Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

N disappearance (%)1 st WorkshopXIII International Feed Technology Symposium100806040200 2 3 4 6 9 16 24 48Incubation time (h)rye barley oat maize w heatGraph 2. Crude protein component degradation in tested feedsPrecondition of optimization of feed rations and mixtures according to the mentionedparameters is determined choice and good knowledge of feed component properties.Therefore it is necessary to analyze the feeds more in detail and number of studied andevaluated parameters grows all the time, e.g. to characterize saccharide componentnecessitates not only to assess the content of crude fibre but also the content ofindividual fractions (acido- and neutral detergent) of fibre, lignin, content of starch,saccharides and proportion among these components. Great differences betweenindividual species of grain crops, but within a species as well, influenced by variety, siteand season were found in the content and proportion of amylosis and amylopectin, ratioof total and soluble non-starch polysaccharides, arabinose and xylose as well asproportion of protoplasmic proteins of albumins and globulins (table 2). This greatvariability results in great differences in utilization of nutrients by monogastric animals(they can cause antinutritive effect) and it influences effectiveness of animal production[5].Table 2. Content of non-starch polysaccharides and pentosans (%)Rye 1 Rye 2 Rye 3 WheatNSP total 15.8 15.5 15.5 10.7insoluble 10.8 11.3 10.5 8.1Pentosans total 8.4 8.3 9.0 5.8insoluble 6.0 6.3 6.0 5.2soluble 2.4 2.0 3.0 0.6Xylose/arabinose 1.62 1.68 1.54 1.4570