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Evaluation of Two Equations for Prediction of Digestible Energy in Mixed Feeds and Diets for Horses

Articolo
Data di Pubblicazione:
2022
Abstract:
Several authors have developed equations for estimating digestible energy in horse feeds as an alternative to the inconveniences of in vivo digestibility assays. We aimed to evaluate two of such equations. A dataset was constructed from the literature with 32 mixed feeds and diets of known proximate composition, whose digestibility was measured in in vivo assays. Then, the di- gestible energy of the mixed feeds and diets was predicted with both equations from their proxi- mate components. Precision, accuracy, reproducibility, bias, and decomposition of total error of predictions were determined. Both equations performed almost equally well (R2 = 0.89 vs. 0.87, root mean square error of prediction = 183 vs. 217 kcal/kg dry matter, concordance correlation coefficient = 0.91 vs. 0.86, and linear error = 24.6 vs. 33.6% of total error). Linear bias (p < 0.01 in both equations) resulted in overvaluation of low digestible energy feeds and, to a lesser extent, undervaluation of high digestible energy feeds and was significantly (p < 0.05) related to crude fiber. The obtained results indicate that the accuracy of both equations could be improved by reassessing the effects of crude fiber on the digestibility of the other proximate components.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
digestibility; energy; feeding; nutrition; equine
Elenco autori:
Martínez Marín, Andrés Luis; Valle, Emanuela; Bergero, Domenico; Requena, Francisco; Forte, Claudio; Schiavone, Achille
Autori di Ateneo:
BERGERO Domenico
FORTE Claudio
SCHIAVONE Achille
VALLE Emanuela
Link alla scheda completa:
https://iris.unito.it/handle/2318/1867098
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1867098/1011310/Martinez%20Marin%20et%20al%202022.pdf
Pubblicato in:
ANIMALS
Journal
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Settori (12)


LS9_10 - Veterinary and applied animal sciences - (2022)

CIBO, AGRICOLTURA e ALLEVAMENTI - Agricoltura e Produzioni Vegetali

CIBO, AGRICOLTURA e ALLEVAMENTI - Allevamento e Produzioni Animali

CIBO, AGRICOLTURA e ALLEVAMENTI - Chimica e cibo

CIBO, AGRICOLTURA e ALLEVAMENTI - Farmacologia Veterinaria

CIBO, AGRICOLTURA e ALLEVAMENTI - Miglioramento e difesa delle colture

CIBO, AGRICOLTURA e ALLEVAMENTI - Tecnologie alimentari e microbiologia degli alimenti

MEDICINA, SALUTE e BENESSERE - Ricerca Traslazionale e Clinica

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Energia e Fonti Energetiche

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Foreste e Legno

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Risorsa suolo e ambiente

SCIENZE DELLA VITA e FARMACOLOGIA - Interazioni tra molecole, cellule, organismi e ambiente
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