The impact of protein source and grain inclusion on digestibility, fecal metabolites, and fecal microbiome in adult canines

Abstract This study was conducted to determine the effect of animal protein inclusion rate and grain-free or grain-inclusive diets on macronutrient digestibility, fecal characteristics, metabolites, and microbiota in mixed-breed hounds and Beagles. Four experimental extruded kibble diets were made w...

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Bibliographic Details
Published in:Journal of animal science 2023-01, Vol.101
Main Authors: Clark, Stephanie D, Hsu, Clare, McCauley, Sydney R, de Godoy, Maria R C, He, Fei, Streeter, Renee M, Taylor, Emily G, Quest, Bradley W
Format: Article
Language:English
Subjects:
Ammonia
Ammonia - analysis
Animal Feed - analysis
Animal protein
Animals
Carbohydrates
Chemical composition
Cholic acid
Companion Animal Nutrition
Diet
Diet - veterinary
Diet, Protein-Restricted - veterinary
Digestibility
Digestion
Dogs
Fatty Acids, Volatile - analysis
Fecal microflora
Feces
Feces - chemistry
Food sources
Grain
Metabolites
Microbiomes
Microbiota
Microorganisms
Phenols
Plant Breeding
Proteins
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Summary:Abstract This study was conducted to determine the effect of animal protein inclusion rate and grain-free or grain-inclusive diets on macronutrient digestibility, fecal characteristics, metabolites, and microbiota in mixed-breed hounds and Beagles. Four experimental extruded kibble diets were made with varying amounts of animal protein and carbohydrates: 1) high animal protein, grain-inclusive (HA-GI), 2) low animal protein, grain-free (LA-GF), 3) low animal protein, grain-inclusive (LA-GI), and 4) high animal protein, grain-free (HA-GF). Thirty-two Beagles and 33 mixed-breed hounds were assigned to 1 of the 4 treatment groups in a completely randomized design that lasted 180 d. All diets were similar in chemical composition and well-digested by the animals. In general, for fecal metabolites, mixed-breed hounds had a greater concentration of total short-chain fatty acid (SCFA) and ammonia and lower indole concentration than Beagles (P 
ISSN:0021-8812
1525-3163
1525-3163
DOI:10.1093/jas/skad268