| Fiber fermentability effects on energy and macronutrient digestibility, fecal parameters, postprandial metabolite responses, and colon histology of overweight cats. | |
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MedLine Citation:
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PMID: 22247109 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Considering the different potential benefits of divergent fiber ingredients, the effect of 3 fiber sources on the energy and macronutrient digestibility, fermentation product formation, postprandial metabolite responses, and colon histology of overweight cats fed kibble diets was compared. Twenty-four healthy adult cats were assigned in a complete randomized block design to 2 groups of 12 animals, and 3 animals from each group were fed 1 of 4 of the following kibble diets: control (CO; 11.5% dietary fiber), beet pulp (BP; 26% dietary fiber), wheat bran (WB; 24% dietary fiber), and sugarcane fiber (SF; 28% dietary fiber). Digestibility was measured by the total collection of feces. After 16 d of diet adaptation and an overnight fasting, blood glucose, cholesterol, and triglyceride postprandial responses were evaluated for 16 h after continued exposure to food. On d 20, colon biopsies of the cats were collected under general anesthesia. Fiber addition reduced food energy and nutrient digestibility. Out of all of the fiber sources, SF had the lowest dietary fiber digestibility (P < 0.05), causing the largest reduction of dietary energy digestibility (P < 0.05). The higher fermentability of BP resulted in reduced fecal DM and pH, greater fecal production [g/(cat•d); as-is], and greater fecal concentration of acetate, propionate, and lactate (P < 0.05). For most fecal variable, WB was intermediate between BP and SF, and SF was similar to the control diet except for an increased fecal DM and a firmer feces production for the SF diet (P < 0.05). Postprandial evaluations indicated reduced glucose mean concentration and area under the glucose curve in cats fed the SF diet (P < 0.05). Colon mucosa thickness, crypt area, lamina propria area, goblet cell area, crypt mean size, and crypt in bifurcation did not vary among the diets. According to the fiber solubility and fermentation rates, fiber sources can induce different physiological responses in cats, reduce energy digestibility, and favor glucose metabolism (sugarcane fiber), or improve gut health (beet pulp). |
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Authors:
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M M Fischer; A M Kessler; L R M de Sá; R S Vasconcellos; F O Roberti Filho; S P Nogueira; M C C Oliveira; A C Carciofi |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-13 |
Journal Detail:
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Title: Journal of animal science Volume: - ISSN: 1525-3163 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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