Portal de Periódicos da CAPES

Secretion of Gastric and Pancreatic Juice, pH of Tract, Digestion in Alimentary Canal, Liver and Bile, and Absorption

1976; Springer Nature; Linguagem: Inglês

10.1007/978-3-642-96274-5_10

0172-6226

Paul D. Sturkie,

Meat and Animal Product Quality

Gastric juice free from food may be obtained by starving the bird. Little is secreted under such conditions, unless some other stimulus is employed. Even under starvation conditions the juice, although free from food, may contain intestinal juice unless the proventricuius or the gizzard is cannulated. In order to study the stimulating effects of food ingestion on the rate of secretion and the composition of pure gastric juice, one of two methods may be used: (1) preparation of a fistula or opening of the esophagus, so that when food is ingested it does not pass to the stomach but drops out of the opening (sham feeding); or (2) preparation of a pouch of the stomach, with an intact nerve and blood supply, that opens to the outside through the body wall (Pavlov or Heidenhain pouch). Food entering the main stomach, but not the pouch, stimulates both stomachs, and pure juice is collected from the pouch.