Feed composition in herds with or without postweaning Escherichia coli diarrhea in early-weaned piglets
Bibliographic record
Abstract
Objective: To conduct a preliminary screening of possible risk factors associated with water and feed composition for postweaning Escherichia coli diarrhea (PWECD) in early-weaned piglets. Methods: A case-control study was conducted in Québec, Canada, including 34 herds with weaning age less than 22 days: 17 herds in which PWECD did not occur (Control; Group C) and 17 affected herds (Diarrhea; Group D). Diagnoses of PWECD with colibacillary shock were confirmed by a provincial diagnostic laboratory. Information on rations used in the nursery was collected during a farm visit. Each ration was analyzed, and electrolytic balance was calculated. Rations fed the day before the first occurrence of diarrhea in Group D herds were compared to median values for rations fed on the same postweaning days in Group C herds. Drinking water samples were also analyzed. Results: Higher levels of soybean and canola products (sources of vegetal proteins) were used in Group D herds the day before the first occurrence of diarrhea. Calcium and magnesium levels were higher and zinc concentrations and electrolytic balance were lower in the feeds of Group D herds than in the feeds of Group C herds. There was no relationship between water composition and PWECD status. Implications: Feed content may play a role in the occurrence of PWECD. Protein of animal origin should be included in the feed for the first 3 weeks post weaning, and high calcium levels should be avoided for 1 week. Zinc oxide supplementation is beneficial in reducing incidence of PWECD.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 teacher head, 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".