Low Lice Prevalence in On-Cage Laying Hen Free of Treatment, Under Sub-humid Tropical Condition
Bibliographic record
Abstract
Egg production, in response to animal welfare concerns has shifted towards the use of open environments and there has been increasing interest in egg production systems with access to pasture. However, ectoparasite infestation is one of the main health problems affecting poultry. The objective of this research was to determine the prevalence of ectoparasite species (lice) in cage-free ISA Brown laying hens in a tropical sub-humid environment. Ninety hens of 45 weeks of age and an average weight of 1,850 g were inspected, of which 44 were found to be positive for a prevalence of about 50%. According to the taxonomic keys used, the specimens were identified as the louse Menacanthus stramineus. A low prevalence of lice in free of cage hens without ectoparasiticide treatment, was observed. Future studies are suggested to compare prevalences in other production units, as well as to evaluate possible clinicopathological conditions and their repercussions on the productive performance of the birds.
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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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".