Influence of some digestive processes on the digestion by cattle of cereal grain fed whole

摘要: Pen studies were conducted with cattle in which the digestibility, rate of fermentation, site digestion and grain loss faeces measured diets comprising 4.8 kg one or other four cereal grains together 2.4 pasture hay. The cereals Avon oats, Swan Olympic wheat Emblem natural weights 48.3, 60.5, 81.3 78.8 hl-1 particle size index 24, 35, 31 14, respectively. apparent vivo digestibility oats 71.9 74.6 did not differ significantly (P > 0.05). However, there was less cracked during initial mastication (12.5 vs. 19.2 per cent a lower percentage voided (4.3 9.3) for compared < higher than (77.5 72.6 cent) ;these performances accompanied by percentages (17.0 22.3) whole DM (14.6 18.4 major difference oat varieties that rumination accounted high proportion breakdown whereas digested rumen fermentation only small broken down rumination. important all rations. For light heavy soft hard wheat, 66 cent, 44 27 17 total