217 Comparative Effects of Dietary Methionine and Cysteine Supplementation on Redox Status and Intestinal Integrity in Immunologically Challenged-weaned Pigs
Bibliographic record
Abstract
Abstract The aim was to investigate the effects of dietary Met and Cys supplementation in immunologically challenged-weaned pigs. Forty weaned piglets (6.51 ± 0.29 kg) were randomly allocated to five treatments and fed the assigned diets for 9 days. The treatments included: (1) sham-challenged control (SCC), (2) challenged control (CC), (3) MET (CC + 0.1% DL-Met supplementation), (4) CYS (CC + 0.1% L-Cys supplementation), and (5) MET+CYS (CC + 0.1% DL-Met and 0.1% L-Cys supplementation). Piglets were intramuscularly injected with either lipopolysaccharides (LPS; 30 μg/kg) or saline solution on day 7. All data were analyzed using single degree of freedom contrasts in the mixed procedure of SAS to test the effect of LPS challenge, Met supplementation, Cys supplementation, and Met × Cys supplementation. The CC group had lower (P < 0.05) villi height and villi surface area and glutathione (GSH) concentration and higher (P < 0.05) flux of 4-kDa fluorescein isothiocyanate dextran (FD4) in the jejunum than SCC group. Dietary Cys supplementation increased (P < 0.05) villi surface area, GSH concentration and reduced GSH: oxidized GSH and decreased (P < 0.05) the flux of FD4 in the jejunum. Dietary Met supplementation enhanced (P < 0.05) hepatic GSH content. Pigs in the MET group had greater mRNA abundance of IL-6 and IL-10 (P < 0.05) and lower serum IL-8 concentration than those in the CC group. There were Met × Cys interactions (P < 0.05) in serum IL-4 and IL-8 concentrations and hepatic Trolox equivalent antioxidant capacity. In conclusion, dietary L-Cys supplementation restored intestinal integrity and GSH concentration that were affected by LPS challenge. Dietary DL-Met supplementation improved hepatic GSH and reduced systemic inflammatory response, but antagonistic interaction with dietary Cys supplementation was observed in inflammatory response and redox status.
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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) | 0.001 | 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 | 0.001 | 0.001 |
| 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".