University of SaskatchewanHARVEST
  • Login
  • Submit Your Work
  • About
    • About HARVEST
    • Guidelines
    • Browse
      • All of HARVEST
      • Communities & Collections
      • By Issue Date
      • Authors
      • Titles
      • Subjects
      • This Collection
      • By Issue Date
      • Authors
      • Titles
      • Subjects
    • My Account
      • Login
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      View Item 
      • HARVEST
      • Electronic Theses and Dissertations
      • Graduate Theses and Dissertations
      • View Item
      • HARVEST
      • Electronic Theses and Dissertations
      • Graduate Theses and Dissertations
      • View Item

      FEEDING PEA TO MODULATE POST-PRANDIAL METABOLIC RESPONSE: IMPACT ON WELFARE, HEALTH AND PERFORMANCE OF FEED RESTRICTED BROILER BREEDERS

      Thumbnail
      View/Open
      DEEP-DISSERTATION-2018.pdf (964.6Kb)
      Date
      2018-07-04
      Author
      Deep, Aman
      Type
      Thesis
      Degree Level
      Doctoral
      Metadata
      Show full item record
      Abstract
      An experiment was conducted for 244 d to investigate the impact of feeding a pea or wheat based diet on post-prandial metabolic status, production, health and welfare of feed restricted broiler breeders. A wheat- or pea-based diet was fed on an every-other-day basis from 3-15 wk of age and every-day basis thereafter (15-21 wk). At 21 wk of age, broiler breeder pullets were fed either a pea- or wheat-based diet once (OAD; 08:00) or twice (TAD; 08:00, 15:00) a day until the end of experimental period. At 84 d of age, uniformity was improved by feeding a pea-based diet. Broiler breeders fed a pea-based diet resulted in a reduced post-prandial glucose peak and relative liver weight and fat content over the period between meals. A treatment by time interaction showed that less fat was stored in the liver over the period of 48 h as a result of feeding a pea-based diet. Over the 48 h period between feeding, the expression of acetyl CoA carboxylase and VLDL-apolipoprotein was reduced for birds fed pea. Interaction effects of dietary treatment and time demonstrated a reduced degree of change (over the period of 48 h) in the expression of malic enzyme genes in pullets fed a pea-based diet. Birds fed a wheat-based diet demonstrated increased drinking over the 48 h period. Interactions between diet and day showed that pullets fed a pea-based diet expressed increased comfort and resting behavior, and reduced foraging and walking behavior during the off-feed day (24-48 h). Feeding a pea-based diet resulted in reduced levels of serum non-esterified fatty acids and β-hydroxybutyrate starting at 26 to 28 h post-feeding. During the laying phase, feeding the wheat-based diet on TAD basis improved hen-day egg production as compared to the OAD feeding program, but feeding frequency did not affect production of hens fed the pea-based diet. Hens fed the pea-based diet once-a-day had a lower average egg weight than other diet by feeding frequency subclasses. Feeding a pea-based diet reduced total embryonic mortality. In conclusion, feeding a pea-based diet resulted in improved performance and welfare of feed restricted broiler breeders.
      Degree
      Doctor of Philosophy (Ph.D.)
      Department
      Animal and Poultry Science
      Program
      Animal Science
      Supervisor
      Classen, Hank
      Committee
      Van Kessel, Andrew; Beaulieu, Denise; Zello, Gordon
      Copyright Date
      June 2018
      URI
      http://hdl.handle.net/10388/8644
      Subject
      slowly digested starch, lipid metabolism, behaviour, body weight uniformity, hatchability, satiety
      Collections
      • Graduate Theses and Dissertations
      University of Saskatchewan

      University Library

      © University of Saskatchewan
      Contact Us | Disclaimer | Privacy