IDEAS home Printed from https://ideas.repec.org/a/caa/jnlcjs/v52y2007i12id2331-cjas.html
   My bibliography  Save this article

Feed input and excreta collection time in metabolisable energy assays for ducks

Author

Listed:
  • C.L. Zhang

    (State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
    College of Life Science, Xuzhou Normal University, Xuzhou, China)

  • S.S. Hou

    (State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China)

  • Y.H. Wang

    (College of Life Science, Xuzhou Normal University, Xuzhou, China)

  • F.Z. Liu

    (College of Animal Science and Technology, Northwest A and F University, Yangling, China)

  • M. Xie

    (State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China)

Abstract

Three experiments were conducted to determine the optimal feed input and excreta collection time by a bioassay of dietary true metabolisable energy (TME) for ducks. In experiment 1 and experiment 2, the time for the unabsorbed feed passage through the alimentary canal was determined by measuring the DM and energy of excreta and feed residues in the alimentary canal at different periods. In experiment 3, the feed input of force-feeding was studied and a total of 70 mature Pekin drakes were allotted to 7 groups, each group containing 10 birds. After fasting for 36 h, one group served as a negative control to measure metabolic faecal energy plus endogenous urinary energy and the drakes of the other 6 groups were force-fed pelleted feed 30 g, 50 g, 70 g, 90 g, 110 g, and 150 g per bird, respectively. Energy excretion of the periods of 16-28 h after force-feeding was significantly higher than that of the periods after 32 h, and the total energy excretion of the periods after 32 h (P < 0.05). When the feed input increased from 30 g to 70 g, the value of TME was constant (P > 0.05). Metabolisable energy decreased significantly with an increase in feed input when the feed input was higher than 70 g (P < 0.05). It was concluded that the optimal time of feed withdrawal before tube-feeding and during excreta collection would be 32-36 h. The optimal feed input was 50 g to 70 g per drake.

Suggested Citation

  • C.L. Zhang & S.S. Hou & Y.H. Wang & F.Z. Liu & M. Xie, 2007. "Feed input and excreta collection time in metabolisable energy assays for ducks," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(12), pages 463-468.
    • Handle: RePEc:caa:jnlcjs:v:52:y:2007:i:12:id:2331-cjas
    DOI: 10.17221/2331-CJAS
    as

    Download full text from publisher

    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/2331-CJAS.html
    Download Restriction: free of charge
    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/2331-CJAS.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/2331-CJAS?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:caa:jnlcjs:v:52:y:2007:i:12:id:2331-cjas. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Ivo Andrle (email available below). General contact details of provider: https://www.cazv.cz/en/home/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.