Articles
The fibrosity index of ruminant feed and diet
Published : 10 December 1990
Abstract
The fibrosity index (FI) of feed and diet is equal to the chewing time (intake and rumination) expressed per kg of dry matter (mn/kg DM). A decrease of the FI of a diet is associated with a lower ruminal motricity and salivary secretion, it is moreover related to a decreased milk fat content and an increase in the risk of digestive disorders. There is a large range of FI values for feeds (0 to 250 mn/kg DM). According to published information the FI concept can only be used as an indication, not as a precise feed unit.
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