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| Author(s): |
João Paulo Fernandes Santos
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Pirassununga. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) |
| Defense date: | 2015-08-05 |
| Examining board members: |
Marcio Antonio Brunetto;
Áulus Cavaliéri Carciofi;
Janine França;
Márcia de Oliveira Sampaio Gomes;
Catarina Abdalla Gomide
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| Advisor: | Marcio Antonio Brunetto |
| Abstract | |
This study evaluated the effects of the inclusion of increasing levels of spray-dried yeast cell wall (YCW) in diets to healthy adult cats on the coefficient of apparent digestibility, microbiota composition and concentration of short and branched fatty acids, latic acid and biogenic amines fecal. Fourteen adult cats were used, males and females, with an average weight of 4.40±1.05kg and average age of 6.2±0.54 years old, distributed in a randomized unbalanced block design (experimental periods), with two blocks and three or four cats by diet each block into four treatments: control 0% (T0), 0.2% of YCW (T20), 0.4% of YCW (T40) and 0.6% of YCW (T60), totaling seven animals per treatment. The results were evaluated by SAS GLM function by simple polynomial regression. It was verified a linear increase in coefficient of total tract apparent digestibility (CTTAD) of mineral matter (p=0.0305) and a tendency to quadratic behavior for CTTDA of crude fiber (p=0.0792). Regarding the fecal microbiota, a linear response of increase in log/copies of Bifidobacterium spp. (p = 0.0152) and Lactobacillus spp. (p=0.0299), linear reduction of Clostridium perfringens (p=0.0371) and quadratic in E. coli, Hafnia alvei and Shigella spp. group (p=0.0211), however enterobacteria, latic acid bacteria, Campylobacter spp., Salmonella spp. and Chlamydia felis effect was not observed (p>0.05). For fermentation products was observed linear increase in concentration of butyric acid (p=0.0075), acetic acid (p=0.0854), valeric (p=0.0465), total short chain fatty acids (p=0.0612) and branched (p=0.0986), putrescine (p=0.0276), cadaverine (p=0.0036), histamine (p=0.0183) and total biogenic amines (p=0.0024) with the inclusion of YCW however isobutyric acid (p=0.0801) showed a quadratic increase. Through this study was possible to address the prebiotic effect of YCW to adult healthy cats. (AU) | |
| FAPESP's process: | 12/12730-0 - Effects of increasing levels of yeast cell wall on digetibility, fecal microbiota and gut fermentation products in diets for adutl cats. |
| Grantee: | João Paulo Fernandes Santos |
| Support Opportunities: | Scholarships in Brazil - Doctorate |