Amino acid digestibility of canola meal estimated with pulse-dose in dairy cows or in roosters
Bibliographic record
Abstract
Intestinal digestibility of ruminally undegraded feed protein (RUP) is needed to formulate dairy rations adequately. Thus, our objective was to compare estimates of amino acid (AA) intestinal digestibility of canola meal rumen residues (CMr) using a pulse-dose in dairy cows or caecectomised roosters. Four cows received a pulse-dose of 40 g 15N-labelled CMr (15N-CMr) into the duodenum. The faeces were collected continuously for 28 hours. The digestibility was estimated from cumulative fecal recovery of 15N-AA. In parallel, caecectomised roosters were used to determine the intestinal digestibility of 15N-CMr. All digestibility coefficients of essential AA estimated with the pulsedose method were lower than those estimated with the roosters. The digestibility coefficients from the pulse-dose method were lower than the 75% used by NRC (2001) for the RUP of CM. The digestibility coefficients of AA obtained with the roosters averaged between 76 and 87%. Reduction of the estimation of metabolizable protein (MP) supply when CM substitutes a protein source is not due to the low RUP digestibility used by NRC.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".