First weaners coming next week and are supposed to be at that time 8 weeks and 40lbs. I'm building a pen from some existing cattle panels. Question: can the typical 40lb piglet fit through the 6"x8" opening in a cattle panel? I'll have a hotwire at 6 or 8" but fear I should maybe string chicken wire or something along the bottom until they gain some size. I'm just not sure how large a 40lb piglet is. Opinions?