Out of curiosity, I was reading a few caresheets for Barn Owls when I read the following:

"Food items that have been frozen for more than 3 months, as the:cens0r:levels of vitamin E become depleted."
(http://www.barnowltrust.org.uk/picki...ing-barn-owls/)

If this is the case, does that mean my F/T rats and mice should not be used if they have been frozen for more than three months? Do BPs need vitamin E to the same degree as a barn owl, for example?