Predicting ruminal degradability and chemical composition of corn silage using near-infrared spectroscopy and multivariate regression.

Autor: Pucetti P; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Valadares Filho SC; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Roque JV; Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., da Silva JT; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., de Oliveira KR; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Silva FAS; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Cardoso WJ; Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., E Silva FF; Department of Animal Sciences, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Swanson KC; Department of Animal Sciences, North Dakota State University, Fargo, North Dakota, United States of America.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Apr 18; Vol. 19 (4), pp. e0296447. Date of Electronic Publication: 2024 Apr 18 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0296447
Abstrakt: The aim of this study was to develop and validate regression models to predict the chemical composition and ruminal degradation parameters of corn silage by near-infrared spectroscopy (NIR). Ninety-four samples were used to develop and validate the models to predict corn silage composition. A subset of 23 samples was used to develop and validate models to predict ruminal degradation parameters of corn silage. Wet chemistry methods were used to determine the composition values and ruminal degradation parameters of the corn silage samples. The dried and ground samples had their NIR spectra scanned using a poliSPECNIR 900-1700 model NIR sprectrophotometer (ITPhotonics S.r.l, Breganze, IT.). The models were developed using regression by partial least squares (PLS), and the ordered predictor selection (OPS) method was used. In general, the regression models obtained to predict the corn silage composition (P>0.05), except the model for organic matter (OM), adequately estimated the studied properties. It was not possible to develop prediction models for the potentially degradable fraction in the rumen of OM and crude protein and the degradation rate of OM. The regression models that could be obtained to predict the ruminal degradation parameters showed correlation coefficient of calibration between 0.530 and 0.985. The regression models developed to predict CS composition accurately estimated the CS composition, except the model for OM. The NIR has potential to be used by nutritionists as a rapid prediction tool for ruminal degradation parameters in the field.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Pucetti et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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