In vitro digestibility and rumen pH of diet comprised by different level of Indigofera zollingeriana and Pennisetum purpureum

The objective of this research was to evaluate the effects of different levels of Indigofera zollingeriana and Pennisetum purpureum cv . Mott on the in vitro digestibility and rumen pH. The treatments were T1=60% Pennisetum purpureum cv . Mott, T2 = 45% Pennisetum purpureum cv . Mott + 15% Indigofera zollingeriana, T3 = 30% Pennisetum purpureum cv . Mott + 30% Indigofera zollingeriana, T4 = 15% Pennisetum purpureum cv . Mott + 45% Indigofera zollingeriana, and T5 = 60% Indigofera zollingeriana . All the treatments supplied with rice bran 40%. The result showed that there are no significant difference on ruminal pH (P>0.05). The ruminal pH were in normal range that were 6.66-6.73. The increasing level of Indigofera zollingeriana to Pennisetum purpureum cv . Mott had no significant effect to dry matter and organic matter digestibility. The dry matter digestibility were around 60,56%-70.46% while the organic matter digestibility were around 60.01%-65.99%. This research indicated that the increasing level of Indigofera could decrease the digestibility. The treatment T4 (15% P. purpureum + 45% Indigofera zollingeriana ) showed the highest digestibility values.