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:
    title: Evaluation of various sulphur amino acid compounds in the diet of red drum, Sciaenops ocellatus
  name:
    name part: Goff, Jonathan B.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2003
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: ix, 42 leaves : illustrations ; 28 cm.
  abstract: Refinement of diet formulations to enhance the efficiency of red drum production continues to be pursued. Based on previous studies, the sulfur amino acid (SAA) requirement of red drum for methionine plus cystine appears to be most limiting, which may necessitate supplementation if plant proteins are used to replace animal feedstuffs in diet formulations. Therefore, this study was conducted to (1) determine the nutritional value of various sulfur compounds in diets for red drum, (2) determine the effects of the SAA supplements on ammonia excretion, and (3) re-evaluate the cystine sparing value for methionine. Two feeding trials were conducted with juvenile red drum with a semi-purified basal diet (0.54% SAA) supplemented on an equal-sulfur basis with either L-methionine (control), DL-methionine, or methionine hydroxy analog (MHA), N-acetyl-DL-methionine, or liquid MHA (Alimet[TM]) to meet the minimum SAA requirement of red drum (1.06% of diet). Diets containing various ratios of cystine to methionine (40:60, 45:55, and 50:50) also were fed in the second trial to re-evaluate the potential sparing effect of cystine on methionine. All diets were fed to apparent satiation twice daily to triplicate groups of fingerling red drum in 110-L aquaria connected as a brackish (7 ppt) water recirculating system for 8 and 7 weeks in trials 1 and 2. At the end of the second trial, total ammonia nitrogen (TAN) excretion was determined at 4 h postprandial. Fish fed the basal diet had significantly (p [<] 0.05) lower weight gain, feed efficiency and survival than fish fed SAA-supplemented diets in both trials. There were no differences in weight gain, feed efficiency, and protein efficiency ratio or protein conversion efficiency for fish fed diets containing the various SAA-supplemented diets. Results from this experiment indicate red drum were able to use DL-methionine, N-acetyl-DL-methionine, Alimet[TM] and MHA as effectively as L-methionine to meet their SAA requirement. MHA or Ali…
  note: by Jonathan B. Goff.
  note: "Major subject: Wildlife and Fisheries Sciences".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2003
  note: Includes bibliographical references (leaves 34-40).
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2003-THESIS-G643
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2003-THESIS-G643
  record info:
    record content source: TXA
    record creation date: 040706
    record change date: 20220103134251.0
    record identifier: in00001849478