The effect of the duration of the cottonseed meal on the degradability of DM in the rumen was determined using the in situ technique. The degradation of DM was determined in nylon bags suspended in the rumen for 2, 4, 8, 16, 24 and 48h. The rumen degradability of cottonseed meal dry matter at ruminal outflow rate of 0.02/h, 0.05/h and 0.08/h were 64.6, 51.9 and 45.2 respectively. Dry matter degradability of Cottonseed meal at 0, 2, 4, 8, 16, 24 and 48 h incubation were 21.64, 29.29, 35.13, 44.63, 51.93, 62.11 and 76.68 percent respectively.
