This thesis explores the effects of dietary components, particularly fiber and biotics (prebiotics, probiotics, and synbiotics), on gastrointestinal health and immune function in dogs. Given the growing interest in pet health, especially within the expanding pet food industry, the research aims to address knowledge gaps regarding how these components impact canine gut microbiota and overall health.
Two separate trials were conducted with dogs, each designed to test different combinations of dietary fibers, prebiotics, probiotics, and nutraceuticals. The first trial evaluated cereal- and fruit-based fiber sources in complete extruded diets, while the second trial examined a synbiotic strategy (Bacillus velezensis DSM 15544, inulin, and fiber), with or without spray-dried plasma (SDP).
Both cereal- and fruit-based fiber diets improved gut health and fecal quality. However, cereal fibers increased bacterial diversity, whereas fruit-based fibers enhanced immune responses.
In the second trial, synbiotic treatments improved gut health and short-chain fatty acid levels, with minor differences in bacterial growth. Adding spray-dried plasma offered minimal additional benefits but did influence immune function.
Overall, the thesis highlights that fiber sources and biotics significantly impact gut health and immune function in dogs, though their effects vary depending on the specific dietary components used. The findings call for further research to optimize dietary interventions and better understand the interactions between these dietary components and canine gut microbiota.
Dietary Strategies for Gut Health Improvement in Dogs
Montserrat Malagarriga, M. (Author). 8 Nov 2024
Student thesis: Doctoral thesis
Student thesis: Doctoral thesis