Herbage production and utilization, and milk production per unit area under set stocking and rotational grazing by lactating dairy cows
2004
Kurata, M. | Endo, T. | Takahashi, M. | Ueda, K. | Nakatsuji, H. | Kondo, S. | Mitani, T.
The effect of set stocking (S) and rotational grazing (R) by lactating dairy cows on herbage production and utilization, and milk production from pasture were determined under time-restricted grazing (5 hours/day) and the same stocking rate (6 cows/ha). Annual mean grass height (cm) was lower in S than R (9.7 vs. 12.6). However, mean herbage mass (Tdm/ha) throughout the grazing period was similar to both groups 0.6) since annual mean tiller density (No./ m2) in S was higher than in R (6,662 vs. 5,214). Because daily regrowth rate of herbage mass in S was higher than in R, total amount of herbage production (tDM/ha) including herbage growth before grazing was higher in S than R 02.1 vs. 10.3). Annual herbage utilization (tDM/ha) and milk production from pasture (t/ha) were higher in S than R (herbage, 11.2 vs. 7.0; milk, 9.1 vs. 6.7).
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