Verdaulichkeit von Proteinquellen

Dieser Tage stolperte ich über einen Artikel von ScienceDog. Er behandelt die Frage, wie verdaulich bestimmte Proteinquellen sind.

Good vs. Poor Digestibility: The term digestibility coefficient refers to the percent of a food that the dog absorbs into his or her body during the process of digestion. As a rule of thumb, dry dog foods with digestibility values of 75 % or less will be of very poor quality, those with values between 75 and 82 % are classified as moderate in quality, and foods with digestibility values that are higher than 82 % are of high quality. If you see products with 88 % or more reported digestibility, you have a rock star. (For a more detailed explanation of dog food digestibility, see “Dog Food Logic“).

Verdaulichkeit wird gemessen an der relativen Menge (gemessen in Prozenten) die die Darmwand überwindet. Was hinten raus fällt an Energie, ist dann die Kotenergie. Was dann noch über die Niere ausgeschieden wird, ist die Harnenergie. Was nun übrig ist, nennt sich umsetzbare Energie.

Die Autorin zitiert Studien, in denen die Verdaulichkeit von Proteinen aus verschiedenen Quellen Gegenstand der Untersuchung war.

The good news is that two research studies measuring the digestibility of dog foods formulated with different types of protein sources were recently published by a group of animal nutritionists from the Norwegian University of Life Sciences and the University of Copenhagen in Denmark (1,2). The first compared the digestibility of dog foods that used three common animal protein meals and the second compared the use of fresh chicken meat (aka “chicken first”) with poultry meal as protein sources in a dry food.

Quelle der Proteine waren Lamm, Fisch, und Geflügel. Ergebnis der Untersuchgung war, dass mit über 80% die die Darmwand passieren, Fisch und Geflügel besser als Lamm waren, und Fisch einen kleinen Vorsprung gegenüber Geflügel hat.

When tested in adult dogs, the protein digestibility values of the three foods were 71.5, 80.2, and 87.0 for lamb meal, poultry meal and fish meal, respectively. Overall, this study suggests that, at least for the sources used in this work, the order of protein quality was lamb meal (poor), poultry meal (moderate), and fish meal (high). Additionally, although the reported level of lamb meal in the diet exceeded the minimum methionine requirement for adult dogs, the actual amount of methionine that was available to the dogs (i.e. was digested) was less than their minimum requirement for this nutrient.

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Fütterung von Hunden - Ein Artikel zur Fütterung von Hunden.
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