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Individual Differences of the Chewing Speed and Chews per Bolus in Rumination Behaviour of Cattle
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소의 반추행동에 있어서 저작속도와 괴움질 식괴당 저작횟수의 개체차

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Type
Academic journal
Author
Minoru Otha (건국대학교 자연과학대학)
Journal
THE KOREAN SOCIETY OF GRASSLSND SCIENCE 한국초지조사료학회지 한국초지조사료학회지 제9권 제3호 KCI Accredited Journals
Published
1989.1
Pages
158 - 162 (5page)

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Individual Differences of the Chewing Speed and Chews per Bolus in Rumination Behaviour of Cattle
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This experiment was conducted to evaluate individual difference of chewing speed and chews per bolus duing the rumination using twenty three heads of grazing cattle and thirty six heads of barn feeding cattle. Rumination behaviour was measured and recorded by the masster EMC telemeter and visual observation. The chewing speed (chews/lOOsec) was significantly different individually (C.V. 13.0-14.5 %) among the variable aged group (1-60 months), but that of same aged group showed lower difference (C.V. 4.5 %). The chews per bolus showed even larger individually difference than the chewing speed, so the variable aged group (1-60 months) resulted the 15.5-16.2 %of C.V.and the same aged group showed the 9.5 % of C.V. Under 12 month aged cattle showed more rapid chewing speed than older aged cattle. The chewing speed changed with the growth of cattle, but the chews per bolus did not show any relationship with age, so it is regarded as the individually characteristic pattern.

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