Protein degradability of silages in the rumen
estimated by NIRS

The feasibility of estimating in situ ruminal protein degradability parameters (A, B, C, ERD) of silages by NIRS was investigated. In situ protein degradability of maize (n=12), whole-crop cereal (n=18) and lucerne (n=24) silages was determined using two ruminally cannulated Holstein heifers. The NIRS measurements were conduced using a 19-flter spectrophotometer, InfraAlyzer 450R, in the range of 1445-2348 nm. Calibration equations based on 5 terms for all (n=54) and for 3 subsets of different kinds of silages were calculated. The NIRS method can be successfully used to estimate the ERD of silages. By using small, homogenous files, the precision of estimation can be increased and the standard error of estimation decreased.

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1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.