关键词: 梅花鹿, 生茸期, 能量代谢

Abstract: The energy metabolism of male sika deer at antler growing period was studied by indirect respiration calorimetric experiments and digestible metabolic trials under the different energy in take levels and the different protein in take levels . The main results were obtained as follows:
( 1) The heat p roduction (HP) and body energy retention were all increased with the increasing of gross energy intake (GE I). Energy reserves (ER ) might be deposited with efficiencies of 0.59 (Kgp ) and 0.61 (Kgf) for protein and fat, respectively. The regression equation between HP and GEI was obtained as follows:
HP (kJ/W ^0.75.d) = 265.12+ 0.332GE I (kJ/W ^0.75.d)
(2) The ratio of HP/GEI were lower for the 29% protein level groups during theearlier stage and later stage of antler growth (P < 0.05). There were no significant difference between different stage in HPGEI ratio when the dietfed were same protein level (P > 0.05). Both antler growth stage and dietary protein level had no significant effect on the body ER -GE I ratio ( P > 0.05 ) , The body protein energy retention (EPR ) -ER ratio of the 29% protein groups were higher than those of the 22% protein groups both the earlier stage and later stage of antler growth (P< 0.05) , but the body fat energy retention (EFR ) -ER ratio returned the other way around.

Key words: Sika deer (Cervus nippon), Antler-growing period, Energy metabolism