| A two-stage experiment was conducted with Huoyan geese as models in order to determine the feasible requirements of ME and CP on broiler geese and discuss the effects of ME and CP on carcase performance and blood parameters on them. 0～4 weeks:A 5×3 factorial experiment was conducted with 360 one-day-old commercial generation Huoyan geese, which were divided into 15 treatments with 6 replications, each replication comprising 4 birds. Five metabolizable energy levels(10.87,11.37,11.87, 12.37,12.87MJ/kg) and three crude protein levels (15.0%,17.5%,20.0%) were used in growing diets respectively to study the requirements of energy and protein. The result showed that: (1) ME level didn't effect Average daily feed consumed(ADFC), but it had a downward trend as energy increased, at the same time it was influenced by CP levels significantly, there was no significant difference between ADFC of 17.5% and 20.0% CP levels ,but they were distinctively higher than it of 15.0%(P<0.01).The average daily gain(ADG) of broiler geese differed nonsignificantly among ME levels of 11.87,12.37 and 12.87 MJ/kg, but it was significantly higher than low ME 10.87 and 11.37 MJ/kg(P<0.01),there was no significant difference between CP 17.5% and 20.0% in ADG, but it was higher than 15.0% significantly. Feed gain ratio(F/G) of three high energy levels was less than two low energy levels , F/G of 17.5% and 20.0% was better than 15.0%. (2)Dietary ME levels significantly affect eviscerated carcass weight rate and Abdominal fat rate of broiler geese(P<0.01); Dietary CP levels significantly affect breast muscle rate and leg muscle rate (P<0.01); Dietary ME and CP levels as well as their interaction significantly affect liver relative weight(P<0.01);(3) Dietary ME levels hadn't affect significant on blood parameters((P>0.05), dietary CP levels have a little effects on contents of Serum Uric acid, Cholesterol and Albumin; Especially their interactions significantly affect Serum Albumin(P<0.01). 5～8 weeks:A 5×4 factorial experiment was conducted with 466 29-day-old commercial generation Huoyan geese, which were divided into 20 treatments with 5 replications, each replication comprising 4～5 birds. Five metabolizable energy levels (9.61,10.45,11.29, 12.12, 12.96 MJ/kg) and three crude protein levels (14.0%, 16.0%, 18.0%,20.0%) were used in growing diets respectively to study the requirements of energy and protein. The result showed that: (1) Dietary ME and CP levels didn't significantly affect the average daily gain(ADG) of broiler geese(P>0.05),but ME significantly affects Average daily feed consumed(ADFC) and feed gain ratio(F/G) (P<0.01),there was no significant effect on ADFC by CP(P>0.05),but it had significant effects on F/G(P<0.05),ideal growth perforemance could be obtained by ME 12.12 MJ/kg and CP 16.0%. (2)Dietary ME and CP levels didn't have significant affect on eviscerated carcass weight rate and breast muscle rate and leg muscle rate(P>0.05),but theyaffected abdominal percentage and sebum percentage of broiler geese significantly(P<0.01),a strong front correlation existed among them.(3) Dietary ME and CP levels didn't affect significantly on blood parameters(P>0.05) including Serum Uric acid ,Cholesterol Triglycerides ,Total Protein and Albumin. Conclusion:Through the experiment and combining produce reality,the suitable requirements of ME and CP on broiler geese were 11.87 MJ/kg and 20.0%(or protein-calorie ratio 16.85 gCP/MJ)for 0～4 weeks,12.12 MJ/kg and 16.0%(or protein-calorie ratio 13.20 gCP/MJ) for 5～8 weeks respectively.
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