IDEAS home Printed from https://ideas.repec.org/a/caa/jnlvet/v60y2015i11id8531-vetmed.html
   My bibliography  Save this article

Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens

Author

Listed:
  • J.H. Park

    (Department of Animal Resource and Science, Dankook University, Cheonan, Republic of Korea)

  • I.H. Kim

    (Department of Animal Resource and Science, Dankook University, Cheonan, Republic of Korea)

Abstract

Hy-line brown commercial layers (32 weeks old) were used to investigate the effects of GABA (gamma-aminobutyric acid) derived from E. coli strains on productivity, egg quality, and blood profile. In total, 288 birds (1946 ± 0.5 g) were fed four different levels of GABA (0, 25, 50, and 100 ppm), in a basal diet based on corn-soybean meal, for five weeks. Egg production, egg weight, and egg mass during weeks 32 to 36 showed significant improvement, as dietary GABA was increased from 0 to 100 ppm (linear, P < 0.05). Additionally, GABA supplementation was associated with increased eggshell breaking strength and albumen height (quadratic and linear, P < 0.05). Blood variables, such as white blood cells, red blood cells, lymphocyte, cortisol, epinephrine, and norepinephrine concentrations, were not influenced by addition of GABA to the diet; however, the haptoglobin concentration decreased significantly (linearly) and the IgG concentration increased (quadratically) in the GABA-fed groups (P < 0.05). These results suggest that diets containing GABA may beneficially affect productivity, egg quality, serum haptoglobin, and IgG concentrations in layers.

Suggested Citation

  • J.H. Park & I.H. Kim, 2015. "Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 60(11), pages 629-634.
    • Handle: RePEc:caa:jnlvet:v:60:y:2015:i:11:id:8531-vetmed
    DOI: 10.17221/8531-VETMED
    as

    Download full text from publisher

    File URL: http://vetmed.agriculturejournals.cz/doi/10.17221/8531-VETMED.html
    Download Restriction: free of charge
    File URL: http://vetmed.agriculturejournals.cz/doi/10.17221/8531-VETMED.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/8531-VETMED?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:jnlvet:v:60:y:2015:i:11:id:8531-vetmed. 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.