Articles | Volume 59, issue 3
Original study
14 Jul 2016
Original study |  | 14 Jul 2016

Genetic relationship of lactation persistency with milk yield, somatic cell score, reproductive traits, and longevity in Slovak Holstein cattle

Eva Strapáková, Juraj Candrák, and Peter Strapák

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Cited articles

Ali, T. E. and Schaeffer, L. R.: Accounting for covariances among test day milk yields in dairy cows, Canadian J. Anim. Sci., 67, 637–644, 1987.
Appuhamy, R.: Phenotypic Relationships between Lactation persistency and Common Health Disorders in Dairy Cows, Diploma thesis, Blacksburg, VA, 94 pp., 2006.
Bo, N.: Practical cattle breeding in the future – commercialized or co-operative, across borderlines between countries and organizations, available at: (last access: 26 May 2015), 2009.
Boujenane, I. and Hilal, B.: Genetic and non genetic effects for lactation curve traits in Holstein-Friesian cows, Archiv Tierzucht, 55, 450–457, 2012.
Cobuci, J. A., Euclydes, R. F., Costa, C. N., De Almeida Torres, R., Lopes, P. S., and Pereira, C. S.: Genetic evaluation for persistency of lactation in Holstein cows using a random regression model, Genet. Mol. Biol., 30, 349–355, 2007.
Short summary
The advantages of increasing lactation persistency in dairy cattle are indisputable on the practical herd level. More persistent lactation brings a longer high-production period. In this study estimate the breeding values of lactation persistency, test day of milk yield, somatic cell score, reproductive traits (calving interval, days open), and longevity in Slovak Holstein dairy cattle were estimated and the relationship between persistency of lactation and other selected trait was analyzed.