title: Effect of creep feeding on selected microflora and short-chain fatty acids in the ileum of weanling pigs.
abstract: Pigs cannulated at the ileum were used to investigate the effect of creep feeding on specific intestinal microflora and VFA and lactate concentrations. In two replicate trials performed 50 d apart, a total of 24 15-d-old nursing pigs from seven sows were cannulated in the terminal ileum and randomly assigned to two test groups. One group was allowed access to a creep diet, whereas the other group was denied access to the diet by removal from the farrowing crate. Ileal samples were collected at 19, 22, 26, and 29 d of age (preweaning) and at 33, 36, and 40 d of age (postweaning). Samples were assayed for total and hemolytic E. coli, total lactobacilli, pH, acetate, propionate, butyrate, isobutyrate, valerate, isovalerate, D(-), and L(+) lactate. Creep feeding did not affect lactobacilli or E. coli concentrations (P > .05), nor did it affect short-chain fatty acid concentrations (P > .05). Most volatile fatty acid concentrations decreased (P < .05), total lactate increased (P < .05), and the proportion of E. coli that were hemolytic increased (P < .05) following weaning. Consumption of creep feed did not affect specific microbial populations or fermentative byproducts in the ileum of the young pig.
authors.affiliation: Department of Animal Science, University of Tennessee, Knoxville 37901-1071.
authors.forename: A G
authors.initials: AG
authors.lastname: Mathew
authors.forename: T
authors.initials: T
authors.lastname: Jones
authors.forename: M A
authors.initials: MA
authors.lastname: Franklin
mesh_terms: D000821:Animal Feed / Q000032:analysis / Q000592:standards*; D000818:Animals; D003433:Crosses, Genetic; D004926:Escherichia coli / Q000302:isolation & purification / Q000502:physiology; D005232:Fatty Acids, Volatile / Q000032:analysis / Q000378:metabolism*; D005260:Female; D006863:Hydrogen-Ion Concentration; D007082:Ileum / Q000737:chemistry / Q000378:metabolism* / Q000382:microbiology*; D007773:Lactates / Q000032:analysis / Q000378:metabolism; D007777:Lactobacillaceae / Q000302:isolation & purification / Q000502:physiology; D008297:Male; D011897:Random Allocation; D013025:Glycine max / Q000592:standards; D013552:Swine / Q000378:metabolism*; D014886:Weaning; D003313:Zea mays / Q000592:standards
chemical_list: D005232:Fatty Acids, Volatile; D007773:Lactates