Open Access
Table 3.
Comparable measurements of ammonia and TVN levels in a control sample of feather meal and with the addition of methionine
| Sample | Measurement parameters | Ammonia and TVN level |
|---|---|---|
| Feather meal | ammonia (color) | yellow |
| TVN, mg 100 g−1 | 93 | |
| Feather meal + methionine | ammonia (color) | yellow |
| TVN, mg 100 g−1 | 527 |
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