Ruminants - Rumen Physiology - Rumination

3 important questions on Ruminants - Rumen Physiology - Rumination

What are the rumination steps?

1. Contraction of reticulum
2. Relaxation of cardia
3. Closure of glottis
4. Inspiratory movement -> negative intrathoracic pressure
5. Food enters esophagus and goes through reverse peristalsis
6. Food returns to rumen for further fermentation after rumination

What is the purpose of remasticating cud?

1. Crushing of large particles
2. PH buffer (saliva) added

What happens after food reaches the abomasum?

Typical monogastric digestive processes + lysozyme for bacterial cell wall digestion

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