yes, drop food will work. i have 9 pigs, 4 feeders. they run out of food in about 2 "real days". that being said. i would be happy to visit your place and care for your livestock. i might even leave u something for the holidays :) send me a key and i'll make it happen, or im me in the game and we can chat :
Thanks for the offer tiptronic but I think I can handle it.
Going by what you guys have said I think putting 6 or so feeders should be fine enough. And even if it isn't I don't think they will starve enough to die before I get back.
Have you thought about trying a potion of animal youth? If it works, your pigs will become piglets and you won't neew to worry about feeding them. Once you get back you can feed them back to their piggy selves. Safer than sharing a key.