I saw an experiment one snake breeder did and he fed multiple rodents vs one large one and compared growth rate of hatchling corn snakes. For some reason the snake that ate one large rodent grew twice as fast and was literally twice as big at the end of the experiment even though he ate the same weight of rodents. I found that fascinating. Both snakes were totally healthy though. I do notice when I give larger rodents to a snake it grows like a rocket!