关键词: 复合酶制剂, 蓝狐, 蛋白质, 消化代谢

Abstract: Different doses of compound enzyme preparations were added into diets of Alopex lagopus in different growing phases.Based on feeding and digestion metabolism experiments , their effects on digestion , metabolismof protein were investigated from the point view of nutriology. Results showed : compound enzyme could improve digestibility and metabolic rates of protein effectively. In growing phase , contrasted with control group , digestibility and metabolic rates of crude protein increased 13.05 % ( P < 0.01) and 13.28 % ( P < 0.05) respectively in group IIIwhich were the highest among six groups. In winter fur phase , maximal digestibility and metabolic rates of crude protein occuried in group II which increased 10.43 % ( P < 0.05) and 10.09 % ( P < 0.05) respectively compared with control group. Effects of compound enzymes on digestion and metabolism were positively correlated with their doses. Feasible doses of compound enzyme preparations could improve digestibility and metabolic rates of crude protein , so should be recommended for breeding Alopex lagopus. Analysis from the point viewof economical benefit , the feasible doses of compound enzymes additive was 0.6 % in growing phase and 0.4 % in winter fur phase.

Key words: Compound enzymes, Alopex lagopus, Protein, Digestion metabolism