Figure

Fig. 3.12. A model of particle dynamics in the reticulo-rumen. Two major pools, defined as inescapable and escapable from the reticulo-rumen, are produced by a combination of particle density (specific gravity) and particle size. Light particles remain in the dorsal sac associated with the fibrous ‘raft’ and cannot leave the rumen until they are sufficiently small and dense to sink to the level of the reticulo-omasal orifice. Large particles are retained in the raft of inescapable particles and are presented to the base of the oesophagus for rumination. Source: Based on descriptions by Seo et al. (2009).