Patterns of carbohydrate and protein digestion in the chicken as derived from sampling the hepatic portal system
| Autor: | Takanori Aramaki, Harold S. Weiss |
|---|---|
| Rok vydání: | 1962 |
| Předmět: |
medicine.medical_specialty
Physiology Protein digestion media_common.quotation_subject Carbohydrates Absorption (skin) Biology Carbohydrate metabolism Biochemistry Hepatic portal system Internal medicine medicine Animals Vein media_common Proteins Appetite Carbohydrate Gastrointestinal Tract Portal System medicine.anatomical_structure Endocrinology Liver Proteolysis Carbohydrate Metabolism Digestion Chickens |
| Zdroj: | Archives Internationales de Physiologie et de Biochimie. 70:1-15 |
| ISSN: | 0003-9799 |
| DOI: | 10.3109/13813456209092835 |
| Popis: | A technique for chronic catheterization of the hepatic portal system of the chicken via the duodenal vein is described. The system has been used to evaluate digestive processes in fasted, adult White Leghorn males by repeatedly measuring differences in glucose and amino-N between portal and wing vein blood (i. e., portal increments) following a test meal. The system was found to be sufficiently sensitive to follow carbohydrate and protein digestion, using as little as 13 g. of a practical poultry ration as a test meal.Digestion and absorption began rapidly, with near peak portal increments of both glucose and amino-N occurring approximately 15 minutes after a test meal. A consistent, positive portal increment of amino-N was observed after 16-18 hours of fasting, presumably from endogenous sources. Amino-N absorption appears to be completed sooner than glucose (by 2 hours) whereas signs of glucose absorption were seen for as long as 6 hours. Systemic levels of amino-N were elevated only during the ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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