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Factors affecting the functional length of productive life in Slovak Pinzgau cows

Author

Listed:
  • G. Mészáros

    (Slovak University of Agriculture, Nitra, Slovak Republic)

  • J. Wolf

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

  • O. Kadlečík

    (Slovak University of Agriculture, Nitra, Slovak Republic)

Abstract

A proportional hazard model was used to analyze the impact of the most important factors on the length of productive life in 44 796 Slovak Pinzgau cows. The calculations were carried out with Survival Kit 3.12. The milk production level within a herd was the most important factor. The relation between the milk production level and the culling risk was strongly non-linear. Cows with extremely low milk production (less than 1.5 standard deviations below average) had a 4.8 times higher culling risk than average cows. The culling risk for the highest yielding cows was about one half of the risk of average cows. In the first lactation the culling risk was highest at the beginning and decreased in the course of lactation whereas in subsequent lactations the culling risk was highest at the end of lactation. The risk decreased with parity. The effect of age at first calving did not have a large influence on the length of productive life, although a linear increase in culling risk was observed as the age at first calving increased. Cows from expanding herds were at lower risk to be culled compared to cows in herds of stable and decreasing size.

Suggested Citation

  • G. Mészáros & J. Wolf & O. Kadlečík, 2008. "Factors affecting the functional length of productive life in Slovak Pinzgau cows," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(3), pages 91-97.
    • Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:3:id:2712-cjas
    DOI: 10.17221/2712-CJAS
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    References listed on IDEAS

    as
    1. R. Kasarda & O. Kadlečík, 2007. "An economic impact of inbreeding in the purebred population of Pinzgau cattle in Slovakia on milk production traits," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(1), pages 7-11.
    2. O. Kadlečík & R. Kasarda & L. Hetényi, 2004. "Genetic gain, increase in inbreeding rate and generation interval in alternatives of Pinzgau breeding program," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 49(12), pages 524-531.
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    Cited by:

    1. E. Strapáková & P. Strapák & J. Candrák, 2014. "Estimation of breeding values for functional productive life in the Slovak Holstein population," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 59(2), pages 54-60.
    2. L. Zavadilová & M. Štípková & E. Němcová & J. Bouška & J. Matějíčková, 2009. "Analysis of the phenotypic relationships between type traits and functional survival in Czech Fleckvieh cows," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(12), pages 521-531.
    3. J. Čítek & V. Řehout & J. Hájková, 2009. "Congenital disorders in the cattle population of the Czech Republic," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(2), pages 55-64.
    4. L. Zavadilová & M. Štípková, 2013. "Effect of age at first calving on longevity and fertility traits for Holstein cattle," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 58(2), pages 47-57.

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