Die Verdauung bei der Hausgans, untersucht mit der Methode der Dauerkanüle

Groebbels, Franz

doi:10.1007/bf01771412

Cited by 7 publications

(3 citation statements)

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“…Kato (1914), however, believed that gastric contraction amplitude was greater during fasting than after eating. Gastric secretion is also greater after eating than during fasting in birds (Groebbels, 1930;Fedorovskij and Konopleva, 1959).…”

Section: Discussionmentioning

confidence: 96%

Diurnal Cycles of Gastric Motility in Normal and Fasted Turkeys

Duke

Evanson

1976

Poultry Science

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Strain gage transducers were chronically implanted on the muscular stomachs of 12 young turkeys to study diurnal patterns of gastric motility. Continuous recordings were made for several days before and after a period of two or three days of fasting. Pronounced diurnal cycles in gastric motility were observed in which the frequency and amplitude of gastric contractions were increased during the daylight and depressed during darkness. Fasting caused a reduction in both frequency and amplitude and, during fasting, the diurnal cycles were somewhat obscured. Motility improved upon refeeding and cycles were agina apparent. The diurnal cycles appeared to be at least partially regulated by an intrinsic biological rhythm.

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Section: Discussionmentioning

confidence: 96%

Diurnal Cycles of Gastric Motility in Normal and Fasted Turkeys

Duke

Evanson

1976

Poultry Science

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“…Emotional or psychosomatic effects are not easily demonstrated in animals, although several examples in man are discussed by Davenport (1966). T h e passage of food through the alimentary tract of geese takes longer after forced feeding than after voluntary feeding (Groebbels, 1930). This result could help to explain some of the unsatisfactory attempts to infect hosts with helminths in the laboratory.…”

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confidence: 96%

“…The influence of the diet on digestion is illustrated by observations on geese (Groebbels, 1930). Corn remained longer in the tract than potato, which remained longer than bread, and dry food stimulated more secretion than moist food.…”

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confidence: 99%

The Sites Occupied by Some Parasitic Helminths in the Alimentary Tract of Vertebrates

Crompton

1973

Biological Reviews

134

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Summary 1. The sites occupied by adult helminths in the alimentary tracts of vertebrates, the events leading to the establishment of the helminths in these sites and some of the factors involved in extensions or changes of site have been described and discussed in an attempt to summarize the present state of knowledge and stimulate more research into the ecology of helminths in the tract. 2. In an attempt to reduce confusion and ambiguity in the future literature on the ecology of helminths, definitions have been proposed for the terms site, emigration and migration. 3. Since it has been assumed that the distribution and survival of some species of helminth in the tract are related to phases of digestive activity or inactivity, the morphology, histology and physiology of the alimentary tract of vertebrates have been considered with emphasis on events and features which appear to be of significance to helminths. 4. Many phases of a helminth's association with its host appear to be related to the host's intestinal motility. 5. Digestion in vertebrates is considered to be an ordered sequence of events producing different conditions in different parts of the tract. These conditions, however, are not entirely predictable; digestion is affected by the nature of the diet, the feeding routine and the psychosomatic state of the animal in question. 6. An accurate description of a helminth's site is fundamental to our understanding of its ecology. The description should include information about (I) the helminth's linear distribution, (2) the helminth's radial distribution, (3) the length of time which passed between the death of the host and finding the parasites, (4) the time of day when the search was made, (5) the stage of digestion in progress on the death of the host, (6) the season of the year when the parasites were observed, (7) the parasite's reproductive state and (8) the worm burden and the other species of parasite present in the host's alimentary tract. 7. Special care must be taken when describing the site of a cestode because of the nature of the strobila and the degrees of independent existence shown by the proglot‐tids of certain species. 8. The distribution of sites occupied by the adults of 252 species of helminth in the alimentary tract of vertebrates is given in Tables 2–6, and some sites are illustrated diagrammatically in Figs. 36–57. The sites given in the tables should be accepted with caution, for not all the authors recognized the need for information of the type proposed in paragraph 6 above. 9. The adult stages of most species of Acanthocephala and of most species of Cestoda are confined to the lumen and paramucosal lumen of the small intestines of their hosts. Their mode of feeding and dependence on their hosts' digestive processes fit in with their observed distribution. Acanthocephalans and cestodes are likely to be competitors because their restriction to the small intestine and their feeding behaviour suggest that they may have similar ecological niches. 10. The adult stages of Nematoda ca...

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Gastric secretion in birds

Friedman

1939

J. Cell. Comp. Physiol.

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Die Verdauung bei der Hausgans, untersucht mit der Methode der Dauerkanüle

Abstract: Bevor ich auf meine Befunde n~her eingehe, seien hier zunaehst /Methodik und Versuchsanordnung kurz besehrieben 5.

Cited by 7 publications

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Diurnal Cycles of Gastric Motility in Normal and Fasted Turkeys

Diurnal Cycles of Gastric Motility in Normal and Fasted Turkeys

The Sites Occupied by Some Parasitic Helminths in the Alimentary Tract of Vertebrates

Gastric secretion in birds

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