Everything about The Reticulorumen totally explained
The
reticulorumen represents the first chamber in the
alimentary canal of
ruminant animals. It is composed of the
rumen and
reticulum. The reticulum differs from the rumen with regard to the texture of its lining. The rumen wall is covered in small finger like projections called, which are flattened, approximately 0.5 cm in length and 0.3 cm wide in cattle. The reticulum is lined with ridges that form a
hexagonal honeycomb pattern. The ridges are approximately 0.1 - 0.2 mm wide and are raised 0.5 cm above the reticulum wall. The hexagons in the reticulum are approximately 2-5 cm wide in cattle. Despite the differences in the texture of the lining of the two parts of the reticulorumen, it represents one functional space.
Microbial fermentation degrades ingested
carbohydrates in the reticulorumen to the
volatile fatty acids acetate,
propionate and
butyrate, and
proteins to short
peptides,
amino acids and
ammonia. This fermentation is anaerobic and allows the microbes in the reticulorumen to derive the
energy and
amino nitrogen in order that they can reproduce. Ruminants absorb the volatile fatty acids across the reticulorumen wall and use them for energy, while the microbes eventually flow out of the rumen into the remainder of the alimentary canal, where they're eventually digested and absorbed. The reticulum, at approximately 5-20 litres, is considerably smaller in capacity than the rumen, which is approximately 100-200 litres in cattle. The
oesophageal groove, which links the
oesophagus and the
omasum is located in the reticulum.
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