I agree with the others. I doubt it makes much of a difference in the long run. It gives you an experience to talk about in interviews or in a personal statement. Study abroads are fun and, hopefully, educational. They can also be expensive and, depending on the length of study, it could be difficult finding scholarships or grants to offset the cost. I say don't waste the time and money if you're not actually interested in the content of the program.
I've had mixed experiences with study abroads. I've had some go perfectly without any problems or deviations from the itinerary. I've been on one that, mid-trip, lots of things got cancelled that had originally appealed to me before I applied (it was an agro-ecology based SA and once we got to Chile, most of the animal activities that had been scheduled were cut from the plan, the dairy farm trip, penguin viewing on an island, etc.). My independent study abroad in Kenya went almost perfectly, except for a car accident injury forcing me to get emergency orthopedic surgery. I've also had interest in many study abroads (Mexico, Tanzania, Uganda, and Egypt) that were cancelled for various reasons, like insufficient number of applicants or political instability in the country. Overall, despite some difficulties, I've really enjoyed studying abroad and I would love to go on more trips in the future, regardless of my pursuit of vet school.