Digestibilidad de fósforo y proteína de raciones suplementadas con fitasa en tilapia,Oreochromis sp.
Bibliographic record
Abstract
Título en ingles: Digestibility of phosphorus and protein of rations supplemented with phytasefor hybrid tilapia,Oreochromis sp.Resumen: El presente estudio tuvo por objeto evaluar el efecto de la suplementación de fitasa sobre la digestibilidad del fósforo y la proteína del gluten de maíz (GM), harina de trigo duro (HTD) y soya integral cruda (SI) en dietas para tilapia roja, Oreochromissp. Para calcular los coeficientes se utilizó el método indirecto con marcador de óxido de cromo III, recolectando las heces por el sistema Guelph modificado. Se seleccionaron juveniles de Tilapia roja, Oreochromissp., con un peso promedio de 100 g. Las raciones estaban constituidas por dieta referencia (DR) (69.5%), 0.5% de marcador inerte (óxido de cromo III), el ingrediente a evaluar (30%) y para cada uno de ellos, fitasa en niveles de 0.0, 500y 1000Unidades de fitasa (UDF)/kg dieta. Los coeficientes de digestibilidad aparente (CDA) de la proteína obtenidos fueron: sin inclusión de fitasa 94.7, 84.5 y 90.3%, con 500 UDF 95.1, 84.1 y 89.3% y con 1000 UDF 97.6, 90.8 y 92.9% para GM, HTD y SI respectivamente; en cuanto a CDA del fósforo los resultados para GM variaron entre 30.7% y 69.8%, para HTD entre 46.6% y 51.1% y entre 44.0% y 54.7% para SI. Los CDA de la proteína y fósforo de la soya integral y del trigo duro no fueron afectados significativamente por el nivel de adición de la fitasa (P>0.05); sin embargo, los CDA de la proteína y el fósforo mostraron tendencia a ser mayores cuando se adicionó 1000 UDF. Los CDA de la proteína del gluten de maíz mostraron diferencias significativas entre la dieta de 0 UDF de fitasa y la que tenía 1000 UDF (p<0.05) y para el CDA del fósforo las diferencias se presentaron entre 500 UDF y 1000UDF.Palabras claves: Nutrición; Coeficientes de digestibilidad aparente; ácido fítico; peces.Abstract: This study aimed to assess the effect of phytase supplementation on digestibility of phosphorus and protein of corn gluten (GM) wheat flour (HTD) and crude whole soybean (SI). To estimate the coefficients used the indirect method with chromic oxide marker, collecting the faces through the Guelph system changed. Red tilapia (Oreochromis sp.) juvenile selected was selected with an average weight of100 g. The diets were constituted by reference diet (DR) (69.5%), 0.5% inert marker (chromic oxide III), the ingredient to evaluate (30%) and each of them, phytase at levels of 0.0, 500 and 1000 Uphytase /kg diet. The apparent digestibility coefficient (CDA) of protein obtained for the inclusion of 0UDF was: GM = 94.7%, HTD = 84.5% and SI = 90.3%; for 500UDF was: GM = 95.1% TD =84.1% and SI = 89.3% and for 1000 U phytase were: GM = 97.6%, HTD = 90.8% and SI = 92.9%. As CDA match results for GM were between 30.7% and 69.8% for HTD from 46.6% and 51.1% and for SI between 44.0% and 54.7%. The ADC of protein and phosphorus in soybeans and durum wheat were not significantly affected by the level of addition of phytase (P> 0.05), however, the CDA of the protein and phosphorus showed a tendency to be higher when addedUDF 1000. The CDA of the protein of corn gluten showed significant differences between dietary phytase 0 Uphytase and 1000 Uphytase (p<0.05) and the CDA of phosphorus differences arose between 500 and 1000Uphytase.Key words: Nutrition; Apparent digestibilitycoefficients; phytic acid; fish.
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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) | 0.001 | 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".