Figure 1. Summary of the treatment procedures used in this study.

The measurement of endogenous glucose production (EGP) was performed by administering [6-³H]glucose as a tracer and periodically drawing blood samples over 180 minutes. Animals in the “field sedated” study group were all measured at the rookery. Weanlings and yearlings in the “handling manipulation” group were each measured twice over two consecutive days. Weanlings were studied at the rookery while yearlings were transported to an animal holding facility for study.