Figure 10.  Sleeping time and liver enzyme activity changes with softwood and hardwood bedding.  Mice were raised without use of bedding, moved to softwood (red cedar) for days 1-3 (trinagular points), and moved to hardwood (beech, birch, and maple mixture) for the remainder of the period (square points).  Note that values return to normal by day 12.  Adapted from Vessel 1967.

Return to Text

Effects of Softwoods on Respiratory Physiology and Function
Effects of Softwoods on Liver Physiology and Function
Additional Harmful Chemicals in Softwoods
Alternative Beddings for Companion Animals

Please send questions or comments regarding this website to Nathaniel Cook.