Yes, having just read the website it seems that if you are applying this year it is a 'must' to have 35 hours large animal. I wouldn't apply if you don't meet that, there is 10 applicants to a spot and the vast majority will meet the minimum requirements like this, I've heard of applicants being rejected for being only a couple hours off the minimum as they really can afford to be as fussy as they want. I don't know why they left in the requirements for last year, I do also find it odd, but I would disregard it as it obviously no longer applies to this cycle. I know it's cutting it short, but with a lot of determination you could probably just manage to do 35 hours by 15th October, I'd call up riding schools, livery yards and petting farms if they'd be willing to take you on weekends and/or evenings if possible for the weeks approaching. That is obviously a long shot but an option to explore if you are desperate to apply to Aberystwyth, but if not I would just find another university you can apply to instead that you do meet the minimum criteria for.