I located this article online a few years ago, it is crammed full of data ( hopefully some that you can use) on nutritional staus of feeder animals. spend some time going over the charts if you're interested- lots of good stuff here.

or if you have an an acute onset of insomnia, this may also be helpful in other ways.

http://www.nal.usda.gov/awic/zoo/WholePreyFinal02May29.pdf

may feeding day be a dream come true for you and your animals.

daveb