what is function of rumen in herbivores and pancrseas in the process of digestion
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FUNCTION OF RUMEN IN HERBIVORES
The rumen is one of four stomach compartments found in ruminants. Ruminants are animals such as cattle, sheep, goats and deer. (In comparison, animals such as pigs, dogs and horses have only a single stomach compartment and are called nonruminants, ormonogastric animals.) The rumen allows grazing animals to digest cellulose, a very common carbohydrate in plants.
PROCESS OF DIGESTION
Ruminant digestion begins when a cow swallows a mouthful of plants. The food is partially chewed and mixed into a bolus with saliva, before being swallowed and passing down the oesophagus into the rumen. When ruminants are grazing they tend to swallow their food quickly, with only minimal mastication. When the animal is resting after grazing, it regurgitates this partially chewed food, rechews it, and then swallows it again (This process is know as “chewing the cud”, or rumination.) Depending on the amount of fibre in their food, cattle may spend between 3 – 6 hours per day chewing their cud (Lofgreen et al 1957).
The rumen is one of four stomach compartments found in ruminants. Ruminants are animals such as cattle, sheep, goats and deer. (In comparison, animals such as pigs, dogs and horses have only a single stomach compartment and are called nonruminants, ormonogastric animals.) The rumen allows grazing animals to digest cellulose, a very common carbohydrate in plants.
PROCESS OF DIGESTION
Ruminant digestion begins when a cow swallows a mouthful of plants. The food is partially chewed and mixed into a bolus with saliva, before being swallowed and passing down the oesophagus into the rumen. When ruminants are grazing they tend to swallow their food quickly, with only minimal mastication. When the animal is resting after grazing, it regurgitates this partially chewed food, rechews it, and then swallows it again (This process is know as “chewing the cud”, or rumination.) Depending on the amount of fibre in their food, cattle may spend between 3 – 6 hours per day chewing their cud (Lofgreen et al 1957).
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