A dehydrator is best (Craigslist?? Thrift Stores??) However, an oven will work, it's just more of a pain. I like setting my dehydrator to 175-180 degrees F. Hotter than that, you are cooking more than drying, so set your oven as close to that as you can. You'd need to have a bunch of racks (like cooling racks--grid style are better than just rows--when the meat dries, it becomes smaller and will fall through the gaps in the rows--does that make sense?) and line your oven shelves with the cooling racks once you've filled them. If you have a convection oven--all the better, the fan will help the air circulate. You will have to monitor them every few hours until they become dry but not brittle. Looked up the type of rack you'd need: http://www.amazon.com/Bellemain-Cooling-Quality-Chrome-Plate/dp/B00OY91N90/ref=sr_1_4?s=kitchen&ie=UTF8&qid=1444785198&sr=1-4&keywords=cooling+rack FYI, don't put those black powder coated ones (like Wilton) in the oven--the black crap flakes off. Metal only. I know because I used the coated ones to bake something on a few years ago. :( Message me if you have any more questions.
My cat did the same thing. I zip-tied sturdy baking racks to the plastic frame.
Bellemain Cooling Rack - Baking Rack , Chef Quality 12 inch x 17 inch - Tight-Grid Design, Oven Safe, Fits Half Sheet Cookie Pan https://www.amazon.com/dp/B00OY91N90/ref=cm_sw_r_cp_api_.wN3AbEB6SHDG
https://www.amazon.com/gp/product/B00OY91N90/
I have 2 of these. Fit perfectly on half sheet pans.