Evaluation of crude protein fractions for silages in ruminant nutrition

KOUKOLOVÁ, Marie, HOMOLKA, Petr and KOUKOLOVÁ, Veronika. Evaluation of crude protein fractions for silages in ruminant nutrition. Krmivářství, 2019, vol. 23(2), p. 42-44. ISSN 1212-9992.
Year2019
CathegoryPublication in specialized journals
Internal link19150.pdf
Abstract

The objective of this study was to evaluate the nutritional value of typical silages used in ruminant nutrition by Cornell system. This study includes 5 silages (clover, corn, rye grass, grass and alfalfa). Silages were analyzed for individual nitrogen fractions (A, Bl, B2, B3 a C) and then statistically evaluated. The results declared influence of crude fibre (CF) and fibre fractions (NDF, ADF, ADL) content on individual nitrogen fractions. The highest values of CP (187.8 and 192.8 g/kg DM) and fraction A (612.1 and 594.7 g/kg CP) were found for alfalfa and rye grass silages, respectively. The same trend was confirmed for fraction C, which is associated with lignification. The highest value of this fraction C was 391.6 g/kg CP for grass silage corresponding with ADL (r = 0.777, P