Table 6.
Concentration, apparent total tract digestibility (ATTD), and standardized total tract digestibility (STTD) of phosphorus in fish waste (FW), supermarket waste (SMW), and fruit and vegetable waste (FVW) determined in experiment 2 (as-fed basis)
| Item | FW | SMW | FVW | SEM | P value |
|---|---|---|---|---|---|
| Total P, % | 2.95 | 0.38 | 0.26 | — | — |
| ATTD P, % | 56.00b | 67.97a | 52.95b | 2.38 | <0.01 |
| STTD P, % | 59.10b | 81.94a | 74.06a | 2.38 | <0.01 |
| Standardized total tract digestible P, % | 1.74a | 0.31b | 0.19b | 0.07 | <0.01 |
a,b,cMeans with different superscripts within a row differ (P < 0.05).
Values for STTD were calculated by correcting values for ATTD for basal endogenous P loss using 190 mg/kg dry matter (DM) intake (NRC, 2012). The daily basal endogenous P loss was calculated by multiplying daily DM intake by 190 mg/kg DM.