Comparison of cassava fiber with conventional fiber sources on diet digestibility, fecal characteristics, intestinal fermentation products, and fecal microbiota of dogs

Souza, Camilla Mariane Menezes; Bastos, Taís Silvino; Kaelle, Gislaine Cristina Bill; Bortolo, Marcelino; Vasconcellos, Ricardo Souza; Oliveira, Simone Gisele de; Félix, Ananda Portella

doi:10.1016/j.anifeedsci.2021.115092

Cited by 7 publications

(14 citation statements)

References 42 publications

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“…The CTTAD of the TDF, IF and SF were the only digestibility results that differ, being higher in the CA than in the CO diet. Similar results were described by Souza et al (2021) in dogs, demonstrating that both a coarser and a finer CA are fermentable in the gut.…”

Section: Discussionsupporting

confidence: 90%

“…Curiously, our study did not find differences in the CTTAD of most of the nutritional fractions between the diets. A previous study in dogs found a reduction in the digestibility of DM, OM and CP and in the ME of the diet with the inclusion of 12% CA (Souza et al, 2021). Considering that the TDF of the diet in the study of Souza et al (2021) was similar to that of the present study (8.3% and 8.4%, respectively), the different particle sizes of the CA evaluated in the studies (125 and 106 µm, respectively) can be one of the factors that explains those divergent results.…”

Section: Discussionmentioning

confidence: 92%

“…A previous study in dogs found a reduction in the digestibility of DM, OM and CP and in the ME of the diet with the inclusion of 12% CA (Souza et al, 2021). Considering that the TDF of the diet in the study of Souza et al (2021) was similar to that of the present study (8.3% and 8.4%, respectively), the different particle sizes of the CA evaluated in the studies (125 and 106 µm, respectively) can be one of the factors that explains those divergent results. Thus, our results indicate that the dietary inclusion of 9.6% CA with fine particle size (106 µm) does not affect the apparent digestibility of the main dietary nutritional fractions.…”

Section: Discussionmentioning

confidence: 92%

“…Cassava fibre (CA) is a byproduct of the extraction of starch from cassava roots, obtained by drying and grinding the cassava cortex. It presents an average concentration of 41% total dietary fibre (TDF), 38% of insoluble fibre (IF) and 2.9% of soluble fibre (SF) and can be a new fibre source to pet food formulation (Souza et al, 2021, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Although studies already have demonstrated the physiological effects of fibre sources, such as beet pulp, cellulose, soy hulls and fruit pomaces on the gastrointestinal functionality of dogs (de Brito et al, 2021; Donadelli & Aldrich, 2019; Donadelli et al, 2021; Pacheco et al, 2021; Panasevich et al, 2015; Sabchuk et al, 2017; Souza et al, 2021; Volpe et al, 2021), only one study (Souza et al, 2021) evaluated the effects of CA in this species. The study of Souza et al (2021) demonstrated that CA is fermentable in the gut, altering the production of fermentative metabolites and changing the gut microbiota of dogs. However, this study used a dietary inclusion of 12% of a coarser CA (125 µm), which had 35% TDF.…”

Section: Introductionmentioning

confidence: 99%

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Fine cassava fibre utilization as a dietary fibre source for dogs: Effects on kibble characteristics, diet digestibility and palatability, faecal metabolites and microbiota

Souza

Bastos

Kaelle

et al. 2023

Animal Physiology Nutrition

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The objective was to evaluate through three experiments the effects of a fine cassava fibre (CA: 106 μm) on kibble characteristics, coefficients of total tract apparent digestibility (CTTAD) of macronutrients, diet palatability and faecal metabolites and microbiota of dogs. Dietary treatments consisted of a control diet (CO), without an added fibre source and with 4.3% total dietary fibre (TDF), and a diet with 9.6% CA (106 μm), with 8.4% TDF. Experiment I evaluated the physical characteristics of the kibbles. The palatability test was evaluated in experiment II, which compared the diets CO versus CA. In experiment III, 12 adult dogs were randomly assigned to one of the two dietary treatments for 15 days, totalling six replicates/treatment, to assess the CTTAD of macronutrients; faecal characteristics, faecal metabolites and microbiota. The expansion index, kibble size and friability of diets with CA were higher than the CO (p < 0.05). Additionally, the CA diet presented higher palatability than the CO (p < 0.05) but did not affect CTTAD except for those of fibre (p > 0.05). Moreover, a greater faecal concentration of acetate, butyrate and total short-chain fatty acids (SCFA) and a lower faecal concentration of phenol, indole and isobutyrate were observed in dogs fed the CA diet (p < 0.05). Dogs fed with the CA diet presented a greater bacterial diversity and richness and a greater abundance of genera considered to be beneficial for gut health, such as Blautia, Faecalibacterium and Fusobacterium when compared to the CO group (p < 0.05). The inclusion of 9.6% of a fine CA improves the expansion of kibbles and diet palatability without affecting most of the CTTAD of nutrients. Besides, it improves the production of some SCFA and modulates the faecal microbiota of dogs.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 92%