IDEAS home Printed from https://ideas.repec.org/a/caa/jnlcjs/v52y2007i11id2320-cjas.html
   My bibliography  Save this article

Nitrogen degradability and intestinal digestibility of rumen undegraded protein in rapeseed, rapeseed meal and extracted rapeseed meal

Author

Listed:
  • P. Homolka

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • J. Harazim

    (Central Institute for Supervising and Testing in Agriculture, Opava, Czech Republic)

  • J. Třináctý

    (Research Institute for Animal Breeding, Ltd., Pohořelice, Czech Republic)

Abstract

In this study, nutritive values of rapeseed (R), rapeseed meal-expeller A (RM-A), rapeseed meal-expeller B (RM-B) and extracted rapeseed meal (ERM) were compared. The trials were performed using the in sacco method with three steers of the Czech Fleckvieh breed, which were fitted with a permanent ruminal cannula. Nylon bags with samples were incubated in the rumen for 2, 4, 8, 16, 24 and 48 hours. The effective degradability (ED) of crude protein (CP) was calculated at 0.08, 0.06 and 0.04 1/h of rumen particulate outflow rates (k), and the obtained ED values were 65.4, 70.8 and 77.4% for R, 86.7, 88.1 and 89.7% for RM-A, 82.2, 84.4 and 87.0% for RM-B and 56.3, 62.1 and 69.6% for ERM, respectively. The ED values significantly differed between feeds (P < 0.05) for all rumen particulate outflow rates. Disappearances of amino acids (AA) after 16 hours of incubation in the rumen of R, RM-A, RM-B and ERM were determined. In all cases, the concentrations of AA in the feeds determined after incubation in rumen were lower than in the original feeds. A mobile bag technique was used to determine intestinal digestibility. In the experiment, three dry cows fitted with permanent large ruminal cannula and the T-piece cannula in the proximal duodenum were used. The intestinal digestibilities of rumen undegraded CP (DSI) were estimated 30.0% in R, 15.4% in RM-A, 27.6% in RM-B and 65.3% in ERM. The DSI values significantly differ between the feeds (P < 0.05), except for the difference between R and RM-B.

Suggested Citation

  • P. Homolka & J. Harazim & J. Třináctý, 2007. "Nitrogen degradability and intestinal digestibility of rumen undegraded protein in rapeseed, rapeseed meal and extracted rapeseed meal," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(11), pages 378-386.
    • Handle: RePEc:caa:jnlcjs:v:52:y:2007:i:11:id:2320-cjas
    DOI: 10.17221/2320-CJAS
    as

    Download full text from publisher

    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/2320-CJAS.html
    Download Restriction: free of charge
    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/2320-CJAS.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/2320-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.

    References listed on IDEAS

    as
    1. D. Strusińska & D. Minakowski & B. Pysera & J. Kaliniewicz, 2006. "Effects of fat-protein supplementation of diets for cows in early lactation on milk yield and composition," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 51(5), pages 196-204.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. P. Homolka & V. Koukolová & Z. Němec & Z. Mudřík & B. Hučko & J. Sales, 2008. "Amino acid contents and intestinal digestibility of lucerne in ruminants as influenced by growth stage," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(12), pages 499-505.
    2. F. Jančík & V. Koukolová & P. Homolka, 2010. "Ruminal degradability of dry matter and neutral detergent fibre of grasses," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(9), pages 359-371.
    3. F. Jančík & V. Koukolová & P. Kubelková & B. Čermák, 2009. "Effects of grass species on ruminal degradability of silages and prediction of dry matter effective degradability," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(7), pages 315-323.
    4. A. Veselý & L. Křížová & J. Třináctý & S. Hadrová & M. Navrátilová & I. Herzig & M. Fišera, 2009. "Changes in fatty acid profile and iodine content in milk as influenced by the inclusion of extruded rapeseed cake in the diet of dairy cows," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(5), pages 201-209.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. P. Hering & O. Hanuš & J. Frelich & J. Pytloun & A. Macek & L. Janů & J. Kopecký, 2008. "Relationships between the results of various methods of urea analysis in native and enriched milk," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(2), pages 64-76.
    2. J. Frelich & M. Šlachta & O. Hanuš & J. Špička & E. Samková, 2009. "Fatty acid composition of cow milk fat produced on low-input mountain farms," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(12), pages 532-539.
    3. O. Hanuš & J. Vegricht & J. Frelich & A. Macek & M. Bjelka & F. Louda & L. Janů, 2008. "Analysis of raw cow milk quality according to free fatty acid contents in the Czech Republic," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(1), pages 17-30.
    4. O. Hanuš & P. Hering & J. Frelich & M. Jílek & V. Genčurová & R. Jedelská, 2008. "Reliability of results of milk urea analysis by various methods using artificial milk control samples," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(4), pages 152-161.

    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:11:id:2320-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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.