Ruminants

Question 1

Sedimentation / Flotation test

Answer 1

Time for complete sedimentation, flotation of solid particles
4-8 mins.

• Active: sedimentation, subsequent floating
• Incr sedimentation
• Inactive: rapid sedimentation, ~ / NO floating
• Frothy: everything is floating -> frothy bloat (Hoflund D., treatment with Smimetics-ruminal atonia).

Question 2

Explain reducing ability of ruminal fluids

Answer 2

Bacteria -> dehydrogenation -> reducing ability
Tests:
- Nitrite reduction (KNO2): in presence of nitrtite => PINK (disappears in 10 mins), green fodder/ruminal decomp/bloat => fast, deficient ratio in feed => slow
- Methylene blue: discoloration, blue ring on the surface
- TTC: incubation => RED