Evaluation of dry matter digestibility and organic matter of in vitro unsaturated fatty acid based ration of ruminant

This study aims to evaluate digestibility in feed ruminants based on unsaturated fatty acids in vitro. This research used cow rumen fluid, forage substrates and concentrates with a ratio of 60:40. The measured variables were digestibility values including: dry matter digestibility, and organic matter in vitro. The experimental design used was Completely Randomized Design consisting of 4 treatments consisting of: (R0) feed without soybean oil, (R1): feed with 2.5% soybean oil; (R2): feed with 5% soybean oil; (R3): feed with soybean oil 7.5% in 100% dry matter (BK). While for experiment using cakalang fish oil was consisted of (R0) feed without fish oil, (R1): feed with fish oil 2.5%; (R2): feed with fish oil 5%; (R3): feed with fish oil 7.5% in 100% dry matter (BK). Each treatment was performed four replications. The results showed that both soybean oil and cakalang fish oil had significant effect (P<0.05) on the digestibility of dry matter and organic matter. The conclusion in this research is as many as 2.5% of both soybean oil and fish oil could be used in ruminant diets because it is able to maintain good digestibility of dry matter and organic matter. Digestibility value of 2.5% use of soybean oil and cakalang fish oil gives the digestibility value such as without adding oil.