Thermogenesis in normal rabbits and rats: no role for brown adipose tissue?

Abstract
The occurrence of dietary and cold-induced thermogenesis in young rabbits was unaffected by noradrenaline [norepinephrine] or propranolol. Brown adipose tissue, although detectable histologically, was non-functional. Noradrenaline treatment caused an increase in O2 consumption albino, but not in hooded rats, suggesting that the former breed may possess brown adipose tissue capable of thermogenesis.