Publication Date

1985

Location

Kyoto Japan

Description

A series of trials has been carried out over a ten-year period to determine the ad lib. intake and digestibility of clipped orchardgrass and alfalfa fed at several growth stages to wethers. Forage and feces were fractionated into cell wall (CW) and cell content (CC) with neutral detergent solution, moreover the digestibility and the digestible amount of CW, CC were determined. The changing amount of digestible dry matter (D DM) in grass and legume related to the amount of digestible CC and indigestible CW, whereas digestible CW was observed to have little relation.

orchardgrass varied little between the first cut in spring and the aftermath. But there was significant correlation between fecal CW excretion and voluntary dry matter intake (VI) of alfalfa. The true digestibility of CC in orchardgrass and alfalfa averaged 98, 96%, respectively, moreover the ratio of endogenous and bacterial excretion to VI were 14, 13%, respectively. Gross energy of digestible CW in orchardgrass and alfalfa were 4.55, 3.73kcal/ gDM and 4.51, 4.32kcaUgDM in digestible CC, respectively. These data are consistent with the theory that indigestible CW inhibits VI and voluntary digestible nutrient intake.

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Evaluation of Orchardgrass and Alfalfa for its Nutritive Value and Voluntary Intake by Neutral Detergent Analysis

Kyoto Japan

A series of trials has been carried out over a ten-year period to determine the ad lib. intake and digestibility of clipped orchardgrass and alfalfa fed at several growth stages to wethers. Forage and feces were fractionated into cell wall (CW) and cell content (CC) with neutral detergent solution, moreover the digestibility and the digestible amount of CW, CC were determined. The changing amount of digestible dry matter (D DM) in grass and legume related to the amount of digestible CC and indigestible CW, whereas digestible CW was observed to have little relation.

orchardgrass varied little between the first cut in spring and the aftermath. But there was significant correlation between fecal CW excretion and voluntary dry matter intake (VI) of alfalfa. The true digestibility of CC in orchardgrass and alfalfa averaged 98, 96%, respectively, moreover the ratio of endogenous and bacterial excretion to VI were 14, 13%, respectively. Gross energy of digestible CW in orchardgrass and alfalfa were 4.55, 3.73kcal/ gDM and 4.51, 4.32kcaUgDM in digestible CC, respectively. These data are consistent with the theory that indigestible CW inhibits VI and voluntary digestible nutrient intake.