Publication Date

1989

Description

Many workers have reported that the decline in digestibility of temperate grasses were steep after heading in 1st cut and lenient during the regrowth in 2nd and 3rd cuts. But in some grasses, heading is observed even in 2nd and 3rd cuts, and the late stages of regrowth were sometimes accompanied by high temperature which usually accelerate the decline in digesti­bility. So even in the regrowth, digestibility is one of the important factors to optimize cutting stage of grasses. Cutting stages in the regrowth of grasses have been discussed from the standpoint of dry matter production (Watanabe et al., 1984; Parsons and Penning, 1988) and nitrogen content (Watanabe et al., 1984). In the present paper, the changes of digestibility with regrowth were evaluated to optimize the cutting stages of four temperate grasses.

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Changes in Digestibility with Regrowth of some Temperate Grasses

Many workers have reported that the decline in digestibility of temperate grasses were steep after heading in 1st cut and lenient during the regrowth in 2nd and 3rd cuts. But in some grasses, heading is observed even in 2nd and 3rd cuts, and the late stages of regrowth were sometimes accompanied by high temperature which usually accelerate the decline in digesti­bility. So even in the regrowth, digestibility is one of the important factors to optimize cutting stage of grasses. Cutting stages in the regrowth of grasses have been discussed from the standpoint of dry matter production (Watanabe et al., 1984; Parsons and Penning, 1988) and nitrogen content (Watanabe et al., 1984). In the present paper, the changes of digestibility with regrowth were evaluated to optimize the cutting stages of four temperate grasses.