Heat treatment of bovine milk influences gastric emptying of lactose but not its apparent small intestinal disappearance in the growing pig as a model for the adult human.

Background: Heat treatment influences gastric emptying of proteins and lipids in bovine milk. Whether heat treatment influences lactose gastric emptying and small intestinal lactose disappearance remains unknown.

Objective: This study aimed to determine the gastric emptying of lactose and its disappearance from the small intestine of the growing pig as a model for the adult human.

Heat Treatment and Homogenization Influence the Gastric Digestion of Bovine Milk Protein in Growing Pigs as an Adult Human Model.

Background: Bovine milk processing influences the structure of the curd formed during gastric digestion, which may alter gastric protein hydrolysis and impact amino acid (AA) release into the small intestine.

Objectives: This study aimed to determine the influence of heat treatment and homogenization on the gastric protein digestion and AA emptying of bovine milk.

Methods: Nine-wk-old pigs (n = 144) consumed either raw, pasteurized nonhomogenized (PNH), pasteurized homogenized (PH), or ultra-high-temperature homogenized (UHT) bovine milk for 10 d.

Differences in small intestinal apparent amino acid digestibility of raw bovine, caprine, and ovine milk are explained by gastric amino acid retention in piglets as an infant model.

Background: The rate of stomach emptying of milk from different ruminant species differs, suggesting that the small intestinal digestibility of nutrients could also differ across these milk types.

Objective: To determine the small intestinal amino acid (AA) digestibility of raw bovine, caprine, and ovine milk in the piglet as an animal model for the infant.

Methods: Seven-day-old piglets ( = 12) consumed either bovine, caprine, or ovine milk diets for 15 days ( = 4 piglets/milk).