1 the act of burning something; the burning of leaves was prohibited by a town ordinance. 2  a process in which a substance reacts with oxygen to give heat and light.  a state of violent disturbance and excitement; combustion grew until revolt was unavoidable.
It is not the cow that digests the feed but the bacteria in the rumen, which does the most of this work. The rumen contains billion bacteria and more specially, 1 mL of rumen fluid contains 10-50 billion microbes and over 1 million protozoa. These bacteria attach to the feed particles to digest the feed.UMEN (picture 1) : This is the first compartment of the cattleâs stomach and where fermentation occurs, which allows for the digestion of fiber and other feeds. This is the largest compartment of the stomach and can hold up to 50 gallons of digested feed.
Some carbon dioxide is used by the intestinal microbes and by the cow to maintain bicarbonate levels in saliva. Methane cannot be used by the cowâs body systems as a source of energy. 5.3 Digestion of protein Protein, when digested, is broken down into peptides, which are short chains of amino acids..2 Carbohydrate digestion in the rumen When food is eaten by the cow, the nutrients are initially in the form of carbohydrates, proteins and fats (or lipids). These are digested to products, which can be used directly by the cow or by the microbes in the rumen.Plant tissue dry matter is about 75% carbohydrate.