OBJECTIVE To measure activities of digestive enzymes during postnatal development in dogs. SAMPLE POPULATION Gastrointestinal tract tissues obtained from 110 Beagles ranging from neonatal to adult dogs. PROCEDURE Pepsin and lipase activities were measured in gastric contents, and amylase, lipase, trypsin, and chymotrypsin activities were measured in small intestinal contents and pancreatic ...

The digestive system is a way for nutrients from the outside environment to get to various parts of the body. At its simplest, the digestive system is a tube running from the mouth to the anus. This tube is similar to an assembly line, or more properly, a disassembly line. Its chief goal is to break down huge macromolecules (proteins,* fats, and starches) that cannot be absorbed as they are int...

More than 285 specimens of Conotheca subcurvata with three-dimensionally preserved digestive tracts were recovered from the Terreneuvian (early Cambrian) Heraultia Limestone of the northern Montagne Noire, southern France. They represent one of the oldest occurrences of such preserved guts. The newly discovered operculum of some complete specimens provides additional data allowing emendation of...

Artificial nutrition includes: enteral nutrition, and parenteral nutrition. Total parenteral nutrition aims at making up for nutritional deficiency caused by both insufficient oral nutrition due to anorexia and obstruction of the gastro-enteric tube or derived from a digestive inefficacy due to a deficiency in the digestive process of assimilation. Enteral nutrition is destined to elderly patie...

Histological development of digestive tract of the Caspian salmon, Salmo trutta caspius, from hatching to 6 month post-hatching was studied using light microscope. The digestive tract of newly hatched larvae was a simple, undifferentiated tube which continued from mouth to anus. In 10 days post hatching larvae, the alimentary canal became more differentiated and secretion was started activity, ...

Histological development of digestive tract of the Caspian salmon, Salmo trutta caspius, from hatching to 6 month post-hatching was studied using light microscope. The digestive tract of newly hatched larvae was a simple, undifferentiated tube which continued from mouth to anus. In 10 days post hatching larvae, the alimentary canal became more differentiated and secretion was started activity, ...

MR 2 variety mulberry leaves were sterilized with UV light for 5, 10 and 15 minutes. These leaves were fed to PM x NB 4 D 2 hybrid silkworm Bombyx mori Linn. life stages and recorded the macromolecular contents (total protein, reducing sugar and glycogen) and digestive enzymes (amylase, invertase and protease) activities. Results revealed feeding of silkworm B. mori with UV treated mulberry lea...

histological development of digestive tract of the persian sturgeon (acipenser persicus) from hatching to fingerling size was studied using light microscope. the digestive tract of newly hatched larvae was a simple tube which continued from mouth to anus. in 7 days post hatching, digestive tract became differentiated and secretion was started smoothly, with appearance of goblet cells in epithel...

This paper presents a standardized protocol for the non-lethal capture of fishes, sampling of stomach contents and quantification of seed dispersal efficiency by frugivorous fishes. Neotropical pacu Piaractus mesopotamicus individuals were collected with fruit-baited hooks. The diets of 110 fish were sampled using a lavage method, which retrieved >90% of stomach contents of both juveniles and a...