title: Chemical composition, in vitro fermentation characteristics, and in vivo digestibility responses by dogs to select corn fibers.
abstract: The objective was to examine the chemical composition, in vitro fermentation characteristics, and in vivo digestibility responses of fiber-rich corn coproducts resulting from corn wet milling. Native corn fibers, native corn fibers with fines, hydrolyzed corn fibers, and hydrolyzed extracted corn fibers were analyzed chemically and their capacity to produce short-chain fatty acids determined. Ash content was low (<1.2%), crude protein content varied little, but fat and fiber concentrations varied widely. Most fiber was in the insoluble form, with glucose being predominant followed by xylose. Total short-chain fatty acid production ranged from 211.6 to 699.52 micromol/g of dry matter, whereas branched-chain fatty acid production was low. Four corn fibers (native and processed) were included in a canine diet matrix at the 7% inclusion level. Nutrient digestibility, food intake, and fecal characteristics were not affected by corn fiber inclusion in canine diets, suggesting that they should be considered as potential dietary fiber sources in dog foods.
authors.affiliation: Department of Animal Sciences, University of Illinois, 132 Animal Sciences Laboratory, 1207 West Gregory Drive, Urbana, Illinois 61801, USA.
authors.forename: Marcial A
authors.initials: MA
authors.lastname: Guevara
authors.forename: Laura L
authors.initials: LL
authors.lastname: Bauer
authors.forename: Charles A
authors.initials: CA
authors.lastname: Abbas
authors.forename: Kyle E
authors.initials: KE
authors.lastname: Beery
authors.forename: David P
authors.initials: DP
authors.lastname: Holzgraefe
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Cecava
authors.forename: George C
authors.initials: GC
authors.lastname: Fahey
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004041:Dietary Fats / Q000032:analysis / Q000378:metabolism; D004043:Dietary Fiber / Q000032:analysis / Q000378:metabolism*; D004063:Digestion; D004285:Dogs / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000096:biosynthesis; D005243:Feces / Q000737:chemistry; D005285:Fermentation; D011897:Random Allocation; D012995:Solubility; D003313:Zea mays / Q000378:metabolism*
chemical_list: D004041:Dietary Fats; D004043:Dietary Fiber; D005232:Fatty Acids, Volatile