I hate it when people and places say 'failed' with a species and just give up on them. Sure, some of the hoofstock at Highlands are doing badly at the moment, but rather than saying 'we've failed with this species,' they should be saying 'right, so that doesn't work. Should we stop keeping them? NO! Let's look at what we're doing, try and pinpoint what we're doing wrong, and if possible try and fix the situation in the hope of better success then.'
For example, if it is a parasite from damp ground, why not try building a hardstanding area and seeing if that works? If it is climate, source new stock from somewhere with similar conditions. I think the moment a zoo says that they have failed with a species, it's just because they've given up. I think, maybe, it can be said if money can't be found, or the source of the problem can't be found. Trial and error does cost, but I think they should look into their husbandary and think what it could be, narrow it down a bit and hopefully find an answer. Then, they may have success in the future if they can learn from any possible mistakes in husbandary now?
I don't know, my two cents anyway
For example, if it is a parasite from damp ground, why not try building a hardstanding area and seeing if that works? If it is climate, source new stock from somewhere with similar conditions. I think the moment a zoo says that they have failed with a species, it's just because they've given up. I think, maybe, it can be said if money can't be found, or the source of the problem can't be found. Trial and error does cost, but I think they should look into their husbandary and think what it could be, narrow it down a bit and hopefully find an answer. Then, they may have success in the future if they can learn from any possible mistakes in husbandary now?
I don't know, my two cents anyway