Assessing the Potential of Fecal NIRS for External Marker and Digestibility Predictions in Broilers
Tej, Oussama (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Albanell Trullas, Elena (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Kaikat, Ibtissam (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Manuelian, Carmen L (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Data:	2025
Resum:	This study evaluated fecal near-infrared spectroscopy (fNIRS) potential to predict three external markers (Yb, Ti, and polyethylene glycol (PEG)) and dry matter digestibility (DMD) calculated from these markers and fiber fractions. A total of 192 fecal samples were collected from 576 Ross 308 male chicks supplemented with TiO 2 (2 g/kg), Yb 2O 3 (50 mg/kg), and PEG (5 g/kg) for 8 d. Reference values for Ti and Yb were obtained using an inductively coupled plasma-optical emission spectrometer, for fiber fractions via ANKOM, and for PEG content using an ad hoc fNIRS model. Prediction models were developed in external validation with 25% of the samples. Good and fair prediction models were built for Ti and Yb, respectively, and considered adequate for rough screening. The DMD models based on Yb and ADF were unreliable, whereas the model based on Ti was suitable for rough screening. The PEG prediction model built during the adaptation period performed exceptionally well; however, the DMD prediction based on PEG highlighted limitations due to diet differences during both the adaptation and experimental periods. In conclusion, fNIRS shows promise for screening Ti and Yb fecal content and DMD using Ti. However, tailored PEG prediction equations need to be developed for each specific diet.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	NIRS ; PEG ; Broiler ; Digestibility marker ; Excreta
Publicat a:	Animals, Vol. 15 Núm. 15 (2025) , p. 2181, ISSN 2076-2615

DOI: 10.3390/ani15152181
PMID: 40804969

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