There are no scientific studies to support this theory. A meal of “mix feeding“, i.e., made by mixing dry and moist foods, is composed of items with different moisture contents that however mix inside the stomach, generating an unambiguous response toward the resulting mix that will constitute the substrate to be digested.
Therefore, a healthy and functioning stomach guarantees an adequate production of gastric juices suitable for the management of the food as a whole. The passage to the intestine will then take care of assimilating and benefiting from the nutrients of the diet consisting of both foods.
Furthermore, PEPSIN and GASTRIC LIPASE act in the dog’s stomach which are important digestive enzymes, responsible for the correct digestion of protein foods and more, and which are both activated by low levels of gastric pH, resulting from the release of hydrochloric acid in variable concentrations. . Factors that influence this secretion are: the protein content of the diet, the volume of the meal and hormonal fluctuations. In this way, correct digestion and subsequent assimilation of all nutrients is guaranteed, regardless of the moisture content of the starting food.