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Quarter milk flow patterns in dairy cows: factors involved and repeatability

Author

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  • V. Tancin

    (,2, A.H. I 2, D. P 1, P.H. H 2, J. M 3 1Research Institute of Animal Production, Nitra, Slovak Republic)

  • A.H. Ipema

    (,2, A.H. I 2, D. P 1, P.H. H 2, J. M 3 1Research Institute of Animal Production, Nitra, Slovak Republic)

  • D. Peskovicova

    (,2, A.H. I 2, D. P 1, P.H. H 2, J. M 3 1Research Institute of Animal Production, Nitra, Slovak Republic)

  • P.H. Hogeverf

    (,2, A.H. I 2, D. P 1, P.H. H 2, J. M 3 1Research Institute of Animal Production, Nitra, Slovak Republic)

  • J. Macuhova

    (,2, A.H. I 2, D. P 1, P.H. H 2, J. M 3 1Research Institute of Animal Production, Nitra, Slovak Republic)

Abstract

The objectives of our study were to describe the variation of quarter milk flow parameters and to determine the factors that affect these parameters the most. Additionally, repeatabilities (r2) of the quarter milk flow traits (duration of milk flow, time to reach peak flow, peak flow rate, and duration of milk flow in single phases - increase, plateau, decline and blind phase) were calculated. Repeatability of total milk yield and milk yield in single phases was calculated, too. The data from 39 Holstein cows, in their first to third lactation and free of clinical mastitis, were used for statistical analysis. A total of 1 656 curves of quarter milk flows were recorded during six consecutive days. At the last evening and morning milking samples of milk from each quarter were collected for determination of somatic cell count (SCC). Peak flow rate, quarter position, time of milking (morning and evening) and SCC significantly affected most of the measured traits. The highest r2 were for total milk yield and yield of plateau phase 0.53 and 0.50, resp. The lowest r2 were calculated for the duration of increase phase, and milk yield of the increase and blind phase 0.26, 0.12 and 0.21, resp. Peak flow rate, SCC, time of milking and front-rear position influenced the values of r2 of traits to various extent.

Suggested Citation

  • V. Tancin & A.H. Ipema & D. Peskovicova & P.H. Hogeverf & J. Macuhova, 2003. "Quarter milk flow patterns in dairy cows: factors involved and repeatability," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 48(10), pages 275-282.
    • Handle: RePEc:caa:jnlvet:v:48:y:2003:i:10:id:5780-vetmed
    DOI: 10.17221/5780-VETMED
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    References listed on IDEAS

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    1. V. Tančin & R.M. Bruckmaier, 2001. "Factors affecting milk ejection and removal during milking and suckling of dairy cows," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 46(4), pages 108-118.
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    Cited by:

    1. V. Tančin & M. Uhrinčať & L. Mačuhová & R.M. Bruckmaier, 2007. "Effect of pre-stimulation on milk flow pattern and distribution of milk constituents at a quarter level," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(5), pages 117-121.

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