Arterial blood flow to the ruminant stomach
| Autor: | CE Stevens, A. F. Sellers, F. D. McLeod, A. Dobson |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
Rumen
Nutritional Sciences Ruminant stomach Nutritional Status Physiology Acetates Biology Heart Rate Physiology (medical) Heart rate medicine Animals Nutritional Physiological Phenomena Research Stomach Ruminant Arterial blood flow Arteries Anatomy Carbon Dioxide Butyrates Blood medicine.anatomical_structure Blood circulation Blood Circulation Cattle Propionates Gastrointestinal Motility Blood Flow Velocity Artery |
| Zdroj: | American Journal of Physiology-Legacy Content. 207:371-377 |
| ISSN: | 0002-9513 |
| DOI: | 10.1152/ajplegacy.1964.207.2.371 |
| Popis: | In seven of eight adult bovine females, increase in right ruminal or omasal artery flow was seen upon feeding. This increase continued beyond the act of feeding and was independent of weight-volume and motility change. Blood flow recorded from posterior mesenteric or hypogastric arteries did not show increase on feeding. Feeding under conditions where rumen fermentation was minimal limited the increase in ruminal blood flow to the period when the animal was eating. The passive transfer of feed into the rumen under these circumstances gave no blood flow stimulation. In five adult animals, an increase in CO2 tension within the reticulorumen increased blood flow. Acetate, propionate, and butyrate also stimulated blood flow. Concentration increments of the three organic acids showed increase in amount absorbed per unit time, but no regular relation to blood flow. A method of studying confined volumes is described. |
| Databáze: | OpenAIRE |
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