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- 저자 : 광전수헌(H . Hirota) (검색결과 2 건)
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호맥건초의 생육단계와 절단이 산양의 채식 및 반추행동에 미치는 영향
문상호 ( S H Moon ),전병태 ( B T Jeon ),광전수헌 ( H Hirota ) 한국축산학회 1995 한국축산학회지 Vol.37 No.2
To determine feeding behavior in relation to quality and physical form of feed, this experiment was cunducted by feeding trials to evaluate eating and rumination behavior in goats fed a rye hay in a unchopped or chopped form harvested at two stages of maturity. Rye hay dried at two different stages of growth for experimental rations was offered ad libitum in the unchopped or 2cm long chopped form to twelve goats. Although there were no significant differences (P$gt;0.05), eating time was longer in the chopped form than in the unchopped form at harvested both growth stages, but times for the different growth stages were hardly different. Rumination time was longer in the group fed unchopped hay harvested at the boot stage and in the group fed chopped hay harvested at the heading stage, however, the differences were not significant (P$gt;0.05). Resting time was in contrast to rumination time. Goats in all groups exhibited the similar behavioral patterns, showing longer periods of eating from 12:00 to 19:00 and the most vigorous rumination after 19:00. However, the periods of rumination in groups fed hay harvested at the heading stage were greater than in groups fed hay harvested at the boot stage. Unitary time of eating per 100g or 100KJ of ingested nutrients was longer in groups fed chopped hay than in groups fed unchopped hay harvested at both growth stages, but there were no significant differences (P$gt;0.05) except for crude protein (P$lt;0.05). Unitary time of rumination per 100g or 100KJ of ingested nutrient was all long in the group fed unchopped hay harvested at the boot stage (P$gt;0.05) but was little different at heading stage. Unitary rumination time was significantly longer (P$lt;0.05) in groups fed hay harvested at the heading stage than in groups fed hay harvested at the boot stage. Number of chews was more numerous in groups fed unchopped hay than in groups fed chopped hay harvested at both stages and that was also greater at the heading stage than at the booting stage, although there were no significant differences (P$gt;0.05). As time past, number of chews per bolus tended to decrease in groups fed hay harvested at the boot stage but tended to increase in groups fed hay harvested at the heading stage. The result of chewing time per bolus was similar to that of number of chews. Chewing speed obtained by dividing the number of chews by chewing time was faster in groups fed unchopped hay than in groups fed chopped hay during the whole period and was faster in groups fed hay harvested at the heading stage than in groups fed hay harvested at the boot stage. Chewing speed was also the fastest during the period of 11:00-17:00 and tended to decrease therefore in all groups. Consequently, it is considered that feeding behavior is largely influenced by quality, chopping and intake of roughage.
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