アオガリ トウモロコシ サイレージ キュウヨジ ニオケル メンヨウ ノ サイショク ハンスウ コウドウ ニツイテ
The Eating and Rumination Behaviour in Sheep Fed only Corn Silage
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The eating and rumination behaviour was investigated in sheep fed only corn silage diet (A, B or C) which was made in different year and the following results were obtained.
1) The time spent eating silage B was fairly long, but not significantly, as compared with that in silages A and C, and consequently, the eating rate with silage B was markedly slower than those with silages A and C. The rumination appearance (lag time after feeding) was fairly shorter with silage C than with silages A and B, but not significantly because there was a quite large variation between individuals.
2) Daily time spent ruminating tended to be longer after feeding silage C than after feeding of silage A or B. The daily number of rumination periods was slightly more with silage C than with silages A and B, and cyclic rate was clearly longer with silage C than with silages A and B.
3) In rumination efficiency, rumination index (time spent ruminating/100g D. M. eaten) was significantly high in silage A feeding as compared with those in feedings of silages B and C. Bolus time was clearly longer with silage C than those with silages A and B. The rumination chewing rate was significantly higher in feeding of silage A than in feedings of silages B and C. These findings obviously suggest that the quality of silages clearly influence the rumination behaviour, especially on rumination index and chewing rate during rumination.
Bulletin of the Faculty of Agriculture, Shimane University
Shimane University, Faculty of Agriculture
Departmental Bulletin Paper