Activities of gastric, pancreatic, and intestinal brush-border membrane enzymes during postnatal development of dogs.

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 tissue.

Dietary oligofructose and inulin protect mice from enteric and systemic pathogens and tumor inducers.

Prebiotics induce changes in the population and metabolic characteristics of the gastrointestinal bacteria, modulate enteric and systemic immune functions, and provide laboratory rodents with resistance to carcinogens that promote colorectal cancer. There is less known about protection from other challenges. Therefore, mice of the B6C3F1 strain were fed for 6 wk a control diet with 100 g/kg cellulose or one of two experimental diets with the cellulose replaced entirely by the nondigestible oligosaccharides (NDO) oligofructose and inulin.