ARCTIC Digestibility of Plants in Ruminal Fluids of Barren-Ground Caribou
Bibliographic record
Abstract
ABSTRACT. The comparative digestibilities of plants and their rates of digestion in vitro were assessed by fermentation with ruminal fluids obtained from barren-ground caribou (Rungifer rurundus groenlundicus) shot on their winter range in the southern Northwest Territories. There was a near-linear increase in the in vitro, dry-matter disappearance (IVDMD) with fermentation time (30-120 h) for all eight lichen species that we tested. In contrast, IVDMD was essentially maximal after 60 h fermentation for 10 of 11 non-lichen species. The green leaves of Carex rosrruru and Equisetum vuriegurum were the only species with IVDMDs higher than 50 % after a 60-63 h fermentation period. The two species of mosses and a liverwort were poorly digested (15-27%). The addition of 63 mg of urea to each tube markedly increased the digestibilities of both species of lichens tested, and that of Vuccinium vitis-idueu, but it lowered the IVDMD of Salix and Betula stems and the green and cured parts of Carex rosrruru. The IVDMDs of four lichen species collected on the Canadian Arctic Islands were higher than those of eight terricolous species obtained from the mainland winter range of R.r. groenlundicus. Key words: Rungifer, caribou, in vitro, digestibility, forages, lichens, rates, Canada RfiSUME. La digestibilitt comparative de plantes et leur taux de digestion in vitro ont t t t Bvaluks par la fermentation de fluides ruminaux obtenus de caribous des landes (Rungifer rurundus groenlundicus) tirts dans leur habitat hivernal dans le sud des Territoires du Nord-Ouest. I1 y a eu une augmentation quasi-lintaire de la disparition in vitro de matibre sbche (DIVMS) avec un ptriode de fermentation (30-120 h) pour les huit especes de lichens mises B I’tpreuve. Par opposition 8 ceci, la DIVMS Btait essentiellement maximale aprbs une fermentation de 60 h dans 10 des 11 espbces de non-lichens. Les feuilles vertes du Curex rosrraru et de 1’Equiseturn vuriegutum ttaient les seules espbces
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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 | 0.000 |
| 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".