208 The interactive effects of a matrix coated organic acids blend and antibiotic supplementation in growing pigs
Bibliographic record
Abstract
Dietary addition of organic acids can promote nutrient digestibility, growth performance, and gut health outcomes in pigs. Thus, we investigated the effect of supplementing a matrix coated organic acids blend (MCOA) without or with antimicrobial growth promoters (AGP) in growing pig diets on growth performance, hematological profiles, diarrhea score, and in vitro fecal noxious gas emission. Ninety-six growing pigs [(Yorkshire × Landrace) × Duroc] with an average BW of 47.71 ± 1.15 kg (mean ± SD) were used in a 6-wk experiment. Based on initial BW and gender, pigs were randomly blocked and allocated to 1 of 4 experimental treatments each with 12 replicates and 2 pigs per pen. Pigs were allotted to diets containing 0 or 0.2% MCOA, and 0 or 0.25% AGP (aureomycin, Aureo S-P 250 G) according to a 2 × 2 factorial arrangement of treatments. For hematology and serum urea N (SUN) measurements, 1 pig from each pen was randomly selected, and blood samples (10 mL per pig) were collected via jugular vein puncture on d 41. The occurrence and severity of diarrhea were monitored and assessed during the whole experiment. All data were statistically analyzed using the PROC MIXED procedure of SAS. Pigs fed the diet supplemented with MCOA had higher feed efficiency (G:F) than those fed the diets without MCOA (0.38 vs. 0.36; P = 0.030). Moreover, AGP × MCOA supplementation tended to have higher G:F (P = 0.083). However, pigs fed AGP × MCOA diet had reduced SUN (P = 0.024). Diarrhea score was not affected (P > 0.10) by dietary AGP or MCOA. Pigs fed diet supplemented with AGP had reduced fecal ammonia (NH3) gas emission compared to those fed without AGP (8.49 vs. 8.80 ppm; P = 0.037). Moreover, pigs fed diet supplemented with MCOA had reduced fecal NH3 and acetic acid gas emission compared to those fed without MCOA (8.36 vs. 8.93 ppm, and 1.73 vs. 2.79 ppm; P < 0.001, and P = 0.048, respectively). In conclusion, growing pigs fed diets supplemented with MCOA had improved G:F and similar beneficial responses as those fed diets with AGP in terms of reducing serum urea N, and in vitro noxious gas emission. This suggests that supplementation of MOCA can promote G:F of growing pigs in antibiotic-free-feeding regimens.
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".