Genetic relationship between lactation persistency and conformation traits in Polish Holstein-Friesian cow population A., Ptak E., Jagusiak W. (2016): Genetic relationship between lactation persistency and conformation traits in Polish Holstein-Friesian cow population. Czech J. Anim. Sci., 61: 75-81.
download PDF
The objective of this study was to find genetic relationships between lactation persistency and conformation traits of Polish Holstein-Friesian cows. The data were derived from SYMLEK – the Polish National Database. The analysis used 22 conformation traits and 3 persistency measures of 18 216 first lactation cows. Persistency was defined as milk yield in the second 100 days in milk (DIM) divided by the yield in the first 100 DIM, milk yield in the third 100 DIM divided by the yield in the first 100 DIM, and milk yield at 280 DIM divided by milk yield at 60 DIM. The lactation curve was modelled with fourth-order Legendre polynomials using a multiple-trait prediction method. The multiple-trait REML method was applied for (co)variance component estimation. The linear model for persistency included fixed effects of herd-year-season of calving, age of calving class, and random animal effect; the linear model for type traits included fixed effects of herd-year-season of calving-classifier, age of calving class, lactation stage, and random animal effect. Stature and composite type traits (except type and conformation) were moderately or strongly genetically correlated with each of the three persistency measures. Genetic correlations of lactation persistency with overall feet and leg score and overall udder score were height and positive, whereas the correlations with stature and size were height but negative. All linearly scored traits had little genetic relationship with persistency measures except for rear udder height, udder width, and foot angle. In these three cases the genetic correlations with persistency measures were relatively high, positive, and preferable. The obtained genetic correlations suggest that increased weights of composite traits like size, overall feet and leg score, and overall udder score in the selection index, as well as selection for better rear udder height and foot angle, might cause a favourable correlated response in persistency.
Bar-Anan R., Ron M. (1983): Genetic Correlations Among Progeny Groups for Type Traits, Milk Yield, Yield Persistency, and Culling Rates. Journal of Dairy Science, 66, 2438-2440
Berry D.P., Buckley F., Dillon P., Evans R.D., Veerkamp R.F. (2004): Genetic relationships among linear type traits, milk yield, body weight, fertility and somatic cell count in primiparous dairy cows. Irish Journal of Agricultural and Food Research, 43, 161–176.
DeGroot B.J., Keown J.F., Van Vleck L.D., Marotz E.L. (2002): Genetic Parameters and Responses of Linear Type, Yield Traits, and Somatic Cell Scores to Divergent Selection for Predicted Transmitting Ability for Type in Holsteins. Journal of Dairy Science, 85, 1578-1585
de Haas Y., Janss L.L.G., Kadarmideen H.N. (2007): Genetic and phenotypic parameters for conformation and yield traits in three Swiss dairy cattle breeds. Journal of Animal Breeding and Genetics, 124, 12-19
Gengler N. (1996): Persistency of lactation yields: a review. Interbull Bulletin, 12, 87–96.
Gengler N., Keown J.F., Van Vleck L.D. (1995): Various persistency measures and relationships with total, partial and peak milk yields. Brazilian Journal of Genetics, 18, 237–243.
Jamrozik J., Jansen G., Schaeffer L.R., Liu Z. (1998): Analysis of persistency of lactation calculated from a random regression test day model. Interbull Bulletin, 17, 64–69.
Kirkpatrick M., Lofsvold D., Bulmer M. (1990): Analysis of inheritance, selection and evolution of growth trajectories. Genetics, 124, 979–993.
Lassen J., Mark T. (2008): Short Communication: Genotype by Housing Interaction for Conformation and Workability Traits in Danish Holsteins. Journal of Dairy Science, 91, 4424-4428
Misztal I. (2008): Reliable computing in estimation of variance components. Journal of Animal Breeding and Genetics, 125, 363-370
Misztal I., Lawlor T.J., Short T.H., VanRaden P.M. (1992): Multiple-Trait Estimation of Variance Components of Yield and Type Traits Using an Animal Model. Journal of Dairy Science, 75, 544-551
Muir B.L., Fatehi J., Schaeffer L.R. (2004): Genetic Relationships Between Persistency and Reproductive Performance in First-Lactation Canadian Holsteins. Journal of Dairy Science, 87, 3029-3037
Nemcova E., Stipkova M., Zavadilova L. (2011): Genetic parameters for linear type traits in Czech Holstein cattle. Czech Journal of Animal Science, 56, 157–162.
Otwinowska-Mindur A., Ptak E. (2015): Genetic analysis of lactation persistency in the Polish Holstein-Friesian cows. Animal Science Paper and Reports, 33, 109–117.
Ptak E., Jagusiak W., Zarnecki A., Otwinowska-Mindur A. (2011): Heritabilities and genetic correlations of lactational and daily somatic cell score with conformation traits in Polish Holstein cattle. Czech Journal of Animal Science, 56, 205–212.
Schaeffer L.R., Jamrozik J. (1996): Multiple-Trait Prediction of Lactation Yields for Dairy Cows. Journal of Dairy Science, 79, 2044-2055
Sölkner J., Fuchs W. (1987): A comparison of different measures of persistency with special respect to variation of test-day milk yields. Livestock Production Science, 16, 305-319
Swalve H.H. (1994): Genetic relationships between test-day milk production and persistency in dairy cattle performance records. In: Proc. 5th World Congress on Genetics Applied to Livestock Production, Guelph, Canada, 18, 467–470.
Zavadilova L., Stipkova M. (2012): Genetic correlations between longevity and conformation traits in the Czech Holstein population. Czech Journal of Animal Science, 57, 125–136.
download PDF

© 2022 Czech Academy of Agricultural Sciences | Prohlášení o přístupnosti