The intrinsic electrical activity of the ruminant stomach

Ruckebusch, Y.; Tsiamitas, C.; Buéno, Lionel

doi:10.1016/0024-3205(72)90163-4

Cited by 13 publications

(9 citation statements)

References 4 publications

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“…69 • Major contractions recur at about 12 s intervals, brief periods of quiescence dividing the contractions into groups of about six. This is dissimilar to the single backward and forward moving contraction seen at minute intervals in the reticulo-rumen of the Ruminantia, but it has a curious resemblance to the contractions seen in the vagotomized sheep 64.…”

Section: Stornach Motilitycontrasting

confidence: 59%

The digestive physiology of wild ruminants

Kay¹,

Engelhardt²,

White³

1980

Digestive Physiology and Metabolism in Ruminants

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Section: Stornach Motilitycontrasting

confidence: 59%

The digestive physiology of wild ruminants

Kay¹,

Engelhardt²,

White³

1980

Digestive Physiology and Metabolism in Ruminants

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“…35). Furthermore, ontogenetic devel-opment of the motor function in ruminants shows a very early pattern of nonpropagated cyclical motor events during prenatal life that resembles the pattern of MMCs only a few days before birth (199). This coincides with an increased retention of amniotic fluid in the gut lumen and is recorded as an increase by 20% of the slow-wave frequency and by 40% of associated spike potentials in the fetal lamb (191).…”

Section: Periodic Activitymentioning

confidence: 92%

Gastrointestinal motor functions in ruminants

Ruckebusch

1989

Comprehensive Physiology

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“…It is relevant to consider here the importance of local reflexes involving the myenteric plexus and the musculature of the ventral blind sac in relation to the resumption of purely local muscular activity after dorsal trunk vagotomy and its increase by gaseous distension (Ruckebusch et al 1972). More relevant perhaps is the fact that in their detailed investigation of vagal gastric efferent discharge patterns, Iggo & Leek (1967) described seven main types but found none specifically associated with the ventral blind sac.…”

Section: Secondary Contractions Of the Rumenmentioning

confidence: 99%

The sequential contractions of the rumen associated with eructation in sheep

Ruckebusch¹,

Томов²

1973

The Journal of Physiology

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SUMMARY1. The orderly sequential movements of the reticulum and the rumen were studied in conscious sheep by electromyography using enamelled stainless-steel wires implanted in various regions of the stomach wall and by recording mechanical changes within the various parts of the organ. Electrical activity of the rumen and/or pressure changes were related to eructation when the animals were at rest, feeding or ruminating.2. Secondary contractions of the rumen were found to originate in the ventral blind sac immediately following a primary contraction or independently. The wave of contraction originating in the ventral blind sac was seen to pass in a circular manner to the dorsal blind sac, the dorsal sac, the ventral sac and finally once more to the ventral blind sac. Eructation occurs at the end of the contraction of the dorsal sac. In each case, the time required to initiate the secondary cycle depended on the strength of contraction of the ventral blind sac.3. Sustained gaseous distension elicited numerous secondary contractions of the rumen concurrent with a lower frequency of reticular contractions. Although some secondary contractions were incomplete, all began with contraction of the ventral blind sac and were associated with eructation.4. Chemical stimulation of the rumen by fatty acids at pH 55-5-9 increased the ratio of secondary to primary contractions of the rumen to a varying extent depending on their initial rate.5. It was concluded that the seemingly random occurrence of a secondary cycle of the rumen was dependent on the activity of the ventral blind sac and its pattern could be altered by both mechanical and chemical stimulation.

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The intrinsic electrical activity of the ruminant stomach

Cited by 13 publications

References 4 publications

The digestive physiology of wild ruminants

The digestive physiology of wild ruminants

Gastrointestinal motor functions in ruminants

The sequential contractions of the rumen associated with eructation in sheep

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