board of Veterinary Examiners for prescribing this medication to a bird that is "one part pet and one part livestock." It is legal for him/her to prescribe it to a pet turkey, but if that turkey were to later be eaten and problems occur because of drug residues, s/he could be held accountable. So very few vets would prescribe it under those circumstances. From a practical point of view, most drug residue issues concern antibiotics and toxic substances, so medications like meloxicam are usually considered to have a 60 day withdrawal time and there are very few actual risks. But sometimes practical and legal conclusions don't come out the same, so keep that in mind.
Bottom line, given what you've posted there is a high probability that this is a serious injury that will not heal with just medication. Before you consider medication, you should really make the final decision as to whether this bird is livestock or a pet. If it is livestock, then it should be culled ASAP to prevent further discomfort. If it is a pet then it needs medical care, with the realization that meloxicam is a good place to start, but if the leg is truly starting to turn and surgery is needed, then the sooner the surgery is performed the more likely it is to be successful. Once all the muscles and tendons start to rotate in a growing bird, those rotational forces add extra stress on any surgical repair, which means that the repair is more likely to fail.
Good luck. I know this is a hard decision.