Just to muddy things up, a LMB stocked in September would still have at least a month of feeding and growth left in the north, and more time in the south.
If the LMB was on feed, you'd get even more growth over those 4-10 or 12 weeks.
Excerpt from Robert Crais' "The Monkey's Raincoat:" "She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."