Chapter+25

Page 257. 1. Control group showed initial slight decrease at 2 weeks but rose approximately 4% overall. In contrast, exercise group body mass remained stable until final two weeks and ended approximately 2% lower than initial body mass. 2. Based on data shown, groups without exercise (both 1 and 2) had higher pectoralis mass than exercise group. Therefore, claim is supported. 3. Determining percentage weight of pectoralis muscle as proportion to total body mass (from cadaver sample) could be used to determine live muscle mass. 4. Specifically restricting movement of poultry for testing purposes raises ethical concerns in terms of subject pain and suffering, as well as general health and physical ailments of test subjects. Concerns may also involve ultimate state of subjects once testing is complete.