• Login
    View Item 
    •   T-Stór
    • Animal & Grassland Research & Innovation Programme
    • Animal & Bioscience
    • View Item
    •   T-Stór
    • Animal & Grassland Research & Innovation Programme
    • Animal & Bioscience
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of T-StórCommunitiesPublication DateAuthorsTitlesSubjectsFunderThis CollectionPublication DateAuthorsTitlesSubjectsFunderProfilesView

    My Account

    LoginRegister

    Information

    Deposit AgreementLicense

    Statistics

    Display statistics

    A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Patton_Animal_final_revision_1 ...
    Size:
    295.1Kb
    Format:
    PDF
    Download
    Author
    Patton, Joe
    Murphy, J.J.
    O'Mara, Frank P.
    Butler, Stephen cc
    Keyword
    Dairy cows
    Energy balance
    Genetic selection
    Nutrient partitioning
    Date
    2008-06
    
    Metadata
    Show full item record
    Statistics
    Display Item Statistics
    URI
    http://hdl.handle.net/11019/304
    Citation
    J. Patton, J. J. Murphy, F. P. O’Mara and S. T. Butler (2008). A comparison of energy balance and metabolic profiles of theNew Zealand and North American strains of Holstein Friesian dairy cow. Animal, 2, pp 969-978.doi:10.1017/S1751731108001973
    Abstract
    The milk production, energy balance (EB), endocrine and metabolite profiles of 10 New Zealand Holstein Friesian (NZ) cows and 10 North American Holstein Friesian (NA) cows were compared. The NA cows had greater peak milk yields and total lactation milk yields (7387 v. 6208 kg; s.e.d.5359), lower milk fat and similar protein concentrations compared with the NZ cows. Body weight (BW) was greater for NA cows compared with NZ cows throughout lactation (596 v. 544 kg; s.e.d.515.5), while body condition score (BCS) tended to be lower. The NA strain tended to have greater dry matter intake (DMI) (17.2 v. 15.7 kg/day; s.e.d.50.78) for week 1 to 20 of lactation, though DMI as a proportion of metabolic BW was similar for both strains. No differences were observed between the strains in the timing and magnitude of the EB nadir, interval to neutral EB, or mean daily EB for week 1 to 20 of lactation. Plasma concentrations of glucose and insulin were greater for NA cows during the transition period (day 14 pre partum to day 28 post partum). Plasma IGF-I concentrations were similar for the strains at this time, but NZ cows had greater plasma IGF-I concentration from day 29 to day 100 of lactation, despite similar calculated EB. In conclusion, the results of this study do not support the premise that the NZ strain has a more favourable metabolic status during the transition period. The results, however, indicate that NZ cows begin to partition nutrients towards body reserves during mid-lactation, whereas NA cows continue to partition nutrients to milk production.
    Funder
    National Development Plan Ireland
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.1017/S1751731108001973
    Scopus Count
    Collections
    Animal & Bioscience

    entitlement

     
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.