rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: fragmentation and flow of forage residues through the gastrointestinal tract of cattle
  name:
    name part: Pond, Kevin Roy.
    role:
      role term: creator
  name:
    name part: Ellis, W. C.
    role:
      role term: degree supervisor.
  name:
    name part: James, W. D.
    role:
      role term: degree committee member.
  name:
    name part: Kothmann, M. M.
    role:
      role term: degree committee member.
  name:
    name part: Schelling, G. T.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1982
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: x, 141 leaves : illustrations ; 29 cm
  abstract: The structural fragmentation of Coastal bermudagrass (Cynodon dactylon) and ryegrass (Lolium multiflorium) resulting from ingestive mastication and remastication subsequent to rumination was observed microscopically and histochemically. Sites of fragmentation and origin of plant tissue which comprised the various sized fragments ingested and present in the rumen were determined. The fragmentation of plant tissues appears primarily the result of mastication. Several one and two compartment models with and without age dependency were derived and fitted to marker excretion data after a single marker dose. The mathematical derivation, experimental application and computations of flow, fill and digesta output were discussed. Age dependent models fitted the data with lower model residual sum of squares and fitted data that previously were not successfully fitted to age independent models. A method was developed to simultaneously measure the concentration of ten elements suitable as nutritional markers. These markers were then used to label different fiber sources dosed to the same animals in order to obtain passage parameter estimates for each fiber source. The fiber was soaked in the marker solutions overnight followed by thorough rinsing. This soak and rinse procedure reduces the incidence of nonuniform labeling or exceeding the binding capacity of the fiber. These have been typical problems associated with labeling accomplished by spraying or sprinkling. Similar passage parameter estimates were obtained for rare earth elements as compared to Cr-mordanted fiber. This indicates that the rare earth elements may be used as particulate flow markers. Differences in passage parameter estimates were observed when dosing occurred at the beginning as compared to the end of a meal. These observations were discussed in relation to the reticulo-ruminal motility and movement of digesta. When dosing of different markers occurred at the beginning of meals at 24 h intervals, parameter …
  note: "Major subject: Nutrition."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. in Philosophy Texas A & M University 1982
  note: Includes bibliographical references (leaves 134-140).
  subject:
    topic: Bermuda grass
    topic: Microbiology
  subject:
    topic: Cattle
    topic: Feed utilization efficiency
  subject:
    topic: Gastrointestinal system
    topic: Motility
    topic: Mathematical models
  subject:
    topic: Italian ryegrass
  subject:
    topic: Nutrition
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-361358
  identifier: http://gateway.proquest.com/openurl
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-361358
  related item:
    location:
      url: http://gateway.proquest.com/openurl
  record info:
    record content source: TXA
    record creation date: 830907
    record change date: 20220103135427.0
    record identifier: in00000351498
    language of cataloging:
      language term: eng