Posted at 08 November 2018

In the pet food industry, it is widely known that moistest kibbles are more palatant for dogs. What is the reason? Which parameters are modified with kibble’s water content? 
This study compared palatability, textural parameters and volatile profiles of dog kibbles with different levels of moisture.

Results confirmed dog’s preference for kibbles with higher moisture. They demonstrated that water content significantly impacts textural properties and volatile profiles of kibbles. Water increased elasticity and probably porosity of the kibbles, leading to a higher release of volatiles, thus a better palatability. Water content, texture and palatability being highly correlated, additional researches combining sensorial, physico-chemical and textural analysis should be conducted to better understand volatiles release mechanisms and impact on palatability. Textural studies on kibble porosity and water location and behavior in the kibble would be particularly relevant.