Fistulation de l'estomac et contenus gastriques résiduels après ingestion d'un régime semi-purifié à base d'amidon de maïs chez le Porc

Cuber, J. C.; Laplace, J.P.; Villiers, P. A.

doi:10.1051/rnd:19800705

Cited by 17 publications

(24 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This was surprising because the high-fat content of the HEM in the present experiment might have been expected to reduce the rate of emptying of digesta. However, the explanation for the difference between the present results and those of Cuber et al (1980) may lie in the diet :water value used which was 1 : 2.5 in the present experiment but only 1 : 1 (w/v) in that of Cuber et al (1980). This is supported by Low et al (1985) who found that digesta emptying rose as water intake (varying between 1.75 and 3.25 times DM intake) increased, although DM emptying remained unaffected.…”

Section: Digestacontrasting

confidence: 55%

Effect of guar gum on gastric emptying of test meals of varying energy content in growing pigs

Rainbird¹

1986

Br J Nutr

View full text Add to dashboard Cite

1. Existing information on whether the action of guar gum in decreasing postprandial blood glucose concentrations is due, at least in part, to a reduced rate of gastric emptying is conflicting, possibly because three types of test meals have been used. In order to test whether the type of test meal used influences the action of guar gum, these three types of meal were compared, either without or with guar gum, in growing pigs. The meals were: a high-energy meal (HEM), a low-energy milky drink (LEMD) and a glucose drink (GD).2. Six pigs were prepared with a simple gastric cannula which allowed complete removal of the stomach contents just before or 0.5, 1, 2 or 4 h after feeding.3. The three types of test meal without guar gum gave rise to very different postprandial profiles of gastric pH and of digesta and dry matter (DM) emptying from the stomach. 4. Addition of guar gum' to the G D significantly raised gastric pH at 0.5 and 1 h after feeding but, when it was added to HEM, gastric pH was only significantly raised 4 h after feeding. No significant effect on gastric pH was seen when guar gum was added to LEMD.5. Although addition of guar gum to G D had no significant effect on the emptying of digesta from the stomach, when added to HEM the rate of emptying of digesta was significantly reduced I, 2 and 4 h after feeding. Addition of guar gum to LEMD only significantly increased the amount of digesta remaining in the stomach 2 h after feeding.6. There was no significant effect on the emptying of DM from the stomach when guar gum was added to either HEM or LEMD. However, addition of guar gum to G D significantly reduced the mean rate of emptying of DM 0.5 h after feeding.7. Addition of guar gum to either LEMD or G D had no significant effect on the DM concentration of the evacuated gastric digesta. However, addition of guar gum to HEM significantly lowered the DM concentration of the evacuated gastric digesta I , 2 and 4 h after feeding.8. It was concluded that differences in test meal composition and also in the methods used to measure gastric emptying could account for the discrepancies previously reported. The results suggest that although guar gum may reduce the rate of gastric emptying under some conditions, this is unlikely to be the only mechanism by which it acts.Although the beneficial effects of guar gum on glucose tolerance (in particular, by reducing postprandial blood glucose levels) in normal and diabetic man are well established, its detailed mode of action remains unclear. Jenkins et al. (1978) suggested that these effects might be the result of a reduced rate of gastric emptying but studies designed to investigate this hypothesis have given conflicting results. We have recently found that guar gum had little effect on the gastric emptying rate of dry matter (DM) (and thus of glucose) from high-energy meals in pigs prepared with a simple gastric cannula (Rainbird & Low, 1986). This contrasts with the reductions caused by guar gum in the gastric emptying rate of (1) a glucose solution given by oroga...

show abstract

Section: Digestacontrasting

confidence: 55%

Effect of guar gum on gastric emptying of test meals of varying energy content in growing pigs

Rainbird¹

1986

Br J Nutr

View full text Add to dashboard Cite

show abstract

“…After weighing and sampling, the remainder of the digesta were returned to the pig via the gastric cannula. The stomach was not rinsed out before feeding as in the study of Cuber et a/. (1980) because this might alter gastric function, e.g.…”

Section: Collection Of Gastric Digestamentioning

confidence: 99%

Effect of guar gum on gastric emptying in growing pigs

Rainbird¹,

Low²

1986

Br J Nutr

View full text Add to dashboard Cite

I . Simple gastric cannulas were surgically fitted to four pigs, initially of 30 kg live weight, to examine the effects of guar gum on gastric emptying.2. Four semi-purified high-fat diets based on starch, casein, soya-bean oil and tallow were given to each pig. They contained 0 (control), 20,40 or 60 g powdered guar gum/kg diet. The meals as fed contained 257 g dry matter (DM)/kg. 3.The contents of the stomach were evacuated, with rinsing, before feeding or 0.5, I , 2 or 4 h after feeding. 4. The mean pH of the digesta was unaffected by guar gum until 4 h after feeding when the value increased as the amount of guar gum in the diet rose.5. The only significant effects of guar gum on the emptying of digesta and its components (compared with the control diet) were to reduce the rate of emptying of (a) digesta 1 h after feeding (60 g/kg diet) and 4 h after feeding (40 and 60 g/kg diets), (b) dry matter and glucose 1 h after feeding (60 g/kg diet), (c) nitrogen 1 h after feeding (60 g/kg diet) and 4 h after feeding (40 and 60 g/kg diets).6. When expressed on a half-time (Tho) basis, the emptying of digesta and N (but not of DM and glucose) were significantly slower for diets containing 40 and 60 g guar gum/kg than for the control diet.7. The apparent viscosity of the gastric digesta ranged between 0.5 and 23.7% of the values for the diets as consumed.8. It was concluded that the effects of guar gum on gastric emptying of high-solid meals were small, and that this was unlikely to be an important aspect of the mechanism by which guar gum reduces postprandial blood glucose concentrations.

show abstract

“…However, this very interesting animal model is a separate issue, differences. Gastric emptying of dry matter was steadier and more marked during a 7 h postprandial period when using gastric fistulation, and starch emptying was probably underestimated when measured in duodenal contents [41]. The question then arose as to whether the rate of gastric emptying was limiting intestinal carbohydrate absorption or not, suggesting that the rate of hydrolysis of the starch emptied from the stomach might also be the limiting factor.…”

Section: Gastric Emptyingmentioning

confidence: 99%

Forty years of achievement in french research on digestive physiology in the pig

Laplace¹,

Aumaı̂tre²,

Rérat³

2001

Reprod. Nutr. Dev.

View full text Add to dashboard Cite

-The contribution of the research group set up by Rérat in the early 1960s in Jouy-en-Josas, and then expanded to Rennes, is summarised. As digestive processes are a major key to the nutritional status of monogastric animals, original methodologies based on advanced experimental surgery were developed in the pig to quantify the digestion and absorption yield, to know their factors of variation, and to understand their physiological and nutritional consequences. The group also extended its expertise to the control of food intake, the role of the nervous system and regulatory peptides, and several biomedical gut-related topics. pig / digestion / absorption / neurohumoral regulation / adaptationRésumé -Réalisations et succès de la recherche française : quarante ans de physiologie digestive chez le porc. Dès le début des années 60, un groupe de recherches a été constitué à l'initiative de A. Rérat à Jouy-en-Josas pour étudier divers aspects de la physiologie digestive chez le porc. Leur exploration a fourni des clés essentielles pour la maîtrise du statut nutritionnel chez cette espèce monogastrique, et un instrument d'amélioration de la production porcine. Ce groupe s'est élargi au fil des années et a même essaimé dans les années 80, notamment à Rennes. Il a apporté une contribution essentielle par le développement de méthodologies nouvelles généralement basées sur une chirurgie expérimentale très élaborée. Ces approches ont fourni de nombreux travaux originaux qui ont permis de décrire les processus de digestion (motricité, transit, sécrétions, hydrolyses enzymatiques

show abstract

Fistulation de l'estomac et contenus gastriques résiduels après ingestion d'un régime semi-purifié à base d'amidon de maïs chez le Porc

Abstract: Summary. Fistulation of the stomach and residual gastric contents after intake of a semipurified maize diet in the pig. Gastric

Cited by 17 publications

References 4 publications

Effect of guar gum on gastric emptying of test meals of varying energy content in growing pigs

Effect of guar gum on gastric emptying of test meals of varying energy content in growing pigs

Effect of guar gum on gastric emptying in growing pigs

Forty years of achievement in french research on digestive physiology in the pig

Contact Info

Product

Resources

About