Ruminal profile of completed feed as influenced by myristic and tannins addition

Faculty of Animal Science, Universitas Brawijaya, Malang 65145, Indonesia

^* Corresponding author: schuzaemi@ub.ac.id

Abstract

The study aimed to determine the effect of adding tannin and myristic acid in complete feed on nutrient content and the Profile of volatile fatty acids (VFA) in vitro. The materials used for this research were corn straw, condensed tannins, myristic acid, coffee waste, rice bran, tapioca byproduct, soybean meal, copra meal, and palm kernel meal. The method was used in this experiment was laboratory experiment with four treatments and three replications. The treatment consisted of T₁ complete feed (40% corn straw + 60% concentrate (be based DM)), T₂ (complete feed + condensed tannins 3%/kg DM and myristic acid 2%/kg DM), T₃ (complete feed + condensed tannins 3%/kg DM and myristic acid 3%/kg DM), and T₄ (complete feed + condensed tannins 3%/kg DM and myristic acid 4%/kg DM). Every treatment was repeated three times and analysed statistically using Randomized Block Design (RBD). The adding of 4% myristic acid to the complete feed (T4) gives the best results, it increased nutrition and propionic acid, but decreased acetic acid, butyric acid, total VFA and C2/C3 ratio.