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: Effects of Prenatal Transportation on Postnatal Endocrine and Immune Function in Brahman Beef Calves
  name:
    name part: Price, Deborah Michelle
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Welsh, Thomas Howard
    name part: 1952-
    role:
      role term: thesis advisor.
  name:
    name part: Randel, R. D.
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2013
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Prenatal stressors have been reported to affect postnatal cognitive, metabolic, reproductive and immune functions. This study examined immune indices and function in Brahman calves prenatally stressed by transportation of their dams on d 60, 80, 100, 120 and 140 ± 5 d of gestation. Based on assessment of cow's temperament and their reactions to repeated transportation it was evident that temperamental cows displayed greater pre-transport cortisol (P < 0.0001) and glucose (P < 0.03) concentrations, and habituated slower to the stressor compared to cows of calm and intermediate temperament. Serum concentration of cortisol at birth was greater (P < 0.03) in prenatally stressed versus control calves. Total and differential white blood cell counts and serum cortisol concentration in calves from birth through the age of weaning were determined. We identified a sexual dimorphism in neutrophil cell counts at birth (P = 0.0506) and cortisol concentration (P < 0.02) beginning at 14 d of age, with females having greater amounts of both. Whether weaning stress differentially affected cell counts, cortisol concentrations and neutrophil function of prenatally stressed and control male calves was examined. At 2 d post weaning, all calves had increased cortisol concentration (P < 0.0001) and neutrophil cell counts (P < 0.0001). However, in vitro production of reactive oxidative species by neutrophils was decreased (P = 0.0002) 2 d post weaning. Moreover, prenatally stressed calves demonstrated a larger (P = 0.0203) decrease in their immune function relative to control calves at 2 d post-weaning. Importantly, prenatally stressed calves took longer than controls to recover from the weaning stress. Additional studies are needed to clarify if prenatally stressed calves are more susceptible than control calves to pathogens during the post weaning period. Management practices to improve animal welfare and livestock production may need modification if follow-up studies demonstrate that pr…
  note: by Deborah Price.
  note: "Major Subject: Physiology of Reproduction."
  note: Includes vita.
  note: Master of Science Texas A & M University 2013 http://hdl.handle.net/1969.1/151318
  note: Includes bibliographical references.
  note: Text (Thesis)
  subject:
    topic: Major Physiology of Reproduction
  subject:
    topic: prenatal stress
  subject:
    topic: neutrophils
  subject:
    topic: ROS
  subject:
    topic: transport
  subject:
    topic: immune cells
  subject:
    topic: calves
  identifier: http://hdl.handle.net/1969.1/151318
  record info:
    record content source: TXA
    record creation date: 140305
    record change date: 20151206092325.0
    record identifier: in00003476123
    language of cataloging:
      language term: eng