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Right arrow Forage Management

A Review of a Few Key Factors Regulating Voluntary Feed Intake in Ruminants1

Dwight S. Fisher*

USDA-ARS, 1420 Experiment Station Road, Watkinsville, GA, 30677-2373



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  		Fig. 1. A diagrammatic representation of the key aspects of the ruminant digestive system. The relative size of the parotid glands, rumen, distal fermentation chamber, and spiral colon are varied to fit a ruminant to a particular ecological niche.

 


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  		Fig. 2. Contrast of distension or fill feedback with chemostatic feedback in regulating intake. The ruminant central nervous system integrates multiple feedbacks to regulate feed intake.

 




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Copyright © 2002 by the Crop Science Society of America.