There's a turmeric users forum on Facebook founded by a vet who has done a load of research on turmeric and its benefits.
Yes it does help with inflammation. It is made more effective by the addition of black pepper, and should also be given with an oil because it is insoluble in water. But I believe with ruminants the addition of oil is unnecessary because of the presence of fatty acids in the rumen.
Look it up on Facebook - the benefits of turmeric go way beyond its use as an anti inflammatory.