mate jungles dont get much bigger than 6-8 foot. My males i keep on the slender size 5-6kg and they gets fed once a month with about 4 adult rats, but the females get fed every fortnight with 4 adult rats, this is only because when i breed with the females they need to be in prime condition.
I usually swap feed items around as well, so sometimes rats then rabbits then chickens,this ensures they get a range of different nutrients with their food intake.
i also use wombaroo food supplements by gutting the rats and filling the void with a 50/50 wombaroo/water mix every second or third feed. i hope this helps.