Forage quality aspects during conversion to ecological agriculture: a study with multivariate data analysis and near infrared spectroscopy.

adaptation de la production adjustment of production agricultura alternativa agriculture alternative agriculture biologique ajuste agrario alimentation des animaux alternative agriculture animal feeding botanical composition bovin calidad cattle chemical composition composition botanique composition chimique espectroscopia infrarroja feed grasses feed legumes forraje grosero fourrage grossier ganado bovino infrared spectrophotometry leguminosas forrajeras leys nutritive value organic agriculture pradera temporal prairie temporaire quality roughage spectroscopie infrarouge statistical methods trifolium valeur nutritive valor nutritivo