550 Ethiopian food/feed/forage and concentrate samples were analysedfor nitrogen,fibre-fractions, metabolizable energy and invitro organic matter digestibility to develop mobile and hand-held NIRS calibration and equation models for prediction of these quality traits in a rapid, non-destructive and inexpensive manner. Two NIRS instruments were used: Thermo mobile microPhazir with a sales price of about 40 000 US $ and hand-held TellSpec with a sales price of about 1 500 US $. The coefficient of determination (R2) value for Thermo microPhazir calibration and blind predictions of N, NDF, ADF, ADL, ME and IVOMD ranged between 0.85-0.98 and 0.67-0.97, respectively and for the TellSpec ranged between 0.84-0.96 and 0.58-0.89indicating that mobile and hand-held NIRS can be used for feed evaluation of different feeds with moderate (ADL) to high (ADF, NDF, ME, IVOMD and N) accuracy.
Prasad, K.V.S.V., Yonas, A., Melesse, A., Kosmowski, F., Padmakumar,V. and Blümmel, M. 2019. Mobile and hand-held near infrared spectrometers in feed evaluation―Solutions to challenges? IN: Das, A., Das, S., Sarkar, S., Patra, A.K., Manda, G.P. and Soren, S. (eds.). 2019. Nutritional Strategies for Improving Farm Profitability and Clean Animal Production. Book of Abstracts of International Conference on Animal Nutrition 2019, Kolkata, India, 17-19 December 2019. Karnal, India: National Dairy Research Institute.