Rehabilitation of stray/abandoned cattle may have various aspects like fodder availability, disease control and compatibility of the livestock being housed together. Any study regarding these and other allied aspects.
This may not be a very helpful answer. My apologies if this answer helps little. I cannot think of any apart form the good management of the Chillingham cattle.
Otherwise the “story” is a little depressing. E.g the Amsterdam cattle were just wiped out, they seem to be hunting them in Hawaii.
Perhaps in Australia one could argue that in certain cases feral cattle are managed
One quite good way to follow this up is to check out references to “feral cattle”
I have out down a link for you.
One practical thing to bear in mind is that worldwide if farmer does get a wild stray cow which no one comes to claim: and if it is useful to him:- He may not broadcast the fact but just keep the animal on the basis of “finders keepers”. This is a statistic which will be hard to find.
In Colombia we have a law that request the construction of municipal pens to house cattle and other farm animals that are in the city. Actually this is just a law but the real situation is the municipal pens do not exist in many cities. Abandoned cows are given to farmers or to abattoirs.