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    Comparison of breed of dairy cow under grass-based spring milk production systems

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    Author
    Buckley, Frank
    Walsh, S.W.
    Dillon, Pat
    Keyword
    Cows
    Dairy
    Milk production systems
    Breed
    feeding systems
    genotype
    Date
    2006-01-01
    
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    URI
    http://hdl.handle.net/11019/995
    Citation
    Buckley, F., Walsh, S., Dillon, P., Comparison of breed of dairy cow under grass-based spring milk production systems, End of Project report, Teagasc, 2006.
    Abstract
    The objective of this study was to investigate the potential differences among different dairy cow breeds across two feeding systems on milk production, udder health, milking characteristics, body weight, body condition score, hormone parameters, ovarian function, survival and overall reproductive efficiency. The breeds investigated included Holstein-Friesian (HF), Montbéliarde (MB), Normande (NM), Norwegian Red (NRF) and Holstein- Friesian × Montbéliarde (MBX) and Holstein- Friesian × Normande (NMX). Selection within the HF breed has, until recently, been predominantly for milk production with little or no direct selection for functional traits other than those correlated with superior type. The MB and the NM have been simultaneously selected for both milk and beef production in the past. The NRF were imported as calves and come from a more balanced total merit index incorporating production and cow functionality since the early 1970s. The dairy cow breeds were grouped into blocks of two within breed groups and randomized across two spring-calving grass-based feeding systems: low concentrate feeding system (LC) and high concentrate feeding system (HC). Those on LC feeding system were offered approximately 530 kg/cow over the total lactation, while those on HC feeding system were offered approximately 1030 kg/cow.
    Funder
    National Development Plan (NDP)
    Collections
    AGRIP End of Project Reports
    Animal & Bioscience

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