Table 4.
Energy balance in pigs fed experimental diets (as-fed basis),1) Exp. 1
| Item2) | Diet | SEM | p-value | |||
|---|---|---|---|---|---|---|
|
| ||||||
| Corn | Meat meal | Fish meal | Soybean meal | |||
| Diet intake (kg/d) | 2.08 | 2.07 | 2.13 | 2.07 | 0.099 | 0.968 |
| Feces output (kg/d) | 0.198b | 0.285a | 0.272a | 0.199b | 0.0100 | <0.001 |
| Urine output (kg/d) | 4.27 | 3.30 | 4.04 | 5.06 | 0.129 | 0.841 |
| GE in feces (kcal/kg) | 4,833a | 4,515ab | 4,182b | 4,751a | 135.4 | 0.014 |
| GE in urine (kcal/kg) | 128.8 | 165.9 | 141.5 | 95.7 | 15.53 | 0.043 |
| GE intake (kcal/d) | 7,971 | 8,229 | 8,579 | 8,190 | 387.4 | 0.740 |
| Fecal GE output (kcal/d) | 957b | 1,287a | 1,133ab | 945b | 51.5 | 0.001 |
| Urinary GE output (kcal/d) | 371 | 508 | 551 | 463 | 76.5 | 0.413 |
| ATTD of energy (%) | 87.8a | 84.4b | 86.7ab | 88.4a | 0.66 | 0.003 |
| Feed DE (kcal/kg) | 3,363b | 3,354b | 3,490a | 3,493a | 25.5 | 0.001 |
| Feed ME (kcal/kg) | 3,174 | 3,106 | 3,229 | 3,267 | 53.9 | 0.238 |
SEM, standard error of the means; GE, gross energy; ATTD, apparent total tract digestibility; DE, digestible energy; ME, metabolizable energy.
1)
Each least squares mean represents 6 observations.
2)
Diet intake, feces output, and urine output were based on 5 d of collection.
a,b
Means within a row without a common superscript letter differ (p<0.05).