31. No enzymes are secreted in the rumen . 32. Lipids are otherwise inert in the rumen . 33. This gives rise to rumen acidosis and often feed intake of the ruminant will drop. 34. The approved devices used are the commonly used ear tags or alternatively a rumen bolus. 35. Rumen hypomotility, gastrointestinal stasis and respiration.36. It is predominantly observed in the rumen of these animals, and is strictly anaerobic. 37. Today, the president is Rumen Radev 38. Ruminants can extract food energy from the respiration of cellulose because of bacteria in their rumens . 39. From the esophagus it is taken back to the mouth with retro buffer the rumen pH. 40. Modern microbial ecology was launched by Robert Hungate and coworkers, who investigated the rumen ecosystem.