A PCR-RFLP method to identify the <i>RN</i><sup>–</sup> gene in retailed pork chops
Bibliographic record
Abstract
The RN– phenotype in swine is associated with an increase in muscle glycogen. The increased glycogen leads to increased drip and cooking loss and inferior ham quality. RN– type pork was usually identified by a biochemical measure of glycolytic potential (GP), which is an estimated sum of 2(glycogen, glucose, glucose-6-phosphate) + lactate. Recently, a mutation in the PRKAG3 gene was reported to be the cause of the dominantly inherited RN– phenotype. This note describes a new BsrB1 PCR-RFLP technique used to rapidly identify the PRKAG3 mutation and its correlation with biochemical markers for RN– type pork. The PRKAG3 BsrB1 mutation was not found in 27% of retail pork chop samples that had high GP values. Key words: Pigs, RN–, PRKAG3, glycogen potential.
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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 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 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".