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Conditions Influencing Forage Acceptability and Rate of Intake¹

Georgia Agricultural Experiment Station, Experiment

ABSTRACT

Total intake of forage is the beginning point in forage evaluation, since it represents the initial quantitative measure of available feed. In attempting to describe this area of interest, certain terms have been used to describe broad areas of influence—the most frequently used terms being palatability, satiation, bulk, and dry matter consumption. The primary problem in determining the individual effects of these factors on forage intake is the inability to assign numerical values to nonspecific or indefinable terms. In a general way, we can define the desired level of intake as that which is sufficient to sustain the desired level of animal production. We can also describe the general problem by pointing out that the animal has a predetermined capacity for forage and that any factor which slows the rate of movement of material through the digestive tract, or results in less than maximum use of this capacity, is reflected in a lowered intake of forage.

¹ Georgia Experiment Station Journal Series, N.S. 337. Presented at the joint meeting of the American Grassland Council and the American Dairy Science Association at North Carolina State College, Raleigh, June, 1958.