Publication Date

1989

Description

Ingestibility is the quantity of a forage that can be eaten by a standard animal when it is fed ad libitum as the sole feed (INRA, 1978). The eating pattern of ruminants reflects the way in which intake is controlled. The animal eats a large meal when a new batch of forage is distributed ; meals thereafter are small until the next distribution (Dulphy & Faverdin, 1987). To make a closer study of forage ingestibility, it seemed interesting to record the daily pattern of intake and to analyse in detail the large meals, which are 60 to 90 % of the daily intake. The intake kinetics during main meals can be adjusted with a good accuracy to a monoexponential model (Faverdin, 1985; Baumont, 1988), which makes it possible to follow the rate of intake during the meal. We compared intake kinetics and eat­ing patterns in sheep and cows fed three types of hays.

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Influence of the Nature of Hay on its Ingestibility and the Kinetics of Intake During Large Meals in Sheep and Cows

Ingestibility is the quantity of a forage that can be eaten by a standard animal when it is fed ad libitum as the sole feed (INRA, 1978). The eating pattern of ruminants reflects the way in which intake is controlled. The animal eats a large meal when a new batch of forage is distributed ; meals thereafter are small until the next distribution (Dulphy & Faverdin, 1987). To make a closer study of forage ingestibility, it seemed interesting to record the daily pattern of intake and to analyse in detail the large meals, which are 60 to 90 % of the daily intake. The intake kinetics during main meals can be adjusted with a good accuracy to a monoexponential model (Faverdin, 1985; Baumont, 1988), which makes it possible to follow the rate of intake during the meal. We compared intake kinetics and eat­ing patterns in sheep and cows fed three types of hays.