Effect of extrusion of rapeseed oilmeal on rumen
degradability and intestinal digestibility

Effective ruminal protein degradation (EPD) and the intestinal digestibility of undegraded protein (IUPD) of rapeseed oilmeal (RSM) subjected to extrusion at a temperature of 140^oC was determined. The protein EPD coefficient of the extruded rapeseed oilmeal (ERSM) was 55.5%, whereas that of the RSM not subjected to extrusion, 79.3%. The intestinal digestibility of rumen undegraded RSM protein was 55.5%, which was 38.3 percentage points lower than the IUPD of the ERSM. The total tract protein digestibility of both meals was similar. The high IUPD of the ERSM indicates a favourable shift of protein availability from the rumen to further sections of the gastrointestinal tract.

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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.