Clinical progression of a case of toe-tip necrosis syndrome in a feedlot steer.
Bibliographic record
Abstract
A fractious feedlot steer was diagnosed with hind-limb lameness at 19 d on-feed. Clinical examination (Week 0) revealed white line separation of both lateral digits of both hind feet. Debridement confirmed toe-tip necrosis syndrome and the steer was treated with oxytetracycline (20 mg/kg, SC) and meloxicam (0.10 mg/kg, SC). Radiographs revealed osteolysis of P3 bones of both lateral digits, and by Week 4 the medial claw of the right hind foot was similarly affected. Clinical and radiographic examinations were conducted over a 25-week period. Rectal temperature, body weight (BW), cortisol (salivary and hair), haptoglobin, and complete blood (cell) counts were obtained over a 22-week period. New horn growth covered the debrided sole defects by Week 7, and radiographs confirmed remodelling of the P3 bones. At slaughter (Week 25), both hind feet appeared normal except for the lateral digits being longer than the medial digits. Radiographs indicated permanent changes in the P3 bones. Although this animal had osteolysis in 3 of 4 hind-limb digits, it was successfully treated with antimicrobial therapy and debridement on Week 0 followed by a second debridement in Week 2. Early intervention and debriding are central to preventing other sequelae such as deep digital sepsis. Key clinical message: A feedlot steer diagnosed with toe-tip necrosis syndrome, including osteolysis of 3 of 4 hind-limb digits, was successfully treated with debridement and antimicrobial therapy. Radiographic examinations confirmed remodeling of the distal phalanges (P3) and absence of active infection 25 wk after treatment. This case underscores that feedlot animals with osteolysis of multiple P3 bones can be treated successfully using debridement and antimicrobials.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".