199 Effect of tail-end dehulling of canola meal on apparent and standardized total tract digestibility of phosphorus when fed to growing pigs
Bibliographic record
Abstract
Tail-end dehulling of canola meal (CM) has been identified as a means to reduce dietary fiber and increase crude protein content in the dehulled meal. This procedure also increases the total and non-phytate phosphorus (P) content in the dehulled meal. However, it is unclear if dehulling affects P digestibility in the different fractions (i.e., the dehulled meal and the coarse fraction) and if it differs when fed to growing pigs at 2 different body weights (BW). Therefore, 2 experiments were conducted to determine the effect of tail-end dehulling of CM on apparent (ATTD) and standardized (STTD) total tract digestibility of P in growing pigs. Diets containing non-dehulled (RCM), dehulled (DCM), and coarse (CCM) solvent extracted CM from Brassica napus black as the only source of P were fed to growing pigs at 2 different BW. A total of 48 pigs were used for the two experiments. In Exp. 1, 24 barrows [(Yorkshire-Landrace) × Duroc] of 24.5 + 1.68 kg BW were individually housed in metabolism crates and fed the experimental diets for 10 d for total fecal collection. In Exp. 2, 24 barrows with an average initial BW of 73.8 + 4.93 kg were used; experimental diets and fecal collection procedures were the same as Exp. 1. Each experiment used 6 replicate pens per treatment. A P free diet was used to determine basal endogenous losses of P. Data were analyzed as a completely randomized design using the MIXED procedure of SAS. In Exp. 1, the ATTD and STTD of P were greater (P < 0.05) for DCM (42.4 and 46.1%) than for the RCM (32.0 and 35.7%) and CCM (24.5 and 28.4%) diets. In Exp. 2, the same trend continued, the ATTD and STTD of P were greater (P < 0.05) for DCM (38.7 and 42.8%) than for the CCM diet (22.6 and 26.8%), whereas the values for RCM diet were intermediate (31.0 and 35.0%) and not statistically different from the DCM and CCM. In conclusion, dehulling canola meal increased apparent and standardized total tract digestibility of P in growing pigs of different BW.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".