Effects of different protein sources on fermentation metabolites and nutrient digestibility of brachycephalic dogs

Urrego, Maria Isabel Gonzalez; Matheus, Laura Fantucci de Oliveira; Santos, Karine de Melo; Ernandes, Mariane Ceschin; Monti, Mariana; Souza, Danilo Ferreira de; Balieiro, J. C. C.; Araujo, Lúcio Francelino; Pontieri, Cristiana Fonseca Ferreira; Brunetto, Márcio Antônio

doi:10.1017/jns.2017.46

Cited by 10 publications

(9 citation statements)

References 16 publications

(17 reference statements)

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“…In the current study, the nitrogen-free extract content for poultry meal, wheat gluten and rice protein (as raw ingredients) was not identical (10.0, 65.0 and 85.0 g/kg as fresh basis, respectively). In contrast to our data, Urrego et al [ 46 ] found that nitrogen-free extract apparent digestibility was similar for dogs offered poultry meal or wheat gluten-based diets (91.7% and 92.1%, respectively).…”

Section: Discussioncontrasting

confidence: 99%

Nitrogen output in the urban environment using a vegetarian canine diet

et al. 2021

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Pet owners are increasingly concerned about the links between health status, animal welfare, environmental impacts, climate change and consumption of animal products. Accordingly, many owners are increasingly interested in vegetarian diets for themselves and their companion animals. However, such diets should be investigated nutritionally regards digestibility as well as on fecal quality and nitrogen output. In light of this trend, six Beagle dogs were included in a cross-over experimental design and offered a vegetarian diet containing wheat gluten (8.81%), rice protein (8.81%) and sunflower oil (6.84%) or an meat-based diet containing poultry meal (19.5%) and poultry fat (5.23%). The dogs received extruded complete diets for 12 days (adaptation and collection period, each 6 days). The dogs fed both diets showed a high and identical palatability (scoring of food intake) of the experimental diets. No significant differences occurred regarding digestibility of organic matter, crude protein and crude fat between vegetarian and meat-based diets. However, dogs fed the meat-based diet had higher (p < 0.05) nitrogen-free extract digestibility (89.5%) compared to those fed the vegetarian diet (88.6%). The amount of nitrogen excreted in feces (g)/kg BW0.75 was slightly, but not significantly, higher for dogs fed the vegetarian diet compared to those fed the meat-based diet (0.88 vs 0.79). The fecal consistency scores were considered to be within an acceptable range (well formed and firm). The mass of the feces between both groups were similar (62.9 g wet feces/100 g dry matter food) for vegetarian and meat-based diets. Additionally, the fecal dry matter content was comparable between both groups (29.0% and 29.6% for vegetarian and meat-based diets, respectively). In conclusion, the results of this study appear to indicate that virtually the only significant difference between the two diets was lower nitrogen-free extract digestibility in the vegetarian diet. However, the vegetarian diet did not result in a significant difference in amount of nitrogen excreted in feces.

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Section: Discussioncontrasting

confidence: 99%

Nitrogen output in the urban environment using a vegetarian canine diet

et al. 2021

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“…This may provide some explanation for their much smaller concentrations compared to SCFA (Table 4). In general, their concentration has been reported to be about 5% to 10% of SCFA (Middelbos et al, 2007; Nery et al, 2012); however, the proportion can change if protein is used as substrate in an in vitro model (Urrego et al, 2017). Isobutyrate and isovalerate are produced from valine and leucine, respectively (Blachier et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Organic matter disappearance and production of short- and branched-chain fatty acids from selected fiber sources used in pet foods by a canine in vitro fermentation model1

Donadelli

Titgemeyer

Aldrich³

2019

Journal of Animal Science

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Dietary fibers can influence a dog’s overall health, but high concentrations of soluble dietary fibers can cause soft stools. An in vitro model could be useful to predict the rate fibers are fermented once they reach the colon. Pet food companies are constantly searching for new ingredients to differentiate their products from competitors. Miscanthus grass (MG), pea fiber (PF), and sorghum bran (SB) are novel fiber sources that could be alternatives to standards like cellulose (CE) and beet pulp (BP). The objectives of the study were to determine the effects of fiber source on organic matter disappearance (OMD), estimated organic matter disappearance (EOMD), and fermentation end-product concentrations using an in vitro fermentation procedure and dog fecal inoculum. Total dietary fiber (TDF) residues from MG, CE, BP, PF, and SB were fermented in vitro with buffered dog feces. Fecal samples were collected and maintained in anaerobic conditions until the dilution and inoculation. Test tubes containing the fibrous substrates were incubated for 4, 8, and 12 h at 39 °C. Short-chain fatty acids (SCFA), branched-chain fatty acids (BCFA), OMD, and EOMD were determined for each fiber source and time point. Beet pulp had the highest OMD, EOMD, and SCFA production of all tested fiber sources (38.6% OMD, 26.2% EOMD, 2.72 mmol SCFA/g of substrate). Sorghum bran led to greater concentrations of BCFA (59.86 µmol/g of substrate) and intermediate OMD and EOMD compared to the other tested fibers. Cellulose and MG were poorly fermented with the lowest OMD, EOMD, SCFA, and BCFA compared to other fibers. In conclusion, MG could be used as an insoluble minimally fermentable replacement fiber for CE in dog foods.

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“…For the sialic acid determination, faeces were lyophilized (Alpha 1-4 LO plus, Christ, Osterodeam Hans, Germany) and analysed according to the method described by Jourdian et al [35]. Biogenic amines were analysed according to the method described by Urrego et al [36] in fresh faeces, collected up to 15 min after defecation.…”

Section: Methodsmentioning

confidence: 99%

Bacillus subtilis and Bacillus licheniformis reduce faecal protein catabolites concentration and odour in dogs

et al. 2020

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Background: Direct-fed microbials (DFM), such as Bacillus subtilis and Bacillus licheniformis, may improve gut functionality of the host by favouring non-pathogenic bacteria and reducing the formation of putrefactive compounds. The aim of this study was to assess the nutrient digestibility, faecal characteristics and intestinalfermentation products in dogs fed diets with Bacillus subtilis and Bacillus licheniformis. Sixteen dogs were randomly divided into two groups. Every eight dogs were fed with the control diet or the diet with the addition of 62.5 g of DFM (B. subtilis and B. licheniformis)/ton. Diets were provided throughout a 20-day adaptation period, followed by 5 days of total faecal collection. Nutrient digestibility and the metabolisable energy of the diets, plus the dogs' faecal characteristics and intestinal fermentation products were assessed. Results: There were no differences in nutrient digestibility (P > 0.05). However, DFM supplementation improved faecal score and resulted in less fetid faeces (P < 0.001). DFM inclusion reduced (P < 0.05) the biogenic amines concentration: putrescine, spermidine and cadaverine, besides the concentration of phenols and quinoline. Conclusions: The use of B. subtillis and B. licheniformis as DFM reduce the concentration of nitrogen fermentation products in faeces and faecal odour, but the digestibility of nutrients is not altered in dogs.

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Effects of different protein sources on fermentation metabolites and nutrient digestibility of brachycephalic dogs

Cited by 10 publications

References 16 publications

Nitrogen output in the urban environment using a vegetarian canine diet

Nitrogen output in the urban environment using a vegetarian canine diet

Organic matter disappearance and production of short- and branched-chain fatty acids from selected fiber sources used in pet foods by a canine in vitro fermentation model1

Bacillus subtilis and Bacillus licheniformis reduce faecal protein catabolites concentration and odour in dogs

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