Physical measurements applied to "on line" quality control in feed manufacturing
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Laboratoire de Technologic Appliqude a la Nutrition, INRA, Rue de la Ge
Tecaliman, B.P. 71627,44316 Nantes Cedex 03, France
Acceptance date: 1997-10-15
Int. Agrophys. 1997, 11(4): 237–243
On line control provides real time measurement of the feed quality as it is being manufactured. Real time measurement may contribute to a better information of the quality. It allows to detect eventual disturbances of processing and to make the equipment self-running. Numerous methods are available for each step of feed processing: near infra-red spectroscopy for proximate analysis (proportioning), laser diffraction for particle size (grinding/classifying), abrasion test (pelleting). A particular attention has to be paid to sampling methodology and to the validity of the relationships between the considered quality criteria and process variables.