The energy assimilation efficiency of emperor penguins, Aptenodytes forsteri, fed a diet of Antarctic krill, Euphausia superba.
Captive emperor penguins in Antarctica hand-fed Antarctic krill assimilated an average of 70.5% +/- 1.7% (n = 3) of the energy in the diet. Water intake estimated by tritiated water turnover was 9.4% +/- 2.4% less than that measured gravimetrically. Tritium took 1.5 h from injection to equilibrate with the penguins' body water pools.
Kirkwood
R
R
Australian Antarctic Division, Kingston, Tasmania, Australia.
Robertson
G
G
D000818:Animals; D000864:Antarctic Regions; D001717:Birds / Q000378:metabolism* / Q000502:physiology; D001834:Body Water; D003445:Crustacea / Q000378:metabolism*; D004032:Diet / Q000592:standards / Q000662:veterinary*; D004326:Drinking / Q000502:physiology; D004435:Eating / Q000502:physiology; D002149:Energy Intake / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology*; D014316:Tritium; D014867:Water / Q000378:metabolism
D014867:Water; D014316:Tritium