Maja Fijałkowska

Changes of Nitrogen Compounds During Ensiling of High Protein Herbages – A Review

Abstract Losses of crude protein during ensiling of herbages, in contrast to carbohydrates, do not affect the reduction of its content; their form is changed into greater solubility non-protein compounds and also highly degraded forms, which lower the efficiency of the microbial protein synthesis in the rumen. These processes are accompanied by a change of amino acid composition of herbage protein and decrease in intestinal digestibility of protein from feeds as a result of the formation of indigestible complexes with carbohydrates (ADIN). Reduction of protein degradation in silages is achieved by accelerated acidity through addition of acids or dominance of homofermentative bacteria. The positive effects of fermentation inhibitors or sorbents use, as well as the wilting of raw material on the level and rate of protein degradation were demonstrated by many researchers. A greater contribution of protein nitrogen and reduction of deamination in silages can also be obtained by using bacteria inoculants. Increasing the proportion of protein nitrogen is accompanied by the improved efficiency of microbial protein synthesis.

Ensiling suitability and microbiological quality of Virginia fanpetals biomass

Abstract Virginia fanpetals biomass is relatively suitable for ensiling when stem structure is damaged during harvest. Virginia fanpetals biomass is characterized by extensive lactic acid fermentation with a low proportion of volatile fatty acids (VFA). A microbiological evaluation confirmed the predominance of lactic acid bacteria and the presence of a small group of fungi. Ensiling effectively eliminated toxin-producing Aspergillus spp.