Forage intake, N and NDF flow to the abomasum and rumen pool sizes of NDF in Bos indicus (Boran) steers fed oat, lablab, native grass hay or wheat straw

摘要

The objective was to investigate forage intake, NDF (neutral detergent fibre) and N flow to the abomasum and rumen pool sizes of NDF in Boran steers fed oat ((O) Avena sativa) hay, lablab ((L) Lablab purpureus) hay, or grass ((G) Andropogon sp, Danthonia subulata) hay or wheat ((W) Triticum aestivum) straw each supplemented with 1.3 kg DM of cotton seed cake. Four ruminally and abomasally cannulated steers (190 ± 15 kg) were used in a balanced 4x4 Latin square. The contrasts were : C1 (L vs O and G), C2 (O vs G) and C3 (W vs others). N and NDF contents (g/kg DM) were 7, 21, 11, 5 and 685, 510, 669, 777 for O, L, G and W. Total collection of faeces was used.