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The relationship between somatic cell count, milk production and six linearly scored type traits in Holstein cows

Author

Listed:
  • E. Němcová

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

  • M. Štípková

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

  • L. Zavadilová

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

  • J. Bouška

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

  • M. Vacek

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

Abstract

Test-day records of somatic cell count (SCC), milk yield, fat and protein content and six linearly scored type traits (fore udder attachment, udder depth, central ligament, rear udder height, front teat placement, teat length) of 22 613 first lactation cows from 117 herds were included in this study. SCC was log-transformed into somatic cell score (SCS). Milk yield was standardized as follows: MILK = milk yield (fat content + protein content)/(3.8 + 3.2). For each analyzed type trait, cows were assigned to one of the three levels according to linear type score: level 1 (score 1 and 2); level 2 (score 5 and 6); level 3 (score 8 and 9). A linear model was used to estimate the effect of different type traits on MILK and SCS. The highest values of SCS were found for the first levels. The differences between the first and second level were on average 0.33, 0.54, 0.28, and 0.36 for fore udder attachment, udder depth, central ligament and rear udder height, respectively. The cows with deep udders, weak central ligaments and fore attachments and low rear udder height showed the highest SCS Low SCS appeared to be associated with an intermediate distance between the front teats and longer teats. The third level of udder depth (shallow udder) had low MILK. Rear udder height showed low MILK for the first level (low height) with the highest MILK values for the third level (high height). The average difference was 3.3 kg.

Suggested Citation

  • E. Němcová & M. Štípková & L. Zavadilová & J. Bouška & M. Vacek, 2007. "The relationship between somatic cell count, milk production and six linearly scored type traits in Holstein cows," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(12), pages 437-446.
    • Handle: RePEc:caa:jnlcjs:v:52:y:2007:i:12:id:2337-cjas
    DOI: 10.17221/2337-CJAS
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    References listed on IDEAS

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    1. E. Krupa & M. Wolfová & D. Peškovičová & J. Huba & Z. Krupová, 2005. "Economic values of traits for Slovakian Pied cattle under different marketing strategies," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(10), pages 483-492.
    2. P. Šafus & M. Štípková & L. Stádník & J. Přibyl & V. Čermák, 2005. "Sub-indexes for bulls ofHolsteinbreed in the Czech Republic," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(6), pages 254-265.
    3. J. Bouška & M. Vacek & M. Štípková & E. Němcová & P. Pytloun, 2006. "The relationship between conformations of dams and daughters in Czech Holsteins," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 51(6), pages 236-240.
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    Cited by:

    1. E. Ptak & W. Jagusiak & A. Żarnecki & A. Otwinowska-Mindur, 2011. "Heritabilities and genetic correlations of lactational and daily somatic cell score with conformation traits in Polish Holstein cattle," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 56(5), pages 205-212.
    2. K. Yazgan & J. Makulska & A. Węglarz & E. Ptak & M. Gierdziewicz, 2010. "Genetic relationship between milk dry matter and other milk traits in extended lactations of Polish Holstein cows," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(3), pages 91-104.

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