As pet owners become increasingly aware of “ultra-processed” foods in their own diets, similar questions are naturally migrating to the veterinary consult room. A detailed report from ProDog Raw, titled “Taking a closer look at Dry Dog Food: What’s actually in Kibble?,” dissects the extrusion process and questions the biological appropriateness of standard commercial diets. Understanding these manufacturing mechanics is vital for addressing modern client concerns.
To assist in your discussions with clients regarding diet choices, we’ve summarized the 5 key takeaways from their analysis.
The Extrusion Process: The article highlights that most kibble undergoes “extrusion,” a high-heat, high-pressure cooking method. This process is necessary to create the familiar biscuit shape, but the report argues that the extreme temperatures can denature proteins and destroy heat-sensitive vitamins. This often necessitates the addition of synthetic nutrients later in the process to meet AAFCO standards, raising questions about bioavailability compared to whole foods.
Carbohydrate Load: To make kibble hold its shape during extrusion, a significant amount of starch is required. The article notes that many dry foods contain high levels of carbohydrates (often from grains, legumes, or potatoes), which may not be biologically optimal for facultative carnivores. For patients struggling with weight management or metabolic issues, the glycemic impact of this starch load is a critical consideration.
Protein Quality & Sources: A major point of contention raised is the source of protein. The report differentiates between fresh meat and “meat meals” (rendered products). It suggests that while meat meal is a concentrated protein source, the multiple rounds of high-heat processing (rendering plus extrusion) may affect the digestibility and nutritional integrity of the amino acids compared to less processed protein sources.
Moisture Content: Dry dog food typically contains very low moisture (around 10%) compared to a natural diet or wet food (70-80%). The article argues that feeding a strictly dry diet can put a dog in a state of chronic mild dehydration, potentially placing low-grade stress on the renal system over time. This aligns with standard veterinary advice to increase moisture intake for feline patients, suggesting dogs may benefit similarly.
Synthetic Additives: Because the manufacturing process depletes natural nutrients, kibble relies heavily on “vitamin packs”—synthetic vitamins and minerals sprayed onto the food after cooking. The article questions whether these synthetic isolates offer the same health benefits as the synergistic nutrients found in whole, fresh ingredients, suggesting that “surviving” on a diet is not the same as “thriving” on one.
Read the Full Guide: For the complete breakdown of ingredients and manufacturing processes described in the article, you can read the original post here:
Disclaimer: This article is a summary of nutritional arguments regarding pet food processing. It is for educational purposes and practice support. Veterinary professionals should evaluate all diets based on the specific medical needs of the individual patient.