Abstrak. Rumen adalah salah satu lambung ternak ruminansia dalam melakukan proses pencernaan secara kimiawi yang dibantu oleh mikroba rumen. Selain itu, pakan merupakan faktor penting bagi karenanya perlu dilakukan suatu metode guna menguji fermentabilitas cocok dan baik sapi. Tujuan penelitian ialah untuk mengevaluasi fermentasi cairan rumen sapi menggunakan daun ubi kayu konsentrat. Penelitia...

That microbial fermentation in the rumen can progress without added amino acids, peptides or proteins was elegantly demonstrated by Virtanen (1966) who maintained lactating dairy cows for prolonged periods on purified diets with urea as the only N source. However, there have also been numerous studies which have demonstrated benefits of feeding pre-formed amino acids, either as free amino acids...

Steers were fed 70∶30 forage∶concentrate diets for 205 days, with either grass hay (GH) or red clover silage (RC), and either sunflower-seed (SS) or flaxseed (FS), providing 5.4% oil in the diets. Compared to diets containing SS, FS diets had elevated (P<0.05) subcutaneous trans (t)-18:1 isomers, conjugated linoleic acids and n-6 polyunsaturated fatty acid (PUFA). Forage and oilseed type influe...

Four ruminally cannulated sheep were used in a crossover design to assess the postprandial changes of fiber-degrading microbes in the solid phase of the rumen of sheep fed 2 high-forage diets. The diets had forage:concentrate ratio of 70:30 (DM basis) and either alfalfa (Medicago sativa) hay (AL) or grass hay (GR) as forage (FOR). Sheep were fed twice daily, and samples from solid rumen digesta...