Table 3. Fasting Body Weight, Fasting Energy Expenditure (FEE) and Contribution of Oxidized Carbohydrate, Fat and Protein to FEE in Six-Month-Old Growing Lambs.
| Females (n=9) | Males (n=9) | RSD | P value | |
|---|---|---|---|---|
| Fasting body weight, kg | 27.3 | 33.5a | 1.5 | < 0.01 |
| Daily energy expenditure, MJ/day | 3.78 | 4.26a | 0.11 | < 0.01 |
| RQ (CO2 production/O2 consumption) | 0.771 | 0.765 | 0.007 | NS |
| Fasting energy expenditure, kJ/kg0.75 | 321 | 309 | 8.8 | NS |
| Source of Energy Expenditure | ||||
| Carbohydrate oxidation, kJ/day | 0.63 | 0.66 | 0.07 | NS |
| Fat oxidation, kJ/day | 2.34 | 2.62 | 0.12 | NS |
| Protein oxidation, kJ/day | 0.83 | 0.98 | 0.07 | NS |
| Source of Energy Expenditure, % | ||||
| Carbohydrate oxidation | 17 | 15 | 2.2 | NS |
| Fat oxidation | 61 | 62 | 2.1 | NS |
| Protein oxidation | 22 | 23 | 1.6 | NS |
aValues are means ± relative standard deviation (RSD)
Abbreviations: RQ, Respiratory quotient; NS, Non-significant (P>0.05)