The research published on animal protein by-products (ABPs) has been conducted using at- line instruments. The aim of this study is to evaluate different strategies to transfer a large spectral database of ABPs recorded in a monochromator instrument, to a FT-NIR instrument coupled to a fibre optic probe of 100 metres length, for the on-site quality control. The results obtained demonstrated that, once a large spectral data base of ABPs (more than 1300 samples) has been transferred from the monochromator to the FT-NIR instrument, the calibrations developed for on-site analysis have similar accuracy that those used previously for at-line analysis.
Currently, it is very demanded by nutritionists the availability of real-time on farm analysis for Total Mixed rations ( TMR ) quality control at the level of individual dairy farms. This study refers to the prediction of Crude Protein ( CP) in TMR, after transference of a library file ( N =394 ) of TMR samples from a monochoromator instrument, to two on-farm portable instruments (NIR4Farm, AUNIR, UK and AURORA, GraiNIT, Italy). The results obtained demonstrated that CP can be predicted by NIRS at “ on farm level”, with an accuracy similar to the most expensive at-line laboratory instruments.
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